Vulnerability · Published Jul 10, 2026 · Assigned by GitHub_M

CVE-2026-55879OpenReplay: Unauthenticated stored XSS leads to dashboard account takeover

Critical 9.3

In plain English

A critical-severity cross-site scripting in openreplay from openreplay. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).

Severity (CVSS 3.1)9.3Critical

Exploit odds (30 days)0.5%top 57.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
openreplay	openreplay	>= 1.24.0, < 1.25.0

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

References

https://github.com/openreplay/openreplay/security/advisories/GHSA-3mfc-7hf4-jfxh x_refsource_CONFIRM
https://github.com/openreplay/openreplay/commit/ec41f4425a99c478a4418adbd2f094ab6a8b0daf x_refsource_MISC
https://github.com/openreplay/openreplay/releases/tag/v1.25.0 x_refsource_MISC