CVE-2026-22665

HIGH
MEDIUM Priority: 0.03 BB Relevance: 67/100
Published: 2026-04-03 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
AT: None
VC: High
VI: High
VA: None

Description

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.

Affected Software (1)

VendorProductVersion
f prompts.chat 0 < 1464475df2698fb7ccd0cdbc382b0750466f891d

Bug Bounty Relevance

67 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

8.6 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.34%
Raw Score 0.003380
Percentile 27.6%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00338
2026-11-12
0.00338
2026-11-10
0.00338
2026-11-09
0.00338
2026-11-08
0.00338

Intelligence Sources

mitre ref →