CVE-2026-19553
CVE-2026-19553 · SSLContext.wrap_bio() missing validation of server_hostname parameter
This page contains facts from public vulnerability sources. Check the original advisory before updating.
This page shows selected source facts. See the linked advisories for the complete description and affected versions.
ssl.SSLContext.wrap_bio() didn't require the server_hostname argument to not be None if ssl.SSLContext.check_hostname was set. Due to a missing parameter check in SSLObject, if the server_hostname argument isn't supplied then hostname verification would be silently skipped. This defect could lead to programs where certificate hostname verification *appeared* to be succeeding with SSLContext.check_hostname = True and no ValueError being raised due to misconfiguration. If the program passes a server_hostname value that isn't an empty string or None to any of these APIs then certificate hostname verification proceeds as expected and the program is not affected by this vulnerability. Mitigating this vulnerability doesn't require updating Python or applying the patch. To mitigate, pass a valid non-None and non-empty server_hostname value to SSLContext.wrap_bio(), asyncio.create_connection(), or asyncio.loop.start_tls() and certificate hostname verification will proceed as expected. Upgrading to the latest version of Python or applying the patch only changes the behavior from silently skipping hostname verification to raising a ValueError, similar to SSLContext.wrap_socket(), when server_hostname isn't supplied.
CVSS 7.6 · High · EPSS 0.4% · Public exploit · Fix available
- Published
- Updated
Affected products and versions
python
- Versions
- ≥ 0, < 3.10.22: Affected (python)
- ≥ 3.11.0, < 3.11.17: Affected (python)
- ≥ 3.12.0, < 3.12.15: Affected (python)
- ≥ 3.13.0, < 3.13.16: Affected (python)
- ≥ 3.14.0, < 3.14.8: Affected (python)
- ≥ 3.15.0a1, < 3.15.0rc3: Affected (python)
Update to 3.10.22; Update to 3.11.17; Update to 3.12.15; Update to 3.13.16; Update to 3.14.8; Update to 3.15.0rc3
pypy3 Debian:12
- Versions
- 7.3.11+dfsg-2
- 7.3.11+dfsg-2+deb12u1
- 7.3.11+dfsg-2+deb12u2
- 7.3.11+dfsg-2+deb12u3
- 7.3.12+dfsg-1
- 7.3.12~rc1+dfsg-1
- 7.3.12~rc2+dfsg-1
- 7.3.13+dfsg-1
- 7.3.14+dfsg-1
- 7.3.15+dfsg-1
- 7.3.16+dfsg-1
- 7.3.16+dfsg-2
- 7.3.17+dfsg-1
- 7.3.17+dfsg-2
- 7.3.17+dfsg-3
- 7.3.18+dfsg-1
- 7.3.18+dfsg-2
- 7.3.19+dfsg-1
- 7.3.19+dfsg-2
- 7.3.20+dfsg-1
- 7.3.20+dfsg-2
- 7.3.20+dfsg-3
- 7.3.20+dfsg-4
- 7.3.21+dfsg-1
- 7.3.21+dfsg-2
- 7.3.21+dfsg-3
- 7.3.21+dfsg-4
- 7.3.22+dfsg-1
- 7.3.23+dfsg-1
- 7.3.23+dfsg-2
- 8.0.0+dfsg-1
- 8.0.1+dfsg-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
pypy3 Debian:13
- Versions
- 7.3.19+dfsg-2
- 7.3.20+dfsg-1
- 7.3.20+dfsg-2
- 7.3.20+dfsg-3
- 7.3.20+dfsg-4
- 7.3.21+dfsg-1
- 7.3.21+dfsg-2
- 7.3.21+dfsg-3
- 7.3.21+dfsg-4
- 7.3.22+dfsg-1
- 7.3.23+dfsg-1
- 7.3.23+dfsg-2
- 8.0.0+dfsg-1
- 8.0.1+dfsg-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
pypy3 Debian:14
- Versions
- 7.3.19+dfsg-2
- 7.3.20+dfsg-1
- 7.3.20+dfsg-2
- 7.3.20+dfsg-3
- 7.3.20+dfsg-4
- 7.3.21+dfsg-1
- 7.3.21+dfsg-2
- 7.3.21+dfsg-3
- 7.3.21+dfsg-4
- 7.3.22+dfsg-1
- 7.3.23+dfsg-1
- 7.3.23+dfsg-2
- 8.0.0+dfsg-1
- 8.0.1+dfsg-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python3.11 Debian:12
- Versions
- 3.11.2-6
- 3.11.2-6+deb12u1
- 3.11.2-6+deb12u2
- 3.11.2-6+deb12u3
- 3.11.2-6+deb12u4
- 3.11.2-6+deb12u5
- 3.11.2-6+deb12u6
- 3.11.2-6+deb12u7
- 3.11.2-6+deb12u8
- Affected ranges
- ECOSYSTEM: < 3.11.2-6+deb12u9
Update to 3.11.2-6+deb12u9
python3.13 Debian:13
- Versions
- 3.13.11-1
- 3.13.12-1
- 3.13.14-1
- 3.13.15-1
- 3.13.5-2
- 3.13.5-2+deb13u1
- 3.13.5-2+deb13u2
- 3.13.5-2+deb13u3
- 3.13.5-2+deb13u4
- 3.13.5-2+deb13u5
- 3.13.6-1
- 3.13.7-1
- 3.13.8-1
- 3.13.9-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python3.13 Debian:14
- Versions
- 3.13.11-1
- 3.13.12-1
- 3.13.14-1
- 3.13.15-1
- 3.13.5-2
- 3.13.6-1
- 3.13.7-1
- 3.13.8-1
- 3.13.9-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python3.14 Debian:14
- Versions
- 3.14.0-1
- 3.14.0-2
- 3.14.0-3
- 3.14.0-4
- 3.14.0-5
- 3.14.0~a7-1
- 3.14.0~b1-1
- 3.14.0~b2-1
- 3.14.0~b3-1
- 3.14.0~b4-1
- 3.14.0~rc1-1
- 3.14.0~rc2-1
- 3.14.0~rc3-1
- 3.14.2-1
- 3.14.3-1
- 3.14.3-2
- 3.14.3-3
- 3.14.3-4
- 3.14.3-5
- 3.14.4-1
- 3.14.4-2
- 3.14.5-1
- 3.14.5~rc1-1
- 3.14.6-1
- 3.14.7-1
- 3.14.7-2
- 3.14.7-3
- 3.14.7-4
- 3.14.7-5
- Affected ranges
- ECOSYSTEM: < 3.14.8-1
Update to 3.14.8-1
python3.15 Debian:14
- Versions
- 3.15.0~a8-1
- 3.15.0~a8-2
- 3.15.0~b1-1
- 3.15.0~b1-2
- 3.15.0~b1-3
- 3.15.0~b2-1
- 3.15.0~b3-1
- 3.15.0~b4-1
- 3.15.0~rc1-1
- 3.15.0~rc2-1
- 3.15.0~rc2-2
- 3.15.0~rc2-3
- Affected ranges
- ECOSYSTEM: < 3.15.0~rc3-1
Update to 3.15.0~rc3-1
python2.7 Ubuntu:Pro:14.04:LTS
- Versions
- 2.7.5-8ubuntu3
- 2.7.5-8ubuntu4
- 2.7.6-2
- 2.7.6-2ubuntu1
- 2.7.6-3
- 2.7.6-3ubuntu1
- 2.7.6-4
- 2.7.6-4ubuntu1
- 2.7.6-5
- 2.7.6-7
- 2.7.6-8
- 2.7.6-8ubuntu0.2
- 2.7.6-8ubuntu0.3
- 2.7.6-8ubuntu0.4
- 2.7.6-8ubuntu0.5
- 2.7.6-8ubuntu0.6+esm2
- 2.7.6-8ubuntu0.6+esm3
- 2.7.6-8ubuntu0.6+esm5
- 2.7.6-8ubuntu0.6+esm6
- 2.7.6-8ubuntu0.6+esm7
- 2.7.6-8ubuntu0.6+esm8
- 2.7.6-8ubuntu0.6+esm9
- 2.7.6-8ubuntu0.6+esm10
- 2.7.6-8ubuntu0.6+esm11
- 2.7.6-8ubuntu0.6+esm12
- 2.7.6-8ubuntu0.6+esm13
- 2.7.6-8ubuntu0.6+esm14
- 2.7.6-8ubuntu0.6+esm15
- 2.7.6-8ubuntu0.6+esm16
- 2.7.6-8ubuntu0.6+esm17
- 2.7.6-8ubuntu0.6+esm18
- 2.7.6-8ubuntu0.6+esm20
- 2.7.6-8ubuntu0.6+esm21
- 2.7.6-8ubuntu0.6+esm22
- 2.7.6-8ubuntu0.6+esm24
- 2.7.6-8ubuntu0.6+esm25
- 2.7.6-8ubuntu0.6+esm26
- 2.7.6-8ubuntu0.6+esm28
- 2.7.6-8ubuntu0.6+esm29
- 2.7.6-8ubuntu0.6+esm30
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python3.4 Ubuntu:Pro:14.04:LTS
- Versions
- 3.4~b1-0ubuntu3
- 3.4~b1-4ubuntu4
- 3.4~b1-4ubuntu6
- 3.4~b1-5ubuntu2
- 3.4~b2-1
- 3.4~b3-1ubuntu1
- 3.4~rc1-1build1
- 3.4~rc2-1
- 3.4~rc3-0ubuntu1
- 3.4.0-1
- 3.4.0-2ubuntu1
- 3.4.0-2ubuntu1.1
- 3.4.3-1ubuntu1~14.04.1
- 3.4.3-1ubuntu1~14.04.3
- 3.4.3-1ubuntu1~14.04.4
- 3.4.3-1ubuntu1~14.04.5
- 3.4.3-1ubuntu1~14.04.6
- 3.4.3-1ubuntu1~14.04.7
- 3.4.3-1ubuntu1~14.04.7+esm2
- 3.4.3-1ubuntu1~14.04.7+esm4
- 3.4.3-1ubuntu1~14.04.7+esm6
- 3.4.3-1ubuntu1~14.04.7+esm7
- 3.4.3-1ubuntu1~14.04.7+esm8
- 3.4.3-1ubuntu1~14.04.7+esm10
- 3.4.3-1ubuntu1~14.04.7+esm11
- 3.4.3-1ubuntu1~14.04.7+esm12
- 3.4.3-1ubuntu1~14.04.7+esm13
- 3.4.3-1ubuntu1~14.04.7+esm14
- 3.4.3-1ubuntu1~14.04.7+esm15
- 3.4.3-1ubuntu1~14.04.7+esm16
- 3.4.3-1ubuntu1~14.04.7+esm17
- 3.4.3-1ubuntu1~14.04.7+esm19
- 3.4.3-1ubuntu1~14.04.7+esm20
- 3.4.3-1ubuntu1~14.04.7+esm21
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python3.5 Ubuntu:Pro:14.04:LTS
- Versions
- 3.5.2-2ubuntu0~16.04.4~14.04.1
- 3.5.2-2ubuntu0~16.04.4~14.04.1+esm1
- 3.5.2-2ubuntu0~16.04.4~14.04.1+esm3
- 3.5.2-2ubuntu0~16.04.4~14.04.1+esm4
- 3.5.2-2ubuntu0~16.04.4~14.04.1+esm5
- 3.5.2-2ubuntu0~16.04.4~14.04.1+esm6
- 3.5.2-2ubuntu0~16.04.4~14.04.1+esm7
- 3.5.2-2ubuntu0~16.04.4~14.04.1+esm8
- 3.5.2-2ubuntu0~16.04.4~14.04.1+esm9
- 3.5.2-2ubuntu0~16.04.4~14.04.1+esm10
- 3.5.2-2ubuntu0~16.04.4~14.04.1+esm11
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python2.7 Ubuntu:Pro:16.04:LTS
- Versions
- 2.7.10-4ubuntu1
- 2.7.10-4ubuntu2
- 2.7.11-2
- 2.7.11-3
- 2.7.11-4
- 2.7.11-6
- 2.7.11-7
- 2.7.11-7ubuntu1
- 2.7.12-1~16.04
- 2.7.12-1ubuntu0~16.04.1
- 2.7.12-1ubuntu0~16.04.2
- 2.7.12-1ubuntu0~16.04.3
- 2.7.12-1ubuntu0~16.04.4
- 2.7.12-1ubuntu0~16.04.8
- 2.7.12-1ubuntu0~16.04.9
- 2.7.12-1ubuntu0~16.04.11
- 2.7.12-1ubuntu0~16.04.12
- 2.7.12-1ubuntu0~16.04.13
- 2.7.12-1ubuntu0~16.04.14
- 2.7.12-1ubuntu0~16.04.16
- 2.7.12-1ubuntu0~16.04.18
- 2.7.12-1ubuntu0~16.04.18+esm1
- 2.7.12-1ubuntu0~16.04.18+esm2
- 2.7.12-1ubuntu0~16.04.18+esm3
- 2.7.12-1ubuntu0~16.04.18+esm4
- 2.7.12-1ubuntu0~16.04.18+esm5
- 2.7.12-1ubuntu0~16.04.18+esm6
- 2.7.12-1ubuntu0~16.04.18+esm7
- 2.7.12-1ubuntu0~16.04.18+esm8
- 2.7.12-1ubuntu0~16.04.18+esm9
- 2.7.12-1ubuntu0~16.04.18+esm10
- 2.7.12-1ubuntu0~16.04.18+esm11
- 2.7.12-1ubuntu0~16.04.18+esm12
- 2.7.12-1ubuntu0~16.04.18+esm13
- 2.7.12-1ubuntu0~16.04.18+esm15
- 2.7.12-1ubuntu0~16.04.18+esm16
- 2.7.12-1ubuntu0~16.04.18+esm17
- 2.7.12-1ubuntu0~16.04.18+esm18
- 2.7.12-1ubuntu0~16.04.18+esm19
- 2.7.12-1ubuntu0~16.04.18+esm20
- 2.7.12-1ubuntu0~16.04.18+esm21
- 2.7.12-1ubuntu0~16.04.18+esm22
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python3.5 Ubuntu:Pro:16.04:LTS
- Versions
- 3.5.0-3
- 3.5.0-3ubuntu1
- 3.5.1~rc1-2ubuntu1
- 3.5.1-1
- 3.5.1-2
- 3.5.1-3
- 3.5.1-5
- 3.5.1-6ubuntu1
- 3.5.1-6ubuntu2
- 3.5.1-9ubuntu1
- 3.5.1-10
- 3.5.2-2~16.01
- 3.5.2-2~16.04
- 3.5.2-2ubuntu0~16.04.1
- 3.5.2-2ubuntu0~16.04.2
- 3.5.2-2ubuntu0~16.04.3
- 3.5.2-2ubuntu0~16.04.4
- 3.5.2-2ubuntu0~16.04.5
- 3.5.2-2ubuntu0~16.04.8
- 3.5.2-2ubuntu0~16.04.9
- 3.5.2-2ubuntu0~16.04.10
- 3.5.2-2ubuntu0~16.04.11
- 3.5.2-2ubuntu0~16.04.12
- 3.5.2-2ubuntu0~16.04.13
- 3.5.2-2ubuntu0~16.04.13+esm1
- 3.5.2-2ubuntu0~16.04.13+esm2
- 3.5.2-2ubuntu0~16.04.13+esm3
- 3.5.2-2ubuntu0~16.04.13+esm5
- 3.5.2-2ubuntu0~16.04.13+esm6
- 3.5.2-2ubuntu0~16.04.13+esm7
- 3.5.2-2ubuntu0~16.04.13+esm8
- 3.5.2-2ubuntu0~16.04.13+esm9
- 3.5.2-2ubuntu0~16.04.13+esm10
- 3.5.2-2ubuntu0~16.04.13+esm11
- 3.5.2-2ubuntu0~16.04.13+esm12
- 3.5.2-2ubuntu0~16.04.13+esm13
- 3.5.2-2ubuntu0~16.04.13+esm14
- 3.5.2-2ubuntu0~16.04.13+esm15
- 3.5.2-2ubuntu0~16.04.13+esm16
- 3.5.2-2ubuntu0~16.04.13+esm17
- 3.5.2-2ubuntu0~16.04.13+esm18
- 3.5.2-2ubuntu0~16.04.13+esm19
- 3.5.2-2ubuntu0~16.04.13+esm20
- 3.5.2-2ubuntu0~16.04.13+esm21
- 3.5.2-2ubuntu0~16.04.13+esm22
- 3.5.2-2ubuntu0~16.04.13+esm23
- 3.5.2-2ubuntu0~16.04.13+esm24
- 3.5.2-2ubuntu0~16.04.13+esm25
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python2.7 Ubuntu:Pro:18.04:LTS
- Versions
- 2.7.14-2ubuntu2
- 2.7.14-4
- 2.7.14-6
- 2.7.14-7
- 2.7.14-8
- 2.7.15~rc1-1
- 2.7.15~rc1-1ubuntu0.1
- 2.7.15-4ubuntu4~18.04
- 2.7.15-4ubuntu4~18.04.1
- 2.7.15-4ubuntu4~18.04.2
- 2.7.17-1~18.04
- 2.7.17-1~18.04ubuntu1
- 2.7.17-1~18.04ubuntu1.1
- 2.7.17-1~18.04ubuntu1.2
- 2.7.17-1~18.04ubuntu1.3
- 2.7.17-1~18.04ubuntu1.5
- 2.7.17-1~18.04ubuntu1.6
- 2.7.17-1~18.04ubuntu1.7
- 2.7.17-1~18.04ubuntu1.8
- 2.7.17-1~18.04ubuntu1.10
- 2.7.17-1~18.04ubuntu1.11
- 2.7.17-1~18.04ubuntu1.13
- 2.7.17-1~18.04ubuntu1.13+esm1
- 2.7.17-1~18.04ubuntu1.13+esm2
- 2.7.17-1~18.04ubuntu1.13+esm3
- 2.7.17-1~18.04ubuntu1.13+esm4
- 2.7.17-1~18.04ubuntu1.13+esm5
- 2.7.17-1~18.04ubuntu1.13+esm6
- 2.7.17-1~18.04ubuntu1.13+esm7
- 2.7.17-1~18.04ubuntu1.13+esm8
- 2.7.17-1~18.04ubuntu1.13+esm10
- 2.7.17-1~18.04ubuntu1.13+esm11
- 2.7.17-1~18.04ubuntu1.13+esm12
- 2.7.17-1~18.04ubuntu1.13+esm13
- 2.7.17-1~18.04ubuntu1.13+esm14
- 2.7.17-1~18.04ubuntu1.13+esm15
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python3.6 Ubuntu:Pro:18.04:LTS
- Versions
- 3.6.3-1ubuntu1
- 3.6.4~rc1-1
- 3.6.4~rc1-2
- 3.6.4-1
- 3.6.4-2
- 3.6.4-3build1
- 3.6.4-4
- 3.6.5~rc1-1
- 3.6.5-3
- 3.6.6-1~18.04
- 3.6.7-1~18.04
- 3.6.8-1~18.04.1
- 3.6.8-1~18.04.2
- 3.6.8-1~18.04.3
- 3.6.9-1~18.04
- 3.6.9-1~18.04ubuntu1
- 3.6.9-1~18.04ubuntu1.1
- 3.6.9-1~18.04ubuntu1.3
- 3.6.9-1~18.04ubuntu1.4
- 3.6.9-1~18.04ubuntu1.6
- 3.6.9-1~18.04ubuntu1.7
- 3.6.9-1~18.04ubuntu1.8
- 3.6.9-1~18.04ubuntu1.9
- 3.6.9-1~18.04ubuntu1.10
- 3.6.9-1~18.04ubuntu1.12
- 3.6.9-1~18.04ubuntu1.13
- 3.6.9-1~18.04ubuntu1.13+esm1
- 3.6.9-1~18.04ubuntu1.13+esm2
- 3.6.9-1~18.04ubuntu1.13+esm3
- 3.6.9-1~18.04ubuntu1.13+esm4
- 3.6.9-1~18.04ubuntu1.13+esm5
- 3.6.9-1~18.04ubuntu1.13+esm6
- 3.6.9-1~18.04ubuntu1.13+esm7
- 3.6.9-1~18.04ubuntu1.13+esm8
- 3.6.9-1~18.04ubuntu1.13+esm9
- 3.6.9-1~18.04ubuntu1.13+esm10
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python3.7 Ubuntu:Pro:18.04:LTS
- Versions
- 3.7.0~a2-1
- 3.7.0~a3-1
- 3.7.0~a3-2
- 3.7.0~a3-3
- 3.7.0~a4-1
- 3.7.0~b1-1
- 3.7.0~b1-1build1
- 3.7.0~b2-1
- 3.7.0~b3-1
- 3.7.0-1~18.04
- 3.7.1-1~18.04
- 3.7.3-2~18.04.1
- 3.7.5-2~18.04
- 3.7.5-2~18.04.4
- 3.7.5-2ubuntu1~18.04.2
- 3.7.5-2ubuntu1~18.04.2+esm1
- 3.7.5-2ubuntu1~18.04.2+esm2
- 3.7.5-2ubuntu1~18.04.2+esm3
- 3.7.5-2ubuntu1~18.04.2+esm4
- 3.7.5-2ubuntu1~18.04.2+esm5
- 3.7.5-2ubuntu1~18.04.2+esm6
- 3.7.5-2ubuntu1~18.04.2+esm7
- 3.7.5-2ubuntu1~18.04.2+esm8
- 3.7.5-2ubuntu1~18.04.2+esm9
- 3.7.5-2ubuntu1~18.04.2+esm10
- 3.7.5-2ubuntu1~18.04.2+esm11
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python3.8 Ubuntu:Pro:18.04:LTS
- Versions
- 3.8.0-3~18.04
- 3.8.0-3~18.04.1
- 3.8.0-3ubuntu1~18.04.2
- 3.8.0-3ubuntu1~18.04.2+esm1
- 3.8.0-3ubuntu1~18.04.2+esm2
- 3.8.0-3ubuntu1~18.04.2+esm3
- 3.8.0-3ubuntu1~18.04.2+esm4
- 3.8.0-3ubuntu1~18.04.2+esm5
- 3.8.0-3ubuntu1~18.04.2+esm6
- 3.8.0-3ubuntu1~18.04.2+esm7
- 3.8.0-3ubuntu1~18.04.2+esm8
- 3.8.0-3ubuntu1~18.04.2+esm9
- 3.8.0-3ubuntu1~18.04.2+esm10
- 3.8.0-3ubuntu1~18.04.2+esm11
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python3.8 Ubuntu:Pro:20.04:LTS
- Versions
- 3.8.0-1
- 3.8.0-2
- 3.8.0-3
- 3.8.0-4
- 3.8.0-5
- 3.8.1-2ubuntu3
- 3.8.2~rc1-1ubuntu1
- 3.8.2-1
- 3.8.2-1ubuntu1
- 3.8.2-1ubuntu1.1
- 3.8.2-1ubuntu1.2
- 3.8.5-1~20.04
- 3.8.5-1~20.04.2
- 3.8.5-1~20.04.3
- 3.8.10-0ubuntu1~20.04
- 3.8.10-0ubuntu1~20.04.1
- 3.8.10-0ubuntu1~20.04.2
- 3.8.10-0ubuntu1~20.04.4
- 3.8.10-0ubuntu1~20.04.5
- 3.8.10-0ubuntu1~20.04.6
- 3.8.10-0ubuntu1~20.04.7
- 3.8.10-0ubuntu1~20.04.8
- 3.8.10-0ubuntu1~20.04.9
- 3.8.10-0ubuntu1~20.04.10
- 3.8.10-0ubuntu1~20.04.11
- 3.8.10-0ubuntu1~20.04.12
- 3.8.10-0ubuntu1~20.04.13
- 3.8.10-0ubuntu1~20.04.14
- 3.8.10-0ubuntu1~20.04.15
- 3.8.10-0ubuntu1~20.04.16
- 3.8.10-0ubuntu1~20.04.17
- 3.8.10-0ubuntu1~20.04.18
- 3.8.10-0ubuntu1~20.04.18+esm1
- 3.8.10-0ubuntu1~20.04.18+esm2
- 3.8.10-0ubuntu1~20.04.18+esm3
- 3.8.10-0ubuntu1~20.04.18+esm4
- 3.8.10-0ubuntu1~20.04.18+esm5
- 3.8.10-0ubuntu1~20.04.18+esm6
- 3.8.10-0ubuntu1~20.04.18+esm7
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python2.7 Ubuntu:Pro:20.04:LTS
- Versions
- 2.7.17~rc1-1
- 2.7.17-1
- 2.7.17-1ubuntu5
- 2.7.17-1ubuntu6
- 2.7.18~rc1-2
- 2.7.18-1~20.04
- 2.7.18-1~20.04.1
- 2.7.18-1~20.04.1+esm1
- 2.7.18-1~20.04.3
- 2.7.18-1~20.04.3+esm1
- 2.7.18-1~20.04.4
- 2.7.18-1~20.04.4+esm1
- 2.7.18-1~20.04.4+esm2
- 2.7.18-1~20.04.4+esm3
- 2.7.18-1~20.04.5
- 2.7.18-1~20.04.5+esm1
- 2.7.18-1~20.04.5+esm2
- 2.7.18-1~20.04.6
- 2.7.18-1~20.04.6+esm1
- 2.7.18-1~20.04.7
- 2.7.18-1~20.04.7+esm3
- 2.7.18-1~20.04.7+esm4
- 2.7.18-1~20.04.7+esm6
- 2.7.18-1~20.04.7+esm7
- 2.7.18-1~20.04.7+esm8
- 2.7.18-1~20.04.7+esm9
- 2.7.18-1~20.04.7+esm10
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python3.9 Ubuntu:Pro:20.04:LTS
- Versions
- 3.9.0~rc1-1~20.04
- 3.9.0-5~20.04
- 3.9.5-3~20.04.1
- 3.9.5-3ubuntu0~20.04.1
- 3.9.5-3ubuntu0~20.04.1+esm1
- 3.9.5-3ubuntu0~20.04.1+esm2
- 3.9.5-3ubuntu0~20.04.1+esm3
- 3.9.5-3ubuntu0~20.04.1+esm4
- 3.9.5-3ubuntu0~20.04.1+esm5
- 3.9.5-3ubuntu0~20.04.1+esm6
- 3.9.5-3ubuntu0~20.04.1+esm7
- 3.9.5-3ubuntu0~20.04.1+esm8
- 3.9.5-3ubuntu0~20.04.1+esm9
- 3.9.5-3ubuntu0~20.04.1+esm10
- 3.9.5-3ubuntu0~20.04.1+esm11
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python3.10 Ubuntu:22.04:LTS
- Versions
- 3.10.0-2
- 3.10.0-3
- 3.10.0-4
- 3.10.0-5
- 3.10.0-5build1
- 3.10.1-1
- 3.10.1-2
- 3.10.2-1
- 3.10.2-5
- 3.10.2-7
- 3.10.3-1
- 3.10.4-3
- 3.10.4-3ubuntu0.1
- 3.10.6-1~22.04
- 3.10.6-1~22.04.1
- 3.10.6-1~22.04.2
- 3.10.6-1~22.04.2ubuntu1
- 3.10.6-1~22.04.2ubuntu1.1
- 3.10.12-1~22.04.2
- 3.10.12-1~22.04.3
- 3.10.12-1~22.04.4
- 3.10.12-1~22.04.5
- 3.10.12-1~22.04.6
- 3.10.12-1~22.04.7
- 3.10.12-1~22.04.8
- 3.10.12-1~22.04.9
- 3.10.12-1~22.04.10
- 3.10.12-1~22.04.11
- 3.10.12-1~22.04.12
- 3.10.12-1~22.04.13
- 3.10.12-1~22.04.14
- 3.10.12-1~22.04.15
- 3.10.12-1~22.04.16
- 3.10.12-1~22.04.17
- 3.10.12-1~22.04.18
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python2.7 Ubuntu:Pro:22.04:LTS
- Versions
- 2.7.18-8build1
- 2.7.18-13
- 2.7.18-13ubuntu1
- 2.7.18-13ubuntu1.1
- 2.7.18-13ubuntu1.1+esm2
- 2.7.18-13ubuntu1.2
- 2.7.18-13ubuntu1.2+esm1
- 2.7.18-13ubuntu1.2+esm2
- 2.7.18-13ubuntu1.2+esm3
- 2.7.18-13ubuntu1.3
- 2.7.18-13ubuntu1.3+esm1
- 2.7.18-13ubuntu1.4
- 2.7.18-13ubuntu1.4+esm1
- 2.7.18-13ubuntu1.5
- 2.7.18-13ubuntu1.5+esm2
- 2.7.18-13ubuntu1.5+esm3
- 2.7.18-13ubuntu1.5+esm5
- 2.7.18-13ubuntu1.5+esm6
- 2.7.18-13ubuntu1.5+esm7
- 2.7.18-13ubuntu1.5+esm8
- 2.7.18-13ubuntu1.5+esm9
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python3.11 Ubuntu:Pro:22.04:LTS
- Versions
- 3.11.0~rc1-1~22.04
- 3.11.0~rc1-1~22.04.1~esm1
- 3.11.0~rc1-1~22.04.1~esm2
- 3.11.0~rc1-1~22.04.1~esm3
- 3.11.0~rc1-1~22.04.1~esm4
- 3.11.0~rc1-1~22.04.1~esm5
- 3.11.0~rc1-1~22.04.1~esm6
- 3.11.0~rc1-1~22.04.1~esm7
- 3.11.0~rc1-1~22.04.1~esm8
- 3.11.0~rc1-1~22.04.1~esm9
- 3.11.0~rc1-1~22.04.1
- 3.11.0~rc1-1~22.04.1+esm1
- 3.11.0~rc1-1~22.04.1+esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
Original sources
- https://github.com/python/cpython/pull/158503
- https://github.com/python/cpython/issues/156793
- https://mail.python.org/archives/list/[email protected]/thread/QNZRG3YOAMTHDCMVCICXGY6YEFPY2VDL/
- https://github.com/python/cpython/commit/1697ea386c707142555d98a1263176bbbc014a96
- https://github.com/python/cpython/commit/641390146a16a38e6701923f4ee4f1940ae77082
- https://github.com/python/cpython/commit/966bf426d0b6c31c1b0a255ff14a17143a466ced
- https://github.com/python/cpython/commit/f4e43ba525187282f2011da0e6ffc0d2b08d8062
- https://github.com/python/cpython/commit/869069d52ce0efab2f8c38197e92cdaaa312f1ed
- https://github.com/python/cpython/commit/5867d4e4ae6d1062352baf6b497a4026e8578ccf
- https://github.com/python/cpython/commit/bdebbf9b366ec91e9cd9daa0b3510c9e84b60b80
- http://www.openwall.com/lists/oss-security/2026/09/30/16
- https://nvd.nist.gov/vuln/detail/CVE-2026-19553