CVE-2026-88880

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-88880", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-09-10T11:25:34.912Z", "datePublished": "2026-09-10T13:05:31.574Z", "dateUpdated": "2026-09-29T22:10:37.093Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-09-29T22:10:37.093Z"}, "datePublic": "2026-08-27T00:00:00.000Z", "title": "Renovate before 44.11.3 Credential Exfiltration via Link Header", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "URL Redirection to Untrusted Site ('Open Redirect')", "cweId": "CWE-601", "type": "CWE"}]}], "affected": [{"vendor": "renovatebot", "product": "renovate", "defaultStatus": "unaffected", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "44.11.3"}, {"version": "44.11.3", "status": "unaffected", "versionType": "semver"}]}, {"vendor": "mend", "product": "renovate-ce", "defaultStatus": "unaffected", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "15.4.0"}, {"version": "15.4.0", "status": "unaffected", "versionType": "semver"}]}, {"vendor": "mend", "product": "renovate-ee-server", "defaultStatus": "unaffected", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "15.4.0"}, {"version": "15.4.0", "status": "unaffected", "versionType": "semver"}]}, {"vendor": "mend", "product": "renovate-ee-worker", "defaultStatus": "unaffected", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "15.4.0"}, {"version": "15.4.0", "status": "unaffected", "versionType": "semver"}]}, {"vendor": "mend", "product": "mend-renovate-ce", "defaultStatus": "unaffected", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "15.4.0"}, {"version": "15.4.0", "status": "unaffected", "versionType": "semver"}]}, {"vendor": "mend", "product": "mend-renovate-enterprise-edition", "defaultStatus": "unaffected", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "10.4.0"}, {"version": "10.4.0", "status": "unaffected", "versionType": "semver"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "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", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 9.2, "baseSeverity": "CRITICAL"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/renovatebot/renovate/security/advisories/GHSA-9hmg-9h89-jhmx", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-9hmg-9h89-jhmx)"}, {"name": "VulnCheck Advisory: Renovate before 44.11.3 Credential Exfiltration via Link Header", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/renovate-before-44.11.3-credential-exfiltration-via-link-header"}], "credits": [{"lang": "en", "value": "jamietanna", "type": "reporter"}], "x_generator": {"engine": "vulncheck-endgame"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-88880", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-18T17:11:40.160815Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-18T17:23:07.727Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-88880", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-18T17:11:40.160815Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-18T17:17:25.726Z"}}], "cna": {"title": "Renovate before 44.11.3 Credential Exfiltration via Link Header", "credits": [{"lang": "en", "type": "reporter", "value": "jamietanna"}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "baseScore": 9.2, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "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", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.6, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "renovatebot", "product": "renovate", "versions": [{"status": "affected", "version": "0", "lessThan": "44.11.3", "versionType": "semver"}, {"status": "unaffected", "version": "44.11.3", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "mend", "product": "renovate-ce", "versions": [{"status": "affected", "version": "0", "lessThan": "15.4.0", "versionType": "semver"}, {"status": "unaffected", "version": "15.4.0", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "mend", "product": "renovate-ee-server", "versions": [{"status": "affected", "version": "0", "lessThan": "15.4.0", "versionType": "semver"}, {"status": "unaffected", "version": "15.4.0", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "mend", "product": "renovate-ee-worker", "versions": [{"status": "affected", "version": "0", "lessThan": "15.4.0", "versionType": "semver"}, {"status": "unaffected", "version": "15.4.0", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "mend", "product": "mend-renovate-ce", "versions": [{"status": "affected", "version": "0", "lessThan": "15.4.0", "versionType": "semver"}, {"status": "unaffected", "version": "15.4.0", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "mend", "product": "mend-renovate-enterprise-edition", "versions": [{"status": "affected", "version": "0", "lessThan": "10.4.0", "versionType": "semver"}, {"status": "unaffected", "version": "10.4.0", "versionType": "semver"}], "defaultStatus": "unaffected"}], "datePublic": "2026-08-27T00:00:00.000Z", "references": [{"url": "https://github.com/renovatebot/renovate/security/advisories/GHSA-9hmg-9h89-jhmx", "name": "GitHub Security Advisory (GHSA-9hmg-9h89-jhmx)", "tags": ["vendor-advisory"]}, {"url": "https://www.vulncheck.com/advisories/renovate-before-44.11.3-credential-exfiltration-via-link-header", "name": "VulnCheck Advisory: Renovate before 44.11.3 Credential Exfiltration via Link Header", "tags": ["third-party-advisory"]}], "x_generator": {"engine": "vulncheck-endgame"}, "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-601", "description": "URL Redirection to Untrusted Site ('Open Redirect')"}]}], "providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-09-29T22:10:37.093Z"}}}, "cveMetadata": {"cveId": "CVE-2026-88880", "state": "PUBLISHED", "dateUpdated": "2026-09-29T22:10:37.093Z", "dateReserved": "2026-09-10T11:25:34.912Z", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "datePublished": "2026-09-10T13:05:31.574Z", "assignerShortName": "VulnCheck"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "renovate", "vendor": "renovatebot", "versions": [{"lessThan": "44.11.3", "status": "affected", "version": "0", "versionType": "semver"}, {"status": "unaffected", "version": "44.11.3", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "renovate-ce", "vendor": "mend", "versions": [{"lessThan": "15.4.0", "status": "affected", "version": "0", "versionType": "semver"}, {"status": "unaffected", "version": "15.4.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "renovate-ee-server", "vendor": "mend", "versions": [{"lessThan": "15.4.0", "status": "affected", "version": "0", "versionType": "semver"}, {"status": "unaffected", "version": "15.4.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "renovate-ee-worker", "vendor": "mend", "versions": [{"lessThan": "15.4.0", "status": "affected", "version": "0", "versionType": "semver"}, {"status": "unaffected", "version": "15.4.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "mend-renovate-ce", "vendor": "mend", "versions": [{"lessThan": "15.4.0", "status": "affected", "version": "0", "versionType": "semver"}, {"status": "unaffected", "version": "15.4.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "mend-renovate-enterprise-edition", "vendor": "mend", "versions": [{"lessThan": "10.4.0", "status": "affected", "version": "0", "versionType": "semver"}, {"status": "unaffected", "version": "10.4.0", "versionType": "semver"}]}], "source": "disclosure@vulncheck.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-88880", "lastModified": "2026-09-29T23:17:23.310", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.0, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.2, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-88880", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-18T17:11:40.160815Z", "version": "2.0.3"}}]}, "published": "2026-09-10T14:17:16.480", "references": [{"source": "disclosure@vulncheck.com", "url": "https://github.com/renovatebot/renovate/security/advisories/GHSA-9hmg-9h89-jhmx"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/renovate-before-44.11.3-credential-exfiltration-via-link-header"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-601"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,44.11.3)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "44.11.3"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "renovate", "source": "cna", "vendor": "renovatebot"}, "product": "renovate", "vendor": "renovatebot"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,15.4.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "15.4.0"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "renovate", "source": "cna", "vendor": "renovatebot"}, "product": "renovate", "vendor": "renovatebot"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,10.4.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "10.4.0"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "renovate", "source": "cna", "vendor": "renovatebot"}, "product": "renovate", "vendor": "renovatebot"}], "created": "2026-09-10T15:00:15.480156+00:00", "updated": "2026-09-11T19:15:14.649022+00:00", "vendors": ["renovatebot", "renovatebot$PRODUCT$renovate"]}