CVE-2023-34188 Affecting swupdate package, versions <2024.12+dfsg-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
1.01% (62nd percentile)

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  • Snyk IDSNYK-ECHOLATEST-SWUPDATE-20877402
  • published13 Oct 2026
  • disclosed23 Jun 2023

Introduced: 23 Jun 2023

CVE-2023-34188  (opens in a new tab)

How to fix?

Upgrade Echo:latest swupdate to version 2024.12+dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream swupdate package and not the swupdate package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

The HTTP server in Mongoose before 7.10 accepts requests containing negative Content-Length headers. By sending a single attack payload over TCP, an attacker can cause an infinite loop in which the server continuously reparses that payload, and does not respond to any other requests.

CVSS Base Scores

version 3.1