CVE-2026-108689 (CVSS 5.4)

Description

Wukong AICRM through 20260610 contains a missing authorization vulnerability that allows authenticated users to write into other users' AI chat sessions by supplying an arbitrary sessionId to POST /chat/send. Attackers can append messages to a victim's conversation and receive streamed assistant replies built from the victim's last 20 messages, disclosing conversation content.

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CVSS v3.1 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS — Exploit Prediction

0.0017

Probability of exploitation

0.06%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-639 CWE-639

References

Other References

https://github.com/AnkesKasty/cve-request-poc/blob/a7b6d1423555812d8efa26c91c5d0683164b31e5/Wukong-AICRM/poc_chat_send.py https://github.com/WuKongOpenSource/Wukong-AICRM/blob/cdd1fbc3187d2bcbf2cdf2be7d50c988959da356/backend/src/main/java/com/kakarote/ai_crm/service/impl/ChatServiceImpl.java#L270-L283 https://www.vulncheck.com/advisories/wukong-aicrm-through-20260610-authorization-bypass-via-user-controlled-session-id-in-post-chat-send

Frequently Asked Questions

What is CVE-2026-108689? +

Wukong AICRM through 20260610 contains a missing authorization vulnerability that allows authenticated users to write into other users' AI chat sessions by supplying an arbitrary sessionId to POST /chat/send. Attackers can append messages to a victim's conversation and receive streamed assistant replies built from the victim's last 20 messages, disclosing conversation content. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2026-108689? +

CVE-2026-108689 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0017, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-108689? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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