CVE-2026-125063 A flaw was found in the rrule validation of schedules in automation controller.
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-125063?
CVE-2026-125063 is a medium-severity vulnerability in Red Hat Ansible Automation Platform 2, published on 9 Nov 2026.
Official description
A flaw was found in the rrule validation of schedules in automation controller. Several non-anchored regular expressions with lazy wildcard prefixes are applied to the user-supplied rrule value; when the expected DTSTART/RRULE tokens are absent, validation time grows quadratically with the length of the value. An authenticated user can submit a large token-free rrule through the REST API, including the schedule preview endpoint, which requires no resource-level permissions; validation runs synchronously in the API web worker, so a single such request occupies a worker for an extended time and repeated requests can exhaust the web worker pool, denying access to the API and web UI while the attack is sustained. The impact is limited to availability.
Weakness: CWE-1333
Which versions are affected by CVE-2026-125063?
How do I fix CVE-2026-125063?
No fix has been published for CVE-2026-125063 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-125063 being exploited?
There is no known exploitation of CVE-2026-125063 in the wild and no public exploit code.
Sources
Also known as GHSA-269p-w2wm-cfpf.