CVE-2021-46496

Name: CVE-2021-46496
Creator: NVD / NIST
Published: 2022-01-27T21:15:08.87+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.66%

Last modified Jun 17, 2026

CVE-2021-46496 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Jsish v3.5.0 was discovered to contain a heap-use-after-free via Jsi_ObjFree in src/jsiObj.c. This vulnerability can lead to a Denial of Service (DoS).. EPSS estimates a 0.66% chance of exploitation in the next 30 days.

Description

Jsish v3.5.0 was discovered to contain a heap-use-after-free via Jsi_ObjFree in src/jsiObj.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

0.66%

47.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Jsish	Jsish	3.5.0

References

https://github.com/pcmacdon/jsish/issues/83Exploit, Issue Tracking, Third Party Advisory
https://github.com/pcmacdon/jsish/issues/83Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Jan 27, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-46496?

Jsish v3.5.0 was discovered to contain a heap-use-after-free via Jsi_ObjFree in src/jsiObj.c. This vulnerability can lead to a Denial of Service (DoS).

How severe is CVE-2021-46496?

CVE-2021-46496 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.

How do I fix CVE-2021-46496?

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-2021-46496?

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

Scan your code now

Source: NVD / NIST