by Kastro
Paper/Archive/CVE-2026-55879

CVE-2026-55879

openreplay openreplay — OpenReplay: Unauthenticated stored XSS leads to dashboard account takeover

EPSS 0.5%CVSS 9.3
critical.is priorityof 100
37
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 42.8.428 × 208.6No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
openreplay>= 1.24.0, < 1.25.0–CNA

Scores by source

GitHub_M (CNA)9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/openreplay/openreplay/security/advisories/GHSA-3mfc-7hf4-jfxhrefgithub.com/openreplay/openreplay/commit/ec41f4425a99c478a4418adbd2f094ab6a8b0dafrefgithub.com/openreplay/openreplay/releases/tag/v1.25.0