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TI-2026-60374 Aliases CVE-2026-89093GHSA-53vp-fjc5-cqj6

Better Messages <= 2.15.33 - Unauthenticated Information Exposure Spoofing via 'X-Real-IP' Header via /guests/register

Priority LOW 30CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

The Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots plugin for WordPress is vulnerable to Information Exposure by Spoofing in all versions up to, and including, 2.15.33. This is due to the `is_ai_bot_user()` function identifying privileged internal AI bot accounts by performing a prefix check for `'ai-chat-bot-'` against a guest record's stored IP address, which is populated verbatim from the client-controlled `X-Real-IP` request header during unauthenticated guest registration. This makes it possible for unauthenticated attackers to register a guest identity that the plugin treats as its own internal AI bot, bypassing the per-room role allowlist, draft-status check, and join filters — which are all short-circuited by the bot check in `user_can_join()` and `user_can_read()` — to join administrator-restricted chat rooms, post messages into them, and read the private message history of other users.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00325 25th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
wordplusBetter Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Botsup to 2.15.33—No fix listedCNA
  • Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots Vendorwordplus Affected up to 2.15.33 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-89093
  2. 2026-10-03 Alias added: GHSA-53vp-fjc5-cqj6

References

Other 9

  • TI-2024-12652 Information disclosure in wordplus Better Messages – Live Chat, Chat Rooms, Real-Time… CVSS 3.1HIGH 7.5
  • TI-2022-20012 WordPress Better Messages plugin <= 1.9.10.68 - Server-Side Request Forgery (SSRF) vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-07091 BP Better Messages < 1.9.9.41 - Multiple CSRF CVSS 3.1HIGH 8.8
  • TI-2026-30959 WordPress BP Better Messages plugin <= 2.14.16 - Insecure Direct Object References (IDOR) vulnerability CVSS 3.1HIGH 7.5
  • TI-2022-16728 WordPress Better Messages plugin <= 1.9.9.148 - Cross-Site Request Forgery (CSRF) vulnerability CVSS 3.1HIGH 8.8
  • TI-2026-13837 Path traversal in wordplus Better Messages – Chat Rooms, Group Chat, Private Messages &… CVSS 3.1HIGH 7.2
See all 24 →

Sources

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