What is CVE-2020-23320?

CVE-2020-23320 is a high-severity vulnerability in Jerryscript, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2021-06-10.

How severe is CVE-2020-23320?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Jerryscript

CVE-2020-23320

There is an Assertion in 'context_p->next_scanner_info_p->type == SCANNER_TYPE_FUNCTION' in parser_parse_function_arguments in JerryScript 2.2.0.

Published 2021-06-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.011 (63.9th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Jerryscript — versions 2.2.0

Weakness classification (CWE)

CWE-617 — Reachable Assertion

References

github.com/jerryscript-project/jerryscript/issues/3835 (Exploit, Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2020-23320?: CVE-2020-23320 is a high-severity vulnerability in Jerryscript, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2021-06-10.
How severe is CVE-2020-23320?: High severity. CVSS v3 base score is 7.5 out of 10.