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CVE-2026-102633

CVE-2026-102633 · libexpat 2.7.2 through 2.8.5 Integer Overflow in expat_realloc

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.

libexpat versions 2.7.2 through 2.8.5 contain an integer overflow vulnerability in expat_realloc() function on 32-bit platforms when computing allocation sizes. Attackers supplying malicious XML to applications parsing with vulnerable libexpat can cause heap buffer overflow, memory corruption, or denial of service.

CVSS 8.2 · High · EPSS 0.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • libexpat

    Versions
    • ≥ 2.7.2, ≤ 2.8.5: Affected (semver)

    No fix published

  • expat Debian:12

    Versions
    • 2.5.0-1
    • 2.5.0-1+deb12u1
    • 2.5.0-1+deb12u2
    • 2.5.0-1+deb12u3
    • 2.5.0-1+deb12u4
    Affected ranges
    • ECOSYSTEM: < 2.5.0-1+deb12u5

    Update to 2.5.0-1+deb12u5

  • expat Debian:13

    Versions
    • 2.7.1-2
    • 2.7.2-1
    • 2.7.3-1
    • 2.7.3-2
    • 2.7.4-1
    • 2.7.5-1
    • 2.8.0-1
    • 2.8.0-2
    • 2.8.1-1
    • 2.8.2-1
    • 2.8.2-1~deb13u1
    • 2.8.3-1
    • 2.8.3-1~deb13u1
    • 2.8.4-1
    • 2.8.4-2
    • 2.8.5-1
    • 2.8.5-2
    Affected ranges
    • ECOSYSTEM: < 2.9.0-1~deb13u1

    Update to 2.9.0-1~deb13u1

  • expat Debian:14

    Versions
    • 2.7.1-2
    • 2.7.2-1
    • 2.7.3-1
    • 2.7.3-2
    • 2.7.4-1
    • 2.7.5-1
    • 2.8.0-1
    • 2.8.0-2
    • 2.8.1-1
    • 2.8.2-1
    • 2.8.2-1~deb13u1
    • 2.8.3-1
    • 2.8.3-1~deb13u1
    • 2.8.4-1
    • 2.8.4-2
    • 2.8.5-1
    Affected ranges
    • ECOSYSTEM: < 2.8.5-2

    Update to 2.8.5-2

  • coin3 Ubuntu:Pro:14.04:LTS

    Versions
    • 3.1.4~abc9f50-3
    • 3.1.4~abc9f50-4
    • 3.1.4~abc9f50-4ubuntu2
    • 3.1.4~abc9f50-4ubuntu2+esm1
    • 3.1.4~abc9f50-4ubuntu2+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • expat Ubuntu:Pro:14.04:LTS

    Versions
    • 2.1.0-4
    • 2.1.0-4ubuntu1
    • 2.1.0-4ubuntu1.1
    • 2.1.0-4ubuntu1.2
    • 2.1.0-4ubuntu1.3
    • 2.1.0-4ubuntu1.4
    • 2.1.0-4ubuntu1.4+esm1
    • 2.1.0-4ubuntu1.4+esm2
    • 2.1.0-4ubuntu1.4+esm4
    • 2.1.0-4ubuntu1.4+esm6
    • 2.1.0-4ubuntu1.4+esm7
    • 2.1.0-4ubuntu1.4+esm8
    • 2.1.0-4ubuntu1.4+esm9
    • 2.1.0-4ubuntu1.4+esm10
    • 2.1.0-4ubuntu1.4+esm11
    • 2.1.0-4ubuntu1.4+esm12
    • 2.1.0-4ubuntu1.4+esm13
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • vnc4 Ubuntu:Pro:14.04:LTS

    Versions
    • 4.1.1+xorg4.3.0-37ubuntu5
    • 4.1.1+xorg4.3.0-37ubuntu5.0.1
    • 4.1.1+xorg4.3.0-37ubuntu5.0.2
    • 4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • vtk Ubuntu:Pro:14.04:LTS

    Versions
    • 5.8.0-14ubuntu1
    • 5.8.0-14ubuntu3
    • 5.8.0-14.1ubuntu2
    • 5.8.0-14.1ubuntu3
    • 5.8.0-14.1ubuntu3+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • xmlrpc-c Ubuntu:Pro:14.04:LTS

    Versions
    • 1.16.33-3.2ubuntu3
    • 1.33.06-0ubuntu1
    • 1.33.06-0ubuntu1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • expat Ubuntu:Pro:16.04:LTS

    Versions
    • 2.1.0-7
    • 2.1.0-7ubuntu0.16.04.1
    • 2.1.0-7ubuntu0.16.04.2
    • 2.1.0-7ubuntu0.16.04.3
    • 2.1.0-7ubuntu0.16.04.4
    • 2.1.0-7ubuntu0.16.04.5
    • 2.1.0-7ubuntu0.16.04.5+esm2
    • 2.1.0-7ubuntu0.16.04.5+esm5
    • 2.1.0-7ubuntu0.16.04.5+esm6
    • 2.1.0-7ubuntu0.16.04.5+esm7
    • 2.1.0-7ubuntu0.16.04.5+esm8
    • 2.1.0-7ubuntu0.16.04.5+esm9
    • 2.1.0-7ubuntu0.16.04.5+esm10
    • 2.1.0-7ubuntu0.16.04.5+esm11
    • 2.1.0-7ubuntu0.16.04.5+esm12
    • 2.1.0-7ubuntu0.16.04.5+esm13
    • 2.1.0-7ubuntu0.16.04.5+esm14
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • ayttm Ubuntu:Pro:16.04:LTS

    Versions
    • 0.6.3-3build1
    • 0.6.3-3ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cableswig Ubuntu:Pro:16.04:LTS

    Versions
    • 0.1.0+git20150808-1
    • 0.1.0+git20150808-2
    • 0.1.0+git20150808-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • cadaver Ubuntu:16.04:LTS

    Versions
    • 0.23.3-2ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • coin3 Ubuntu:Pro:16.04:LTS

    Versions
    • 3.1.4~abc9f50+dfsg1-1
    • 3.1.4~abc9f50+dfsg1-1ubuntu0.1~esm1
    • 3.1.4~abc9f50+dfsg1-1ubuntu0.1~esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • gdcm Ubuntu:16.04:LTS

    Versions
    • 2.4.4-4
    • 2.4.4-4build1
    • 2.4.4-4ubuntu1
    • 2.6.1-3
    • 2.6.2-1
    • 2.6.2-2
    • 2.6.2-3
    • 2.6.3-1
    • 2.6.3-1ubuntu1
    • 2.6.3-2ubuntu1
    • 2.6.3-3ubuntu1
    • 2.6.3-3ubuntu3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • insighttoolkit4 Ubuntu:16.04:LTS

    Versions
    • 4.8.1-1ubuntu3
    • 4.8.1-1ubuntu4
    • 4.8.2-3.1ubuntu1
    • 4.9.0-3ubuntu2
    • 4.9.0-4ubuntu1
    • 4.9.0-4ubuntu1.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • libxmltok Ubuntu:Pro:16.04:LTS

    Versions
    • 1.2-3build3
    • 1.2-3ubuntu0.1~esm1
    • 1.2-3ubuntu0.16.04.1~esm1
    • 1.2-3ubuntu0.16.04.1~esm2
    • 1.2-3ubuntu0.16.04.1~esm3
    • 1.2-3ubuntu0.16.04.1~esm4
    • 1.2-3ubuntu0.16.04.1~esm5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • matanza Ubuntu:16.04:LTS

    Versions
    • 0.13+ds1-5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • smart Ubuntu:16.04:LTS

    Versions
    • 1.4-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • swish-e Ubuntu:Pro:16.04:LTS

    Versions
    • 2.4.7-4
    • 2.4.7-4build1
    • 2.4.7-4ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • tdom Ubuntu:16.04:LTS

    Versions
    • 0.8.3-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • vnc4 Ubuntu:Pro:16.04:LTS

    Versions
    • 4.1.1+xorg4.3.0-37.3ubuntu2
    • 4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • vtk Ubuntu:Pro:16.04:LTS

    Versions
    • 5.10.1+dfsg-2
    • 5.10.1+dfsg-2build3
    • 5.10.1+dfsg-2.1build1
    • 5.10.1+dfsg-2.1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wbxml2 Ubuntu:16.04:LTS

    Versions
    • 0.10.7-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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