CVE-2018-20352

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2019-06-10 · updated 2026-06-17
Weakness: CWE-416

Description

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.

Affected products

Cesanta Mongoose Embedded Web Server Library: through 6.13

References

https://github.com/insi2304/mongoose-6.13-fuzz
https://github.com/insi2304/mongoose-6.13-fuzz

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