What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-10 · updated 2026-07-13
• Weakness: CWE-79

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

• openreplay: from 1.24.0, < 1.25.0

References

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

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