Dashboard / CVE-2026-125063

CVE-2026-125063

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 59/100
Published: 2026-11-09 Modified: 2026-11-10 First seen: 2026-11-09 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Unchanged
C: None
I: None
A: Low

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 Classification (1)

References & Advisories (2)

https://bugzilla.redhat.com/show_bug.cgi?id=2569200
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

59 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

4.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS — Exploitation Probability

0.31%
Raw Score 0.003130
Percentile 24.5%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00313
2026-11-12
0.00313
2026-11-10
0.00313

Intelligence Sources

mitre ref →
nvd ref →

External Links