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Description

OpenReplay is a self-hosted session replay suite. From 1.24.0 before 1.25.0, the OpenReplay tracking SDK accepts custom event names and captured page URLs from any visitor using a public project key, stores them in ClickHouse without output encoding, and later renders them in the authenticated dashboard through TextEllipsis and the event-details modal, allowing an unauthenticated attacker to store script that executes in the dashboard origin, reads the session JWT from localStorage, and takes over a dashboard account. This issue is fixed in version 1.25.0.

PUBLISHED Reserved 2026-06-17 | Published 2026-07-10 | Updated 2026-07-13 | Assigner GitHub_M




CRITICAL: 9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

>= 1.24.0, < 1.25.0
affected

References

github.com/...replay/security/advisories/GHSA-3mfc-7hf4-jfxh

github.com/...ommit/ec41f4425a99c478a4418adbd2f094ab6a8b0daf

github.com/openreplay/openreplay/releases/tag/v1.25.0

cve.org (CVE-2026-55879)

nvd.nist.gov (CVE-2026-55879)

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