CVE-2026-34415: thexerteproject xerteonlinetoolkits · Incomplete List of Disallowed Inputs
Affects thexerteproject xerteonlinetoolkitsSource CVE Database V5
Public exploit available (Metasploit) · CVSS 9.3 Critical.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 3.5% chance of exploitation in 30 days – higher than 89% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 22 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| thexerteprojectxerteonlinetoolkits | Affected
| Fixed in– |
GitHubthexerteproject/xerteonlinetoolkitspkg:github/thexerteproject/xerteonlinetoolkitsOther threats | Affected
| Fixed in– |
GitHubxerteonlinetoolkitspkg:github/xerteonlinetoolkitsOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until an official fix is available, restrict access to the elFinder connector endpoint and monitor for suspicious upload activity. Avoid exposing the vulnerable versions publicly and consider upgrading once a patch is released.
Description
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.
References
- github.com/bootstrapbool/xerteonlinetoolkits-rce (opens in a new tab)
- xerte.org.uk/xertetoolkits_3.15_ChangeLog.html (opens in a new tab)
- xerte.org.uk/index.php/en/downloads-1/category/3-xerte-online-toolkits (opens in a new tab)
- github.com/thexerteproject/xerteonlinetoolkits/issues/1527 (opens in a new tab)
- github.com/thexerteproject/xerteonlinetoolkits/commit/02661be88cc369325ea01b508086bde7fbfec805 (opens in a new tab)
- github.com/thexerteproject/xerteonlinetoolkits/commit/17e4f945fe6a3400fa88c01eda18c1075ee4a212 (opens in a new tab)
- github.com/thexerteproject/xerteonlinetoolkits/commit/507d55c5e91bf9310b5b1c7fad8aebfef902ad23 (opens in a new tab)
- vulncheck.com/advisories/xerte-online-toolkits-file-upload-rce-via-elfinder-connector (opens in a new tab)