High severity · published Sep 11, 2026
CVE-2026-79362
Certain Woltlab products are affected by RCE via Cache Poisoning
8.8
CVSS
0.6%
EPSS
No
On KEV
Description
Certain Woltlab products are affected by RCE via Cache Poisoning. WCF >= 6.1.0 until < 6.1.23 and WCF >= 6.2.0 until < 6.2.6. An authenticated low-privileged user can inject PHP into executable cache files generated by WoltLab Suite Core. Attacker-controlled data can terminate the nowdoc prematurely and inject arbitrary PHP Code.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-79362
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-79362
github.com
https://github.com/WoltLab/WCF/commit/c19789dbcc15663c648db1b196b6e6b05265b121
www.woltlab.com
https://www.woltlab.com/community/thread/319263-update-woltlab-suite-6-2-6-6-1-23/
www.woltlab.com
https://www.woltlab.com/community/thread/319264-aktualisierung-woltlab-suite-6-2-6-6-1-23/