CVE-2026-22665 | prompts.chat Username case sensitivity

VDB-355194 · CVE-2026-22665 · EUVD-2026-18829 PROMPTS.CHAT USERNAME CASE SENSITIVITY HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.0 $0-$5k 0.30 Summaryinfo A vulnerability classified as critical was found in prompts.chat. This issue affects some unknown processing of the component Username Handler. The manipulation results in case sensitivity. This vulnerability is cataloged as CVE-2026-22665. The attack may be launched remotely. There is no exploit available. A patch should be applied to remediate this issue. Detailsinfo A vulnerability classified as critical has been found in prompts.chat (version unknown). Affected is an unknown function of the component Username Handler. The manipulation with an unknown input leads to a case sensitivity vulnerability. CWE is classifying the issue as CWE-178. The product does not properly account for differences in case sensitivity when accessing or determining the properties of a resource, leading to inconsistent results. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes: 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 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. The weakness was shared by mdisec. The advisory is available at github.com. This vulnerability is traded as CVE-2026-22665 since 01/08/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The technical details are unknown and an exploit is not available. Applying the patch 1464475df2698fb7ccd0cdbc382b0750466f891d is able to eliminate this problem. The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-18829). Productinfo Type Chat Software Name prompts.chat CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 7.2 VulDB Meta Temp Score: 7.0 VulDB Base Score: 6.3 VulDB Temp Score: 6.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 8.1 CNA Vector (VulnCheck): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Case sensitivity CWE: CWE-178 / CWE-697 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Patch Status: 🔍 0-Day Time: 🔒 Patch: 1464475df2698fb7ccd0cdbc382b0750466f891d Timelineinfo 01/08/2026 CVE reserved 04/03/2026 +84 days Advisory disclosed 04/03/2026 +0 days VulDB entry created 04/04/2026 +1 days VulDB entry last update Sourcesinfo Advisory: github.com Researcher: mdisec Status: Confirmed CVE: CVE-2026-22665 (🔒) GCVE (CVE): GCVE-0-2026-22665 GCVE (VulDB): GCVE-100-355194 EUVD: 🔒 Entryinfo Created: 04/03/2026 23:22 Updated: 04/04/2026 02:37 Changes: 04/03/2026 23:22 (76), 04/04/2026 02:37 (1) Complete: 🔍 Cache ID: 99:D50:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸