CVE-2026-22665 prompts.chat Identity Confusion via Case-Sensitive Username Handling
Attackers can impersonate users and modify profile content by exploiting inconsistent case-sensitive username handling in prompts.chat.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-22665?
CVE-2026-22665 is a high-severity authentication bypass vulnerability in f prompts.chat, published on 3 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-178
Which versions are affected by CVE-2026-22665?
It affects 1 product.
Products include Fka Prompts.chat.
How do I fix CVE-2026-22665?
No fix has been published for CVE-2026-22665 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-22665 being exploited?
There is no known exploitation of CVE-2026-22665 in the wild and no public exploit code.
Other vulnerabilities in f prompts.chat
Sources
Also known as GHSA-pcq9-m482-5r7j.