OpenReplay up to 1.24.0 Tracking SDK encoding error

Summaryinfo

A vulnerability was found in OpenReplay up to 1.24.0. It has been rated as critical. This affects an unknown part of the component Tracking SDK. Performing a manipulation results in encoding error. This vulnerability was named CVE-2026-55879. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, was found in OpenReplay up to 1.24.0. This affects an unknown function of the component Tracking SDK. The manipulation with an unknown input leads to a encoding error vulnerability. CWE is classifying the issue as CWE-172. The product does not properly encode or decode the data, resulting in unexpected values. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-55879 since 06/17/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 1.25.0 eliminates this vulnerability.

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Productinfo

Name

• OpenReplay

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24.0

Website

• Product: https://github.com/openreplay/openreplay/

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CPE 2.2info

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