CVE-2026-34415

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.

CVSS v4.0

9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

3.57% chance of exploitation in the next 30 days, 89th percentile

Published

2026-04-22

Updated

2026-07-14

Proof-of-concept exploits (1)

• bootstrapbool/xerteonlinetoolkits-rce0★ · 2026-06-07

Metasploit modules (1)

• rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/xerte_unauthenticated…

References

• CVE Record
• NVD entry

Related

• CVE-2024-46987
• CVE-2026-34413
• CVE-2026-34414
• CVE-2026-41459
• CVE-2026-4257
• CVE-2026-34416