What is CVE-2021-46496?

CVE-2021-46496 is a medium-severity vulnerability in Jsish, classified under Use After Free. CVSS score: 5.5/10. Published 2022-01-27.

How severe is CVE-2021-46496?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Use After Free in Jsish

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).

Vulnerability class: Use-After-Free

Published 2022-01-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (49.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Jsish — versions 3.5.0

Weakness classification (CWE)

CWE-416 — Use After Free

References

github.com/pcmacdon/jsish/issues/83 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-46496?: CVE-2021-46496 is a medium-severity vulnerability in Jsish, classified under Use After Free. CVSS score: 5.5/10. Published 2022-01-27.
How severe is CVE-2021-46496?: Medium severity. CVSS v3 base score is 5.5 out of 10.