Renovate before 44.11.2 Credential Exfiltration via Link Header (CVE-2026-88887) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-88887

Renovate before 44.11.2 Credential Exfiltration via Link Header

Answer in brief

CVE-2026-88887 records a Unknown severity vulnerability in Renovate before 44.11.2 Credential Exfiltration via Link Header. The current sources do not mark it as known exploited. The current feed maps renovatebot/renovate (generic), renovatebot/renovate (generic), renovatebot/renovate (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 10, 2026Updated Sep 10, 2026Source checked Sep 10, 2026First seen by HOL Sep 10, 2026Material review Sep 10, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 3 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps renovatebot/renovate (generic), renovatebot/renovate (generic), renovatebot/renovate (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
renovatebot/renovategeneric	>=0 <44.11.2	44.11.2
renovatebot/renovategeneric	>=0 <15.4.0	15.4.0
renovatebot/renovategeneric	>=0 <10.4.0	10.4.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for renovatebot/renovate, renovatebot/renovate, renovatebot/renovate.
Review the reported fix. Update renovatebot/renovate to 44.11.2; renovatebot/renovate to 15.4.0; renovatebot/renovate to 10.4.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 10, 2026

Sources and claim methodology

Upstream source description

Renovate is a dependency update automation tool. When listing tags/digests for a container image, Renovate follows pagination links supplied by the remote registry in the HTTP Link header and attaches the registry credentials to the follow-up request without verifying that the pagination URL has the same origin as the original registry. A malicious or compromised container registry can therefore specify a Link header pointing to an attacker-controlled host and receive the credentials Renovate uses for that registry. Exploitation requires that the target has container (Docker) dependencies and is already interacting with the malicious or compromised registry. This is fixed in Renovate 44.11.2 (npm and renovate/renovate images), Mend Renovate CE/EE 15.4.0 and the mend-renovate-enterprise-edition Helm chart 10.4.0; the same-origin check can be disabled with RENOVATE_X_DOCKER_PAGINATION_ALLOW_CROSS_ORIGIN.

Quoted source text, attributed separately from HOL analysis.