There is an Assertion 'lit_is_valid_cesu8_string (string_p, string_size)' failed at…
Priority LOW 26CWE-617Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-617.
Summary
There is an Assertion 'lit_is_valid_cesu8_string (string_p, string_size)' failed at /base/ecma-helpers-string.c(ecma_new_ecma_string_from_utf8) in JerryScript 3.0.0.
Why it matters now
EPSS 0.00621 50th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:jerryscript:jerryscript:3.0.0:*:*:*:*:*:*:* | 3.0.0 | Vulnerable | JerryScript |
- cpe:2.3:a:jerryscript:jerryscript:3.0.0:*:*:*:*:*:*:* Versions 3.0.0 Vulnerable ·JerryScript
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-46339
- 2026-10-03 Alias added: GHSA-h4gj-73w7-82hq
- 2026-11-07 EPSS moved to the 50th–90th percentile
References
More Jerryscript vulnerabilities
- TI-2023-20218 Buffer Overflwo vulnerability in JerryScript Project jerryscript v.3.0.0 allows a remote… CVSS 3.1CRITICAL 9.8
- TI-2023-18120 Buffer Overflow vulnerability in JerryScript version 3.0, allows remote attackers to… CVSS 3.1CRITICAL 9.8
- TI-2020-14354 An issue in Jerrscript- project Jerryscrip v. CVSS 3.1CRITICAL 9.8
- TI-2023-17424 Jerryscript 3.0 (commit 05dbbd1) was discovered to contain an Assertion Failure via the… CVSS 3.1HIGH 7.5
- TI-2023-15262 Jerryscript 3.0 (commit 05dbbd1) was discovered to contain a heap-buffer-overflow via the… CVSS 3.1HIGH 7.8
- TI-2023-15261 Jerryscript 3.0 (commit 05dbbd1) was discovered to contain a heap-buffer-overflow via the… CVSS 3.1HIGH 7.8
Sources
- CVE-2021-46339 · CVE Program
- CVE-2021-46339 · NVD
- FIRST EPSS
- GHSA-h4gj-73w7-82hq · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences