CVE-2026-55252 openrundev CVE debrief

Who should care

Defenders responsible for OpenRun deployments should assess exposure and prioritize upgrading to version 0.17.7 or later to prevent potential open redirect attacks. This includes verifying OpenRun deployments for exposure to untrusted redirect URLs and monitoring for potential open redirect attacks. Security teams should review compensating controls for exposed systems while remediation is scheduled and verified.

Why it matters

Defenders should prioritize verifying exposure of OpenRun deployments and upgrading to version 0.17.7 or later to prevent potential open redirect attacks.

• Potential open redirect attacks against unauthenticated users
• Verification of OpenRun deployment exposure to untrusted redirect URLs

Technical summary

OpenRun, a self-hosted GitOps platform, has a vulnerability in versions prior to 0.17.7 that allows attackers to bypass redirect URL restrictions using //host paths, leading to open redirect attacks. The vulnerability is caused by insufficient validation of redirect URLs, which can be exploited by attackers to redirect users to malicious sites. This issue has been patched in version 0.17.7. Defenders should prioritize verifying exposure of OpenRun deployments and upgrading to version 0.17.7 or later to prevent potential open redirect attacks.

Defensive priority

Defenders should prioritize verifying exposure of OpenRun deployments and upgrading to version 0.17.7 or later.

Recommended defensive actions

• Verify OpenRun deployments for exposure to untrusted redirect URLs
• Upgrade OpenRun to version 0.17.7 or later
• Monitor for potential open redirect attacks
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the vulnerability and its patch. However, additional information on potential exploitation or impact is limited. Defenders should verify OpenRun deployments for exposure to untrusted redirect URLs and monitor for potential open redirect attacks. The CVE record was published on 2026-10-01T19:52:31.031Z and has not been modified since then.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.