CVE-2026-22905 Authentication Bypass via URI Traversal
Unauthenticated attackers can bypass authentication via URI traversal to access protected CGI endpoints and download configuration data on WAGO devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-22905?
CVE-2026-22905 is a high-severity authentication bypass vulnerability in WAGO 0852-1322, published on 9 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An unauthenticated remote attacker can bypass authentication by exploiting insufficient URI validation and using path traversal sequences (e.g., /js/../cgi-bin/post.cgi), gaining unauthorized access to protected CGI endpoints and configuration downloads.
Weakness: CWE-22
Which versions are affected by CVE-2026-22905?
How do I fix CVE-2026-22905?
No fix has been published for CVE-2026-22905 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-22905 being exploited?
There is no known exploitation of CVE-2026-22905 in the wild and no public exploit code.
Sources
Also known as GHSA-q9j9-8wv2-gff4.