Open Redirect in Mend Mend-Renovate-Ce
CVE-2026-88887
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.
Vulnerability class: Open Redirect
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/renovatebot/renovate/security/advisories/GHSA-v73q-hvqx-hxwx (vendor-advisory)
- www.vulncheck.com/advisories/renovate-before-44.11.2-credential-exfiltration-vi… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-88887?
- CVE-2026-88887 is a high-severity vulnerability in Mend Mend-Renovate-Ce, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 8.6/10. Published 2026-09-10.
- How severe is CVE-2026-88887?
- High severity. CVSS v3 base score is 8.6 out of 10.