PatchTheCVECVE-2026-34413: Xerte Online Toolkits versions 3.15 and earlier contain a missing authentication vulnerability in the elFinder
CVE-2026-34413 is a high-severity flaw (CVSS 8.6) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Xerte Online Toolkits versions 3.15 and earlier contain a missing authentication vulnerability in the elFinder connector endpoint at /editor/elfinder/php/connector.php where an HTTP redirect to unauthenticated callers does not call exit() or die(), allowing PHP execution to continue and process the full request server-side. Unauthenticated attackers can perform file operations on project media directories including creating directories, uploading
Why this priority
- High severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.6 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 3.1% (top 12%) |
| CISA exploited list | No |
| Weakness | CWE-497 |
| Published | 2026-04-22 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Write-up: github.com/thexerteproject/xerteonlinetoolkits/issues/1527
- Write-up: www.vulncheck.com/advisories/xerte-online-toolkits-missing-authentication-via-connector-ph
- Write-up: xerte.org.uk/xertetoolkits_3.15_ChangeLog.html
- Metasploit: Xerte Online Toolkits Arbitrary File Upload - Unauthenticated Media Upload
- Nuclei scan template: Xerte Online Toolkits <= 3.15 - Remote Code Execution
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-34413?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-34413 being exploited?
CVE-2026-34413 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-34413 affect?
CVE-2026-34413 affects affected software. Severity is high (CVSS 8.6). Xerte Online Toolkits versions 3.15 and earlier contain a missing authentication vulnerability in the elFinder connector endpoint at /editor/elfinder/php/connector.php where an HTTP redirect to unauthenticated callers does not call exit() o
How urgent is CVE-2026-34413?
Priority 62/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action