CVE-2020-24349 json
njs through 0.4.3, used in NGINX, allows control-flow hijack in njs_value_property in njs_value.c.
published 2020-08-13 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-17083
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 45%
- public exploits
- 0
- none known
Summary
njs through 0.4.3, used in NGINX, allows control-flow hijack in njs_value_property in njs_value.c. NOTE: the vendor considers the issue to be "fluff" in the NGINX use case because there is no remote attack surface.
Patch / fix
- github.com/nginx/njs/issues/324 advisory
Exploit prediction
0.53% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/nginx/njs/issues/324 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-416 Use After Free
References
-
github.com
/nginx/njs/issues/324
exploit, issue-tracking, patch, third-party-advisory
-
cwe.mitre.org
/data/definitions/416.html
third-party-advisory
-
security.netapp.com
/advisory/ntap-20200918-0001/
third-party-advisory
Sources
- CVE List CVE-2020-24349
- NVD CVE-2020-24349
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