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CVE-2026-23490

CVE-2026-23490 · pyasn1 has a DoS vulnerability in decoder

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.

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.2, a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets. This vulnerability is fixed in 0.6.2.

CVSS 7.5 · High · EPSS 0.8% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • pyasn1

    Versions
    • < 0.6.2: Affected

    No fix published

  • pyasn1 Debian:12

    Versions
    • 0.4.8-3
    Affected ranges
    • ECOSYSTEM: < 0.4.8-3+deb12u1

    Update to 0.4.8-3+deb12u1

  • pyasn1 Debian:13

    Versions
    • 0.6.1-1
    Affected ranges
    • ECOSYSTEM: < 0.6.1-1+deb13u1

    Update to 0.6.1-1+deb13u1

  • pyasn1 Debian:14

    Versions
    • 0.6.1-1
    • 0.6.2-1~bpo13+1
    Affected ranges
    • ECOSYSTEM: < 0.6.2-1

    Update to 0.6.2-1

  • pyasn1 PyPI

    Versions
    • 0.6.1
    Affected ranges
    • ECOSYSTEM: ≥ 0.6.1, < 0.6.2

    Update to 0.6.2

  • pyasn1 Ubuntu:Pro:14.04:LTS

    Versions
    • 0.1.4-0ubuntu1
    • 0.1.7-1ubuntu1
    • 0.1.7-1ubuntu2
    • 0.1.7-1ubuntu2.1
    Affected ranges
    • ECOSYSTEM: < 0.1.7-1ubuntu2.1+esm1

    Update to 0.1.7-1ubuntu2.1+esm1

  • pyasn1 Ubuntu:Pro:16.04:LTS

    Versions
    • 0.1.8-2
    • 0.1.9-1
    Affected ranges
    • ECOSYSTEM: < 0.1.9-1ubuntu0.1~esm1

    Update to 0.1.9-1ubuntu0.1~esm1

  • pyasn1 Ubuntu:Pro:18.04:LTS

    Versions
    • 0.1.9-2
    • 0.4.2-3
    Affected ranges
    • ECOSYSTEM: < 0.4.2-3ubuntu0.18.04.1~esm1

    Update to 0.4.2-3ubuntu0.18.04.1~esm1

  • pyasn1 Ubuntu:Pro:20.04:LTS

    Versions
    • 0.4.2-3
    • 0.4.2-3build1
    Affected ranges
    • ECOSYSTEM: < 0.4.2-3ubuntu0.20.04.1~esm1

    Update to 0.4.2-3ubuntu0.20.04.1~esm1

  • pyasn1 Ubuntu:22.04:LTS

    Versions
    • 0.4.8-1
    Affected ranges
    • ECOSYSTEM: < 0.4.8-1ubuntu0.1

    Update to 0.4.8-1ubuntu0.1

  • pyasn1 Ubuntu:24.04:LTS

    Versions
    • 0.4.8-4
    Affected ranges
    • ECOSYSTEM: < 0.4.8-4ubuntu0.1

    Update to 0.4.8-4ubuntu0.1

  • pyasn1 Ubuntu:25.10

    Versions
    • 0.6.1-1
    Affected ranges
    • ECOSYSTEM: < 0.6.1-1ubuntu0.1

    Update to 0.6.1-1ubuntu0.1

Original sources

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