CVE-2026-110865 Renovate before 44.60.1 HTTP Header Allowlist Bypass via Shared Presets
Attackers can bypass HTTP header allowlists in Renovate by injecting custom headers via shared presets, potentially exposing internal data or bypassing security controls.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-110865?
CVE-2026-110865 is a high-severity vulnerability in mend-renovate-ce helm chart, published on 14 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Renovate before 44.60.1 contains an allowlist bypass vulnerability that allows repository users to evade the allowedHeaders restriction by placing hostRules headers inside shared presets. Attackers can supply internal or externally sourced presets with unvalidated hostRules[].headers to inject custom HTTP headers into requests Renovate sends to other hosts.
Weakness: CWE-424
Which versions are affected by CVE-2026-110865?
How do I fix CVE-2026-110865?
No fix has been published for CVE-2026-110865 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-110865 being exploited?
There is no known exploitation of CVE-2026-110865 in the wild and no public exploit code.
Sources
Also known as GHSA-6f4x-rc8m-8j8g, GHSA-6j6f-fh7w-vvjr.