CVE-2026-11956 TwiN gatus OIDC Session Cookie oidc.go setSessionCookie missing secure attribute
Attackers can intercept sensitive OIDC session cookies due to missing secure attributes, potentially leading to session hijacking.
- 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-2026-11956?
CVE-2026-11956 is a medium-severity vulnerability in TwiN gatus, published on 11 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was determined in TwiN gatus 5.36.0. Impacted is the function setSessionCookie of the file security/oidc.go of the component OIDC Session Cookie Handler. Executing a manipulation can lead to sensitive cookie without secure attribute. The attack can be launched remotely. This attack is characterized by high complexity. The exploitability is considered difficult. The reported GitHub issue was closed with the label "not planned".
Which versions are affected by CVE-2026-11956?
How do I fix CVE-2026-11956?
No fix has been published for CVE-2026-11956 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-11956 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-11956 exists.
Sources
Also known as GHSA-wwqf-6p54-3cfq.