CVE-2026-55879

critical

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.

References

https://github.com/openreplay/openreplay/security/advisories/GHSA-3mfc-7hf4-jfxh

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

https://github.com/openreplay/openreplay/commit/ec41f4425a99c478a4418adbd2f094ab6a8b0daf

Details

Source: Mitre, NVD

Published: 2026-07-10

Updated: 2026-07-10

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 9.3

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

Severity: Critical