A use-after-free in ext/soap can be triggered with crafted SOAP data and may lead to code execution.
Affected versions
| Branch | Affected | Fixed in |
|---|---|---|
| PHP 8.5 | < 8.5.6 | 8.5.6 |
| PHP 8.4 | < 8.4.21 | 8.4.21 |
| PHP 8.3 | < 8.3.31 | 8.3.31 |
| PHP 8.2 | < 8.2.31 | 8.2.31 |
Older branches: not assessed
Exploitation conditions
- SOAP extension handling untrusted input
Remediation
Upgrade to 8.2.31, 8.3.31, 8.4.21, 8.5.6 or a later release of your branch. If your branch is end-of-life, move to a supported branch. Distribution packages may carry a backported fix under an older version number; confirm with your vendor's security tracker.
A version number alone cannot prove patch status. Linux distributions and hosting providers often backport security fixes without changing the version. Check your vendor’s changelog.
Severity scores
| CVSS | Source | Vector |
|---|---|---|
| 9.8 v3.1 | NVD | — |
| 9.5 v4.0 | NVD | — |
| 8.1 v3.1 | CNA | — |
References
Data provenance
Secondary sources · pending primary verificationLast reviewed: Oct 24, 2026 · Source
Notes: Scores conflict between sources (NVD 9.8 / distribution 8.1). Assembled from secondary sources.