CVE-2026-34415

Summary

Xerte Online Toolkits versions 3.15 and earlier contain an incomplete input validation vulnerability in the elFinder connector endpoint that fails to block PHP-executable extensions .php4 due to an incorrect regex pattern. Unauthenticated attackers can exploit this flaw combined with authentication bypass and path traversal vulnerabilities to upload malicious PHP code, rename it with a .php4 extension, and execute arbitrary operating system commands on the server.

Affected Software

Weaknesses

• CWE-184: CWE-184 Incomplete List of Disallowed Inputs

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

• https://github.com/bootstrapbool/xerteonlinetoolkits-rce
• https://xerte.org.uk/xertetoolkits_3.15_ChangeLog.html
• https://xerte.org.uk/index.php/en/downloads-1/category/3-xerte-online-toolkits
• https://github.com/thexerteproject/xerteonlinetoolkits/issues/1527
• https://github.com/thexerteproject/xerteonlinetoolkits/commit/02661be88cc369325ea01b508086bde7fbfec805
• https://github.com/thexerteproject/xerteonlinetoolkits/commit/17e4f945fe6a3400fa88c01eda18c1075ee4a212
• https://github.com/thexerteproject/xerteonlinetoolkits/commit/507d55c5e91bf9310b5b1c7fad8aebfef902ad23
• https://www.vulncheck.com/advisories/xerte-online-toolkits-file-upload-rce-via-elfinder-connector

• ←Previous
• Next→