Buffer Overflow vulnerability in JerryScript version 3.0, allows remote attackers to…
Priority HIGH 82CWE-120Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.
Summary
Buffer Overflow vulnerability in JerryScript version 3.0, allows remote attackers to execute arbitrary code via ecma_stringbuilder_append_raw component at /jerry-core/ecma/base/ecma-helpers-string.c.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.02368 83rd percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
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:*:*:*:*:*:*:* | 3.0 | Vulnerable | JerryScript |
- cpe:2.3:a:jerryscript:jerryscript:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·JerryScript
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-36109
- 2026-10-03 Alias added: GHSA-7fm9-3h22-jxvh
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-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
- TI-2023-15260 Jerryscript 3.0.0 was discovered to contain a heap-buffer-overflow via the component… CVSS 3.1HIGH 7.8
Sources
- CVE-2023-36109 · CVE Program
- CVE-2023-36109 · NVD
- FIRST EPSS
- GHSA-7fm9-3h22-jxvh · GitHub Advisory Database · CC BY 4.0
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