PT-2026-34537 · Unknown · Xerte Online Toolkits

Bootstrapbool · Published 2026-04-22 · Updated 2026-04-23 · CVE-2026-34415

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Xerte Online Toolkits versions 3.15 and earlier

Description Incomplete input validation in the elFinder connector endpoint fails to block PHP-executable extensions such as .php4 due to an incorrect regex pattern. Unauthenticated attackers can combine this flaw with authentication bypass and path traversal to upload malicious PHP code, rename it with a .php4 extension, and execute arbitrary operating system commands on the server.

Recommendations Update to a version later than 3.15.

Exploit

Fix

RCE

Incomplete List of Disallowed Inputs

Weakness Enumeration

CWE-184

Related Identifiers

CVE-2026-34415

Affected Products

Xerte Online Toolkits

References · 13

• 🔥 https://github.com/bootstrapbool/xerteonlinetoolkits-rce · Exploit
• https://github.com/thexerteproject/xerteonlinetoolkits/commit/02661be88cc369325ea01b508086bde7fbfec805 · Patch
• https://github.com/thexerteproject/xerteonlinetoolkits/commit/507d55c5e91bf9310b5b1c7fad8aebfef902ad23 · Patch
• https://github.com/thexerteproject/xerteonlinetoolkits/commit/17e4f945fe6a3400fa88c01eda18c1075ee4a212 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-34415 · Security Note
• https://github.com/thexerteproject/xerteonlinetoolkits/issues/1527 · Note
• https://xerte.org.uk/xertetoolkits_3.15_ChangeLog.html · Note
• https://vulncheck.com/advisories/xerte-online-toolkits-file-upload-rce-via-elfinder-connector · Note
• https://twitter.com/CVEnew/status/2047359965912838632 · Twitter Post
• https://twitter.com/0dayPublishing/status/2047026380861296909 · Twitter Post
• https://twitter.com/infoflowcloud/status/2047362010732470739 · Twitter Post
• https://xerte.org.uk/index.php/en/downloads-1/category/3-xerte-online-toolkits · Note
• https://twitter.com/OrizonCyber/status/2047035224484094198 · Twitter Post