CVE-2025-23388: Unauthenticated stack overflow in /v3-public/authproviders API

Severity: high (CVSS 8.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-04-11 · updated 2026-06-17
Weakness: CWE-121

Description

A Stack-based Buffer Overflow vulnerability in SUSE rancher allows for denial of service.This issue affects rancher: from 2.8.0 before 2.8.13, from 2.9.0 before 2.9.7, from 2.10.0 before 2.10.3.

Affected products

SUSE Rancher: from 2.8.0 before 2.8.13; from 2.9.0 before 2.9.7; from 2.10.0 before 2.10.3 — fixed in 2.10.3, 2.8.13, 2.9.7

How to fix

Upgrade to a fixed version: SUSE Rancher 2.10.3, 2.8.13, 2.9.7. Check the vendor advisory for mitigations.

References

https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-23388
https://github.com/rancher/rancher/security/advisories/GHSA-xr9q-h9c7-xw8q

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