prompts.chat Username case sensitivity

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

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). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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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
05/27/2026 +54 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: 05/27/2026 05:21
Changes: 04/03/2026 23:22 (76), 04/04/2026 02:37 (1), 05/27/2026 05:21 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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