CVE-2026-88880: critical vulnerability in renovatebot renovate
Renovate before 44.11.3 Credential Exfiltration via Link Header
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.2epss 0.5%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Affected products
mend · mend-renovate-cemend · mend-renovate-enterprise-editionmend · renovate-cemend · renovate-ee-servermend · renovate-ee-workerrenovatebot · renovateRelated CVEs — renovatebot renovate
In the same product, most dangerous first.
CVE-2026-88889HIGHRenovate before 44.14.7 Command Injection via distributionTypeEPSS 1.0%CVE-2026-76228HIGHRenovate before 42.68.5 Remote Code Execution via Gradle WrapperEPSS 1.0%CVE-2026-88888HIGHRenovate before 44.14.7 Command Injection via Mix organizationEPSS 0.9%CVE-2026-88885HIGHRenovate before 44.14.7 Command Injection via depNameEPSS 0.9%CVE-2026-88887CRITICALRenovate before 44.11.2 Credential Exfiltration via Link HeaderEPSS 0.4%CVE-2026-88882CRITICALRenovate before 44.11.2 Credential Exfiltration via Link HeaderEPSS 0.4%