CVE-2026-55881

Description

OpenReplay is a self-hosted session replay suite. From 1.22.0 before 1.27.0, getFirstMob returned 15-second presigned S3 download URLs for a session's DOM-replay recording based solely on the session path parameter, while validateProjectAccess checked only that the project belonged to the requester's tenant and did not verify that the session belonged to that project, allowing any authenticated low-privilege user to read another tenant's first 15 seconds of session-replay recording data. This issue is fixed in version 1.27.0.

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Weakness Type (CWE)

CWE-639 CWE-639

References

Other References

https://github.com/openreplay/openreplay/commit/ddd09117f644a309c7b040cda0a11ff9433e9e49 https://github.com/openreplay/openreplay/pull/4692 https://github.com/openreplay/openreplay/releases/tag/v1.27.0 https://github.com/openreplay/openreplay/security/advisories/GHSA-w2x5-m7w5-479h

Frequently Asked Questions

What is CVE-2026-55881? +

OpenReplay is a self-hosted session replay suite. From 1.22.0 before 1.27.0, getFirstMob returned 15-second presigned S3 download URLs for a session's DOM-replay recording based solely on the session path parameter, while validateProjectAccess checked only that the project belonged to the requester's tenant and did not verify that the session belonged to that project, allowing any authenticated low-privilege user to read another tenant's first 15 seconds of session-replay recording data. This issue is fixed in version 1.27.0.

How do I check if I'm vulnerable to CVE-2026-55881? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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