Bug 2531440 (CVE-2026-88880)

Summary: CVE-2026-88880 renovate: Renovate before 44.11.3 Credential Exfiltration via Link Header
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: gbenhaim, kaycoth, niyer, twaugh
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Renovate. The application fails to validate Link header destinations when processing GitLab server pagination, which allows malicious servers to redirect requests containing credentials. An attacker controlling a compromised GitLab server can specify a crafted Link header to direct these requests to their own infrastructure, leading to the exfiltration of authentication credentials.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-09-10 13:23:07 UTC
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.