CVE-2021-43635 json
A Cross Site Scripting (XSS) vulnerability exists in Codex before 1.4.0 via Notebook/Page name field, which allows malicious users to execu…
published 2022-02-04 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-30547
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.8%
- EPSS 1.8% chance of exploitation in 30 days, percentile 78%
- public exploits
- 0
- none known
Summary
A Cross Site Scripting (XSS) vulnerability exists in Codex before 1.4.0 via Notebook/Page name field, which allows malicious users to execute arbitrary code via a crafted http code in a .json file.
Patch / fix
Exploit prediction
1.78% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/jcv8000/Codex/issues/8 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/jcv8000/Codex/issues/8
exploit, third-party-advisory
-
github.com
/jcv8000/Codex
product, third-party-advisory
-
github.com
/jcv8000/Codex/releases/tag/v1.4.1
release-notes, third-party-advisory
Sources
- CVE List CVE-2021-43635
- NVD CVE-2021-43635
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