High severity8.6NVD Advisory· Published Sep 10, 2026· Updated Sep 29, 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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

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

Renovate: Ten Vulnerabilities Disclosed, Including Command Injection and Credential Exposure
Vypr Intelligence · Sep 10, 2026

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