{"id":"CVE-2026-118129","published":"2026-10-28T00:17:11.520","lastModified":"2026-10-28T00:17:11.520","description":"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.","cvssScore":6.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","cwes":["CWE-287"],"vendors":[],"products":[],"references":[{"url":"https://github.com/0xGenesi/CVE/blob/main/Chitchatter_SDK_postMessage_Identity_Key_Injection.md","tags":[]},{"url":"https://github.com/jeremyckahn/chitchatter/","tags":[]},{"url":"https://github.com/jeremyckahn/chitchatter/commit/e3babb5cd83bfe3b99f1d82358ac5c1ea8e8a688","tags":[]},{"url":"https://github.com/jeremyckahn/chitchatter/pull/635","tags":[]},{"url":"https://vuldb.com/cve/CVE-2026-118129","tags":[]},{"url":"https://vuldb.com/submit/1015027","tags":[]},{"url":"https://vuldb.com/vuln/427456","tags":[]},{"url":"https://vuldb.com/vuln/427456/cti","tags":[]}],"exploitRefs":[{"url":"https://github.com/0xGenesi/CVE/blob/main/Chitchatter_SDK_postMessage_Identity_Key_Injection.md","tags":[]},{"url":"https://github.com/jeremyckahn/chitchatter/","tags":[]},{"url":"https://github.com/jeremyckahn/chitchatter/commit/e3babb5cd83bfe3b99f1d82358ac5c1ea8e8a688","tags":[]},{"url":"https://github.com/jeremyckahn/chitchatter/pull/635","tags":[]}],"hasPoc":true,"ai":null}