CVE Catalog

CVE-2026-118129

MediumCVSS 6.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.34%

28th percentile - higher than 28% of all known CVEs

Summary

A vulnerability was found in jeremyckahn Chitchatter up to f82538633813c854a81a8b2112a2f6ba17b39cbc in the isConfigMessageEvent function of src/Bootstrap.tsx within the PostMessage Handler component. Manipulating the parentDomain argument results in improper authentication, and the exploit has been made public and could be used. The patch is named e3babb5cd83bfe3b99f1d82358ac5c1ea8e8a688.

Risk Assessment

A remote attacker can use the publicly known exploit to bypass authentication in PostMessage handling. Because the product follows a rolling release model, organizations must verify themselves whether they run an affected version.

Recommendation

Apply patch e3babb5cd83bfe3b99f1d82358ac5c1ea8e8a688 or update to the latest Chitchatter release. Verify that the deployed version includes this fix.

Related vulnerabilities

Original NVD description (English source)

A vulnerability was found in jeremyckahn Chitchatter up to f82538633813c854a81a8b2112a2f6ba17b39cbc. The affected element is the function isConfigMessageEvent of the file src/Bootstrap.tsx of the component PostMessage Handler. Performing a manipulation of the argument parentDomain results in improper authentication. Remote exploitation of the attack is possible. The exploit has been made public and could be used. This product follows a rolling release approach for continuous delivery, so version details for affected or updated releases are not provided. The patch is named e3babb5cd83bfe3b99f1d82358ac5c1ea8e8a688. It is recommended to apply a patch to fix this issue. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS