Jsish v3.5.0 was discovered to contain a heap buffer overflow via NumberConstructor at src/jsiNumber.c.

published 2022-01-25 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-33158

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 58%
public exploits: 0; none known

Patch / fix

links 1

github.com/pcmacdon/jsish/issues/66 advisory

Exploit prediction

0.84% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/pcmacdon/jsish/issues/66 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-787 Out-of-bounds Write

References

github.com /pcmacdon/jsish/issues/66
exploit, patch, third-party-advisory

Sources

CVE List CVE-2021-46482
NVD CVE-2021-46482

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