{"id":"CVE-2026-22665","title":"prompts.chat prior to commit 1464475, contains an identity confusion vulnerability due to inconsistent case-sensitive and case-insensitive handling of usernames across write and read paths, allowing attackers to create case-variant usern…","summary":"prompts.chat prior to commit 1464475, contains an identity confusion vulnerability due to inconsistent case-sensitive and case-insensitive handling of usernames across write and read paths, allowing attackers to create case-variant usern…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","cwe":["CWE-178"],"vendor":"fka","product":"prompts.chat","affected":["prompts.chat < 2026-03-24"],"patched":["prompts.chat 2026-03-24"],"published":"2026-04-03","updated":"2026-07-24","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-22665","references":[{"url":"https://github.com/f/prompts.chat/commit/1464475df2698fb7ccd0cdbc382b0750466f891d","label":"disclosure@vulncheck.com"},{"url":"https://github.com/f/prompts.chat/pull/1098","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/prompts-chat-identity-confusion-via-case-sensitive-username-handling","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00332,"epssPercentile":0.2652,"ingestedAt":"2026-07-25T22:05:04.748Z","slug":"CVE-2026-22665","body":"## Overview\n\nprompts.chat prior to commit 1464475, contains an identity confusion vulnerability due to inconsistent case-sensitive and case-insensitive handling of usernames across write and read paths, allowing attackers to create case-variant usernames that bypass uniqueness checks. Attackers can exploit non-deterministic username resolution to impersonate victim accounts, replace profile content on canonical URLs, and inject attacker-controlled metadata and content across the platform.\n\n## Affected\n\n- `prompts.chat < 2026-03-24`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `prompts.chat 2026-03-24`","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}