CVE-2026-55879

CRITICAL

OpenReplay: Unauthenticated stored XSS leads to dashboard account takeover

Title source: cna
STIX 2.1

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 (3)

Core 3

Scores

CVSS v3 9.3
EPSS 0.0029
EPSS Percentile 21.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-79
Status published
Products (1)
openreplay/openreplay >= 1.24.0, < 1.25.0
Published Jul 10, 2026
Tracked Since Jul 11, 2026