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9.2

Renovate may leak registry credentials to attacker

CVE-2026-88887 · published 1 month ago
Summary

Renovate, the tool that automatically updates software components, can send your container registry login details to a different website if a malicious registry includes a special link in its response. This could let an attacker capture those credentials when you use Renovate with Docker images. Updating to Renovate version 44.11.2 (or the equivalent Mend versions) resolves the issue; otherwise avoid using untrusted registries.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
renovatebot renovate < 44.11.2
< 15.4.0
< 10.4.0
Original advisory text
Renovate before 44.11.2 Credential Exfiltration via Link Header
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.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker partial control
Severity
9.2 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-601Open Redirect
Timeline
Published10 Sep 2026
Updated11 Oct 2026
First seen10 Sep 2026
Sources
CVE-2026-88887 · NVD
CVE-2026-88887 · MITRE
CVE-2026-88887 · OSV
GHSA-v73q-hvqx-hxwx · GHSA
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