p PatchFirst

CVE-2026-5263

CVE-2026-5263 · URI nameConstraints not enforced in ConfirmNameConstraints()

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

URI nameConstraints from constrained intermediate CAs are parsed but not enforced during certificate chain verification in wolfcrypt/src/asn.c. A compromised or malicious sub-CA could issue leaf certificates with URI SAN entries that violate the nameConstraints of the issuing CA, and wolfSSL would accept them as valid.

CVSS 7.0 · High · EPSS 0.2% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • wolfssl

    Versions
    • ≥ 0, < 5.9.1: Affected (semver)

    Update to 5.9.1

  • wolfssl Debian:12

    Versions
    • 5.5.4-2
    • 5.5.4-2+deb12u1
    • 5.5.4-2+deb12u2
    • 5.5.4-2+deb12u3
    • 5.5.4-2.1
    • 5.6.4-1
    • 5.6.4-2
    • 5.6.6-1
    • 5.6.6-1.1
    • 5.6.6-1.2
    • 5.6.6-1.3
    • 5.6.6-1.3~exp1
    • 5.7.0-0.1
    • 5.7.0-0.2
    • 5.7.0-0.3
    • 5.7.2-0.1
    • 5.7.2-0.2
    • 5.7.2-0.3
    • 5.7.2-0.4
    • 5.8.2-1
    • 5.8.2-1.1
    • 5.8.2-1.2
    • 5.8.4-1
    • 5.9.0-0.1
    • 5.9.0-0.2
    • 5.9.1-0.1
    • 5.9.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wolfssl Debian:13

    Versions
    • 5.7.2-0.1
    • 5.7.2-0.1+deb13u1
    • 5.7.2-0.1+deb13u2
    • 5.7.2-0.2
    • 5.7.2-0.3
    • 5.7.2-0.4
    • 5.8.2-1
    • 5.8.2-1.1
    • 5.8.2-1.2
    • 5.8.4-1
    • 5.9.0-0.1
    • 5.9.0-0.2
    • 5.9.1-0.1
    • 5.9.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wolfssl Ubuntu:16.04:LTS

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

    No fix published

  • wolfssl Ubuntu:18.04:LTS

    Versions
    • 3.10.2+dfsg-2
    • 3.12.0+dfsg-1
    • 3.12.2+dfsg-1
    • 3.13.0+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wolfssl Ubuntu:20.04:LTS

    Versions
    • 4.1.0+dfsg-2
    • 4.2.0+dfsg-1
    • 4.2.0+dfsg-2
    • 4.2.0+dfsg-3
    • 4.3.0+dfsg-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wolfssl Ubuntu:22.04:LTS

    Versions
    • 4.6.0-3
    • 5.0.0-1
    • 5.1.1-1
    • 5.2.0-1
    • 5.2.0-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wolfssl Ubuntu:24.04:LTS

    Versions
    • 5.5.4-2
    • 5.5.4-2.1
    • 5.6.4-2
    • 5.6.6-1.2
    • 5.6.6-1.3
    • 5.6.6-1.3build1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wolfssl Ubuntu:25.10

    Versions
    • 5.7.2-0.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wolfssl Ubuntu:26.10

    Versions
    • 5.9.1-0.1
    • 5.9.2-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • wolfssl Ubuntu:26.04:LTS

    Versions
    • 5.7.2-0.1
    • 5.8.2-1.2
    • 5.8.4-1
    • 5.9.1-0.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

Check your server →