CVE-2026-55252 OpenRun: Redirect URL validation bypass using //host paths leads to Open Redirect
Attackers can bypass redirect URL validation in OpenRun to perform open redirect attacks, potentially tricking users into visiting malicious sites.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-55252?
CVE-2026-55252 is a medium-severity vulnerability in openrundev openrun, published on 1 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
OpenRun is an open-source, self-hosted GitOps platform for deploying web apps and internal tools to Docker or Kubernetes. Prior to version 0.17.7, the restrictions on redirect URLs in openrun can be bypassed by attackers, leading to open redirect attacks. This issue has been patched in version 0.17.7.
Weakness: CWE-601
Which versions are affected by CVE-2026-55252?
3 open source packages ship an affected version, including github.com/openrundev/openrun.
| Package | Affected | Fixed in |
|---|---|---|
github.com/openrundev/openrun Go | All versions | 0.17.7 |
github.com/openrundev/openrun Go | All versions | 0.17.7 |
github.com/openrundev/openrun Go | All versions | 0.17.7 |
How do I fix CVE-2026-55252?
Upgrade github.com/openrundev/openrun to 0.17.7 or later.
Is CVE-2026-55252 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55252 exists.
Sources
Also known as GHSA-h5g6-xmh4-hc37, GO-2026-5956.