CVE-2021-44164 json
Chain Sea Information Integration Co., Ltd ai chatbot system - Arbitrary File Upload
published 2021-12-20 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-31014
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.1%
- EPSS 2.1% chance of exploitation in 30 days, percentile 82%
- public exploits
- 0
- none known
Summary
Chain Sea ai chatbot system’s file upload function has insufficient filtering for special characters in URLs, which allows a remote attacker to by-pass file type validation, upload malicious script and execute arbitrary code without authentication, in order to take control of the system or terminate service.
Exploit prediction
2.12% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- Chain Sea Information Integration Co., Ltd ai chatbot system
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
twcert.org.tw
/tw/cp-132-5400-c31d1-1.html
third-party-advisory
Sources
- CVE List CVE-2021-44164
- NVD CVE-2021-44164
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