Renovate before 44.11.3 Credential Exfiltration via Link Header

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-88881
StatePUBLISHED
AssignerVulnCheck
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-10 14:17:16 UTC
Updated2026-09-10 14:50:07 UTC
DescriptionRenovate, a dependency update tool, follows pagination links supplied by the GitHub server in the HTTP `Link` header when interacting with GitHub.com, GitHub Enterprise Cloud, or GitHub Enterprise Server, and sends the credentials configured for that host to the URL given as the 'next' page. Because the pagination URL is not validated against the host originally contacted, a malicious or compromised GitHub server can return a `Link` header pointing to an attacker-controlled host and cause Renovate to disclose those credentials to it. Exploitation requires that the GitHub server Renovate talks to (as the repository host or as a datasource such as github-releases, github-tags, or git-refs) is already malicious or compromised. The issue is fixed in renovate 44.11.3 (npm and renovate/renovate container images), Mend Renovate CE/EE images and the mend-renovate-ce helm chart 15.4.0, and the mend-renovate-enterprise-edition helm chart 10.4.0. There is no workaround; the pre-existing RENOVATE_X_REBASE_PAGINATION_LINKS option disables the new host check and should only be used with servers that intentionally use different pagination hosts.

Risk And Classification

Primary CVSS: v4.0 9.2 CRITICAL from [email protected]

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

Problem Types: CWE-601 | CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary9.2CRITICALCVSS: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/C...
4.0CNACVSS9.2CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
3.1[email protected]Primary8.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
3.1CNACVSS8.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
None
Availability
None
Sub Conf.
High
Sub Integrity
None
Sub Availability
None

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

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Renovatebot Renovate affected 44.11.3 semver Not specified
CNA Renovatebot Renovate unaffected 44.11.3 semver Not specified
CNA Renovatebot Renovate affected 44.11.3 semver Not specified
CNA Renovatebot Renovate unaffected 44.11.3 semver Not specified
CNA Renovatebot Renovate affected 44.11.3 semver Not specified
CNA Renovatebot Renovate unaffected 44.11.3 semver Not specified
CNA Renovatebot Renovate affected 44.11.3 semver Not specified
CNA Renovatebot Renovate unaffected 44.11.3 semver Not specified
CNA Renovatebot Renovate affected 15.4.0 semver Not specified
CNA Renovatebot Renovate unaffected 15.4.0 semver Not specified
CNA Renovatebot Renovate affected 15.4.0 semver Not specified
CNA Renovatebot Renovate unaffected 15.4.0 semver Not specified
CNA Renovatebot Renovate affected 15.4.0 semver Not specified
CNA Renovatebot Renovate unaffected 15.4.0 semver Not specified
CNA Renovatebot Renovate affected 15.4.0 semver Not specified
CNA Renovatebot Renovate unaffected 15.4.0 semver Not specified
CNA Renovatebot Renovate affected 15.4.0 semver Not specified
CNA Renovatebot Renovate unaffected 15.4.0 semver Not specified
CNA Renovatebot Renovate affected 15.4.0 semver Not specified
CNA Renovatebot Renovate unaffected 15.4.0 semver Not specified
CNA Renovatebot Renovate affected 15.4.0 semver Not specified
CNA Renovatebot Renovate unaffected 15.4.0 semver Not specified
CNA Renovatebot Renovate affected 15.4.0 semver Not specified
CNA Renovatebot Renovate unaffected 15.4.0 semver Not specified
CNA Renovatebot Renovate affected 15.4.0 semver Not specified
CNA Renovatebot Renovate unaffected 15.4.0 semver Not specified
CNA Renovatebot Renovate affected 15.4.0 semver Not specified
CNA Renovatebot Renovate unaffected 15.4.0 semver Not specified
CNA Renovatebot Renovate affected 15.4.0 semver Not specified
CNA Renovatebot Renovate unaffected 15.4.0 semver Not specified
CNA Renovatebot Renovate affected 10.4.0 semver Not specified
CNA Renovatebot Renovate unaffected 10.4.0 semver Not specified
CNA Renovatebot Renovate affected 10.4.0 semver Not specified
CNA Renovatebot Renovate unaffected 10.4.0 semver Not specified

References

ReferenceSourceLinkTags
www.vulncheck.com/advisories/renovate-before-44.11.3-credential-exfiltration-vi... [email protected] www.vulncheck.com
github.com/renovatebot/renovate/security/advisories/GHSA-w57v-h33h-835c [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: jamietanna (en)

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