CVE-2026-34413
HighPublic exploitXerte 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…
Published Apr 22, 2026 · Updated Aug 12, 2026 · Also known as EUVD-2026-25067, GHSA-g35c-vgp7-f8qm
Key Facts
Patch immediately- CVE-2026-34413 is a high-severity vulnerability (CVSS 8.8 v4) affecting xerteonlinetoolkits.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 3.1% probability of exploitation in the next 30 days.
- Fixed versions are available, including xerteonlinetoolkits 507d55c5e91bf9310b5b1c7fad8aebfef902ad23.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
CVSS v4
8.8
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (30-day exploit likelihood)
3.1%
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2026-34413 brief as a PDF
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Description
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 files, renaming files, duplicating files, overwriting files, and deleting files, which can be chained with path traversal and extension blocklist vulnerabilities to achieve remote code execution and arbitrary file read.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| xerteonlinetoolkits | See advisory | 507d55c5e91bf9310b5b1c7fad8aebfef902ad23 |
Patched Releases
xerteonlinetoolkits
507d55c5e91bf9310b5b1c7fad8aebfef902ad23
Timeline
Publicly disclosed
Apr 22, 2026
Last updated
Aug 12, 2026
Weakness Type
- CWE-497 Exposure of Sensitive System Information to an Unauthorized Control Sphere
References
- advisoryhttps://github.com/bootstrapbool/xerteonlinetoolkits-rce
- advisoryhttps://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34413.json
- advisoryhttps://github.com/thexerteproject/xerteonlinetoolkits/commit/02661be88cc369325ea01b508086bde7fbfec805
- advisoryhttps://github.com/thexerteproject/xerteonlinetoolkits/commit/17e4f945fe6a3400fa88c01eda18c1075ee4a212
- advisoryhttps://github.com/thexerteproject/xerteonlinetoolkits/commit/507d55c5e91bf9310b5b1c7fad8aebfef902ad23
FAQ
Common Questions.
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…
Affected: xerteonlinetoolkits. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including xerteonlinetoolkits 507d55c5e91bf9310b5b1c7fad8aebfef902ad23.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
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