{"id":"CVE-2026-88880","aliases":["EUVD-2026-75430","GHSA-9hmg-9h89-jhmx","GHSA-wqcg-39wp-gpqc"],"status":"published","title":"Renovate before 44.11.3 Credential Exfiltration via Link Header","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.","severity":{"version":"4.0","score":9.2,"vector":"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","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00504,"percentile":0.43549,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-601"],"published":"2026-09-10T13:05:31Z","modified":"2026-10-28T02:31:05Z","products":[{"vendor":"mend","product":"mend-renovate-ce"},{"vendor":"mend","product":"mend-renovate-enterprise-edition"},{"vendor":"mend","product":"renovate-ce"},{"vendor":"mend","product":"renovate-ee-server"},{"vendor":"mend","product":"renovate-ee-worker"},{"vendor":"renovatebot","product":"renovate"}],"references":[{"url":"https://github.com/renovatebot/renovate/security/advisories/GHSA-9hmg-9h89-jhmx","tags":["vendor-advisory","advisory"]},{"url":"https://www.vulncheck.com/advisories/renovate-before-44.11.3-credential-exfiltration-via-link-header","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88880","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-wqcg-39wp-gpqc"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88880.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-88880","title":"Renovate before 44.11.3 Credential Exfiltration via Link Header","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.","status":"published","published":"2026-09-10T13:05:31.574Z","modified":"2026-09-29T22:10:37.093Z","cvss":[{"version":"4.0","score":9.2,"vector":"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","level":"critical","assessor":"cna"},{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T13:41:53.237769Z"}],"euvd":[{"id":"EUVD-2026-75430","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.","status":"published","published":"2026-09-10T13:05:31Z","modified":"2026-09-29T22:10:37Z","cvss":[{"version":"4.0","score":9.2,"vector":"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","level":"critical"}],"updated_at":"2026-11-02T17:27:50.63586Z"}],"ghsa":[{"id":"GHSA-wqcg-39wp-gpqc","title":"Renovate before 44.11.3 fails to validate Link header destinations when following GitLab server...","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.","status":"published","published":"2026-09-10T15:33:18Z","modified":"2026-09-10T15:33:18Z","cvss":[{"version":"4.0","score":9.2,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"},{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T15:11:41.43854Z"}],"nvd":[{"id":"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.","status":"published","published":"2026-09-10T14:17:16.48Z","modified":"2026-09-29T23:17:23.31Z","cvss":[{"version":"4.0","score":9.2,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"},{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:12:45.93749Z"}],"osv":[{"id":"CVE-2026-88880","title":"Renovate before 44.11.3 Credential Exfiltration via Link Header","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.","status":"published","published":"2026-09-10T13:05:31.574Z","modified":"2026-10-28T02:31:05.856574378Z","cvss":[{"version":"4.0","score":9.2,"vector":"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","level":"critical"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T15:45:19.210277Z"}]}}