---
id: CVE-2026-55879
title: OpenReplay is a self-hosted session replay suite
summary: >-
  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
  out…
severity: critical
cvss: 9.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N'
cwe:
  - CWE-79
published: '2026-07-10'
updated: '2026-07-10'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-55879'
references:
  - url: >-
      https://github.com/openreplay/openreplay/commit/ec41f4425a99c478a4418adbd2f094ab6a8b0daf
    label: security-advisories@github.com
  - url: 'https://github.com/openreplay/openreplay/releases/tag/v1.25.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/openreplay/openreplay/security/advisories/GHSA-3mfc-7hf4-jfxh
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00499
epssPercentile: 0.41828
ingestedAt: '2026-07-11T20:15:26.967Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.