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TI-2018-14406 Aliases CVE-2018-20352GHSA-8fhm-6jq5-22c6

Use-after-free vulnerability in the mg_cgi_ev_handler function in mongoose.c in Cesanta…

Priority MEDIUM 43CWE-416Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

Use-after-free vulnerability in the mg_cgi_ev_handler function in mongoose.c in Cesanta Mongoose Embedded Web Server Library 6.13 and earlier allows a denial of service (application crash) or remote code execution.

Why it matters now

EPSS 0.02725 86th 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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cesanta:mongoose_embedded_web_server_library:*:*:*:*:*:*:*:*up to 6.13VulnerableCesanta
  • cpe:2.3:a:cesanta:mongoose_embedded_web_server_library:*:*:*:*:*:*:*:* Versions up to 6.13 Vulnerable ·Cesanta

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-20352
  2. 2026-10-03 Alias added: GHSA-8fhm-6jq5-22c6

References

Exploit 1

  • TI-2017-04881 Use-after-free vulnerability in the mg_http_multipart_wait_for_boundary function in… CVSS 3.0HIGH 7.5
  • TI-2017-08561 Cross-site request forgery (CSRF) vulnerability in Mongoose Web Server before 6.9 allows… CVSS 3.0HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences