CVE-2018-20354

An invalid read of 8 bytes due to a use-after-free vulnerability ...

Published 10 Jun 2019Modified 17 Jun 2026CWE 416

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD.

Description

An invalid read of 8 bytes due to a use-after-free vulnerability during a "return" in the mg_http_get_proto_data 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 packages and fixed versions

Source	Package	Fixed in
rapidfort fedora 43	mongoose, mongoose-devel, mongoose-lib	3.1-30.fc43

Show all 3 entries from 1 source

Source	Package	Fixed in
rapidfort fedora 43	mongoose	3.1-30.fc43
rapidfort fedora 43	mongoose-devel	3.1-30.fc43
rapidfort fedora 43	mongoose-lib	3.1-30.fc43

References

https://github.com/insi2304/mongoose-6.13-fuzz/blob/master/Simplest_Web_Server_Use_After_Free-read-mg_http_get_proto_data.png

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Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.