njs through 0.7.1, used in NGINX, was discovered to contain a segmentation violation via njs_object_set_prototype in /src/njs_object.c.

published 2022-02-14 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-33138

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.7%; EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits: 0; none known

Patch / fix

distros 1 links 2

njs Alpine 3.24, Alpine 3.23, Alpine 3.22 +7 more 0.7.3-r0
nginx Alpine 3.24, Alpine 3.23, Alpine 3.22 +6 more 1.20.2-r2

alpine advisories ALPINE-CVE-2021-46462

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

github.com/nginx/njs@39e8fa1 commit
github.com/nginx/njs/issues/449 advisory

Exploit prediction

1.69% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/nginx/njs/issues/449 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P

References

github.com /nginx/njs/commit/39e8fa1b7db1680654527f8fa0e9ee93b334ecba
patch, vendor-advisory
github.com /nginx/njs/issues/449
exploit, issue-tracking, patch, third-party-advisory
security.netapp.com /advisory/ntap-20220303-0007/
third-party-advisory

Sources

CVE List CVE-2021-46462
NVD CVE-2021-46462

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary