CVE-2021-46477

Name: CVE-2021-46477
Creator: NVD / NIST
Published: 2022-01-25T01:15:07.893+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.69%

Last modified Jun 17, 2026

CVE-2021-46477 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Jsish v3.5.0 was discovered to contain a heap buffer overflow via RegExp_constructor in src/jsiRegexp.c. This vulnerability can lead to a Denial of Service (DoS).. EPSS estimates a 0.69% chance of exploitation in the next 30 days.

Description

Jsish v3.5.0 was discovered to contain a heap buffer overflow via RegExp_constructor in src/jsiRegexp.c. This vulnerability can lead to a Denial of Service (DoS).

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

0.69%

48.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Jsish	Jsish	3.5.0

References

https://github.com/pcmacdon/jsish/issues/63Exploit, Patch, Third Party Advisory
https://github.com/pcmacdon/jsish/issues/63Exploit, Patch, Third Party Advisory

Timeline

Published: Jan 25, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-46477?

Jsish v3.5.0 was discovered to contain a heap buffer overflow via RegExp_constructor in src/jsiRegexp.c. This vulnerability can lead to a Denial of Service (DoS).

How severe is CVE-2021-46477?

CVE-2021-46477 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.69% probability of exploitation in the next 30 days.

How do I fix CVE-2021-46477?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-46477?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST