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CVE-2026-113351

CVE-2026-113351 · libexpat 2.7.2 through 2.9.0 Denial of Service via XML_ParserReset

This page contains facts from public vulnerability sources. Check the original advisory before updating.

libexpat 2.7.2 through 2.9.0 contains a denial of service vulnerability because XML_ParserReset zeroes the direct byte count but never offsets tracked heap allocations. Attackers can submit a large XML document so later documents on the same reset parser fail with XML_ERROR_NO_MEMORY until it is recreated.

CVSS 8.2 · High · EPSS 0.5%

Published
Updated

Stack: system

Affected products and versions

  • libexpat

    Versions
    • ≥ 2.7.2, ≤ 2.9.0: 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
    • 2.5.0-1+deb12u5
    • 2.5.0-2
    • 2.6.0-1
    • 2.6.1-1
    • 2.6.1-2
    • 2.6.2-1
    • 2.6.2-2
    • 2.6.3-1
    • 2.6.3-2
    • 2.6.4-1
    • 2.7.0-1
    • 2.7.1-1
    • 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
    • 2.9.0-1
    • 2.9.0-1~deb13u1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • 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
    • 2.9.0-1
    • 2.9.0-1~deb13u1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • 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
    • 2.8.5-2
    • 2.9.0-1
    • 2.9.0-1~deb13u1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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