There is an Assertion 'ppos != NULL && mjs_is_number(*ppos)' failed at src/mjs_core.c in Cesanta MJS v2.20.0.
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 'ppos != NULL && mjs_is_number(*ppos)' failed at src/mjs_core.c in Cesanta MJS v2.20.0.
Why it matters now
EPSS 0.00614 49th 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
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-46514
- 2026-10-03 Alias added: GHSA-gpw5-j8cp-9p59
References
More Cesanta Mjs vulnerabilities
- TI-2023-23198 Cesanta mjs v2.20.0 was discovered to contain a function pointer hijacking vulnerability… CVSS 3.1CRITICAL 9.8
- TI-2023-27057 An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via… CVSS 3.1HIGH 7.5
- TI-2023-27055 An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via… CVSS 3.1HIGH 7.5
- TI-2023-27054 An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs+0x4ec508 component. CVSS 3.1HIGH 7.5
- TI-2023-27056 An Out of Bounds Write in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial… CVSS 3.1HIGH 7.5
- TI-2023-27053 An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via… CVSS 3.1HIGH 7.5
Sources
- CVE-2021-46514 · CVE Program
- CVE-2021-46514 · NVD
- FIRST EPSS
- GHSA-gpw5-j8cp-9p59 · 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