{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","favicon":"https://feed.craftedsignal.io/favicon-32x32.png","feed_url":"https://feed.craftedsignal.io/cpes/cpe2.3ajeremyckahnchitchatter/feed.json","home_page_url":"https://feed.craftedsignal.io/","icon":"https://feed.craftedsignal.io/apple-touch-icon.png","items":[{"_cs_actors":[],"_cs_cpes":["cpe:2.3:a:jeremyckahn:chitchatter:*:*:*:*:*:*:*:*"],"_cs_cves":[{"cvss":6.3,"id":"CVE-2026-118129"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Chitchatter (\u003c= f82538633813c854a81a8b2112a2f6ba17b39cbc)"],"_cs_severities":["low"],"_cs_tags":["vulnerability","web-application","authentication-bypass"],"_cs_type":"advisory","_cs_vendors":["jeremyckahn"],"content_html":"\u003cp\u003eA remote improper authentication vulnerability exists in the Chitchatter application, specifically within the isConfigMessageEvent function in src/Bootstrap.tsx. The vulnerability allows an attacker to manipulate the parentDomain argument within the PostMessage Handler. Public proof-of-concept exploit code is available. The vulnerability affects versions of Chitchatter up to commit f82538633813c854a81a8b2112a2f6ba17b39cbc. A fix has been released in commit e3babb5cd83bfe3b99f1d82358ac5c1ea8e8a688.\u003c/p\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation allows remote attackers to bypass authentication mechanisms within the Chitchatter application via the PostMessage interface.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIdentify all instances of Chitchatter in the environment.\u003c/li\u003e\n\u003cli\u003eApply the patch provided in commit e3babb5cd83bfe3b99f1d82358ac5c1ea8e8a688 immediately.\u003c/li\u003e\n\u003cli\u003eMonitor for anomalous postMessage activity originating from untrusted domains targeting the Chitchatter interface.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-10-28T01:35:54Z","date_published":"2026-10-28T01:35:54Z","id":"https://feed.craftedsignal.io/briefs/2026-10-chitchatter-auth-bypass/","summary":"CVE-2026-118129 is an authentication bypass vulnerability in the Chitchatter PostMessage Handler allowing remote attackers to manipulate the parentDomain argument to perform improper authentication.","title":"Chitchatter: PostMessage Handler improper authentication (CVE-2026-118129)","url":"https://feed.craftedsignal.io/briefs/2026-10-chitchatter-auth-bypass/"}],"language":"en","title":"CraftedSignal Threat Feed - Cpe:2.3:a:jeremyckahn:chitchatter:*:*:*:*:*:*:*:*","version":"https://jsonfeed.org/version/1.1"}