CVE-2026-79362 Woltlab WCF - Remote Code Execution

Woltlab WCF >= 6.1.0 < 6.1.23 and >= 6.2.0 < 6.2.6 contain a remote code execution caused by cache poisoning via premature nowdoc termination in executable cache files, letting authenticated low-privileged users execute arbitrary PHP code.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.63% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
11 September 2026
Updated
15 October 2026
Weakness
CWE-94

Vendor fix

Update to version 6.1.23, 6.2.6 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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