High severity8.6NVD Advisory· Published Sep 10, 2026· Updated Sep 10, 2026

CVE-2026-88880

Description

Renovate before 44.11.3 fails to validate Link header destinations when following GitLab server pagination, allowing malicious servers to redirect credential-bearing requests. Attackers controlling a compromised GitLab server can specify a Link header pointing to attacker-controlled infrastructure to exfiltrate authentication credentials.

Affected products

Renovatebot/Renovatellm-fuzzy
Range: <44.11.3

Patches

Vulnerability mechanics

References

github.com/renovatebot/renovate/security/advisories/GHSA-9hmg-9h89-jhmxnvd
www.vulncheck.com/advisories/renovate-before-44.11.3-credential-exfiltration-via-link-headernvd

News mentions

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cvss	0.559
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000