What is CVE-2021-46504?

CVE-2021-46504 is a medium-severity vulnerability in Jsish, classified under Reachable Assertion. CVSS score: 5.5/10. Published 2022-01-27.

How severe is CVE-2021-46504?

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

Vulnerability in Jsish

CVE-2021-46504

There is an Assertion 'vp != resPtr' failed at jsiEval.c in Jsish v3.5.0.

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: 0.006 (46.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Jsish — versions 3.5.0

Weakness classification (CWE)

CWE-617 — Reachable Assertion

References

github.com/pcmacdon/jsish/issues/51 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-46504?: CVE-2021-46504 is a medium-severity vulnerability in Jsish, classified under Reachable Assertion. CVSS score: 5.5/10. Published 2022-01-27.
How severe is CVE-2021-46504?: Medium severity. CVSS v3 base score is 5.5 out of 10.