CVE-2026-44937 PUBLISHED

SUSE Rancher Fleet had an Unauthenticated Webhook: Regex Injection via Unsanitized Repository URL Components

Assigner: suse
Reserved: 08.05.2026 Published: 06.07.2026 Updated: 06.07.2026

Potential forgery of webhook requests when using a unauthenticated webhook in SUSE Rancher Fleet 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.5 could be used by remote attackers to cause a denial of service or a downgrade attack on other repositories on the system.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	High	Integrity	Low	Integrity	None
Attack Requirements	Present	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	SUSE
Product	Rancher
Versions	Default: unaffected affected from 0.15.0 to 0.15.2 (excl.) affected from 0.14.0 to 0.14.6 (excl.) affected from 0.13.0 to 0.13.11 (excl.) affected from 0.12.0 to 0.12.15 (excl.)

References

https://github.com/rancher/fleet/security/advisories/GHSA-jmf4-m7j9-g72r

Problem Types

CWE-918 Server-Side request forgery (SSRF) CWE

Impacts

CAPEC-122 Privilege Abuse