CVE-2025-6491

NameCVE-2025-6491
DescriptionIn PHP versions:8.1.* before 8.1.33, 8.2.* before 8.2.29, 8.3.* before 8.3.23, 8.4.* before 8.4.10 when parsing XML data in SOAP extensions, overly large (>2Gb) XML namespace prefix may lead to null pointer dereference. This may lead to crashes and affect the availability of the target server.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
php7.4 (PTS)bullseye7.4.33-1+deb11u5vulnerable
bullseye (security)7.4.33-1+deb11u8vulnerable
php8.2 (PTS)bookworm, bookworm (security)8.2.28-1~deb12u1vulnerable
php8.4 (PTS)sid, trixie8.4.10-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
php7.4source(unstable)(unfixed)
php8.2source(unstable)(unfixed)
php8.4source(unstable)8.4.10-1

Notes

https://github.com/php/php-src/security/advisories/GHSA-453j-q27h-5p8x
Fixed by: https://github.com/php/php-src/commit/9cb3d8d200f0c822b17bda35a2a67a97b039d3e1 (php-8.1.33)

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