TI-2026-82406 Aliases CVE-2026-119048 GHSA-p9w4-jq2c-hfxp

JeeSite IDOR in AI CMS Chat Module Exposes Other Users' Conversations

LOW 12CWE-639Published 2026-10-29 · Updated 2026-10-29

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

JeeSite 5.11.0 through 5.19.1 contains an insecure direct object reference in the AI CMS chat module. Missing and reversed ownership checks let an authenticated user access other users' conversations, using a conversation id they know or derive. An attacker can read, delete, or append to a victim's AI chat transcripts, and CWE-639 describes the authorization bypass through a user-controlled key.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

JeeSite 5.11.0 through 5.19.1 contains an insecure direct object reference vulnerability in the AI CMS chat module that allows authenticated users to access other users' conversations due to missing and reversed ownership checks. Attackers who know or derive a victim's conversation id can call /a/cms/chat/message, /a/cms/chat/delete, or /a/cms/chat/completions to read, delete, or append to the victim's AI chat transcripts.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0027 19th 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: No
Technical impact: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
thinkgem	JeeSite	5.11.0 – 5.19.1	—	No fix listed	CNA

JeeSite Vendorthinkgem Affected 5.11.0 – 5.19.1 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:jeesite:jeesite::::::::	—	—	thinkgem

cpe:2.3:a:jeesite:jeesite:*:*:*:*:*:*:*:* Versions — — ·thinkgem

Remediation

The sources list no fixed version for JeeSite.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

2026-10-29 Threatist record created from CVE-2026-119048
2026-10-29 Alias added: GHSA-p9w4-jq2c-hfxp
2026-10-29 CISA SSVC decision points changed

References

Patch 1

https://github.com/thinkgem/jeesite5/commit/cbc5ba7a37fd93f38c46ef656bd31442fe6f8015

Other 5

TI-2023-17334 Jeesite before commit 10742d3 was discovered to contain a SQL injection vulnerability via… CVSS 3.1CRITICAL 9.8
TI-2023-20231 An issue in the delete function in the ActModelController class of jeesite v1.2.6 allows… CVSS 3.1MEDIUM 5.4
TI-2025-07188 thinkgem JeeSite FileUploadController.java upload unrestricted upload CVSS 4.0MEDIUM 5.3
TI-2025-07110 thinkgem JeeSite SsoController.java sso redirect CVSS 4.0MEDIUM 5.3
TI-2025-07088 thinkgem JeeSite Site Controller SiteController.java select redirect CVSS 4.0MEDIUM 5.3
TI-2025-07084 thinkgem JeeSite UEditor Image Grabber ActionEnter.java server-side request forgery CVSS 4.0MEDIUM 5.3

See all 19 →

Sources

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