What is CVE-2023-34867?

CVE-2023-34867 is a high-severity vulnerability in Jerryscript, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2023-06-14.

How severe is CVE-2023-34867?

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

Vulnerability in Jerryscript

CVE-2023-34867

Jerryscript 3.0 (commit 05dbbd1) was discovered to contain an Assertion Failure via the ecma_property_hashmap_create at jerry-core/ecma/base/ecma-property-hashmap.c.

Published 2023-06-14 · 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: 0.007 (52.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.5% 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

Jerryscript — versions 3.0.0

Weakness classification (CWE)

CWE-617 — Reachable Assertion

References

github.com/jerryscript-project/jerryscript/issues/5084 (Exploit, Issue Tracking)

Frequently asked questions

What is CVE-2023-34867?: CVE-2023-34867 is a high-severity vulnerability in Jerryscript, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2023-06-14.
How severe is CVE-2023-34867?: High severity. CVSS v3 base score is 7.5 out of 10.