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TI-2026-18200 Aliases CVE-2026-22665GHSA-pcq9-m482-5r7j

prompts.chat Identity Confusion via Case-Sensitive Username Handling

Priority LOW 39CWE-178Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

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 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00338 27th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

No affected products listed by the sources yet.

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:fka:prompts.chat:*:*:*:*:*:*:*:*before 2026-03-24Vulnerablef
  • cpe:2.3:a:fka:prompts.chat:*:*:*:*:*:*:*:* Versions before 2026-03-24 Vulnerable ·f

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-22665
  2. 2026-10-03 Alias added: GHSA-pcq9-m482-5r7j

References

Exploit 1

Patch 1

  • TI-2026-18196 prompts.chat Path Traversal via Skill File Handling CVSS 4.0HIGH 8.6
  • TI-2026-18199 prompts.chat SSRF via Fal.ai Media Status Polling CVSS 4.0HIGH 7.1
  • TI-2026-18198 prompts.chat Authorization Bypass Information Disclosure CVSS 4.0HIGH 8.7
  • TI-2026-18197 prompts.chat Blind SSRF via media-generate CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences