Cleartext Transmission of Sensitive Information Affecting libcurl package, versions [7.77.0,7.87.0)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-CONAN-LIBCURL-10076453
  • published8 May 2025
  • disclosed21 Dec 2022
  • creditHiroki Kurosawa

Introduced: 21 Dec 2022

CVE-2022-43551  (opens in a new tab)
CWE-319  (opens in a new tab)

How to fix?

Upgrade libcurl to version 7.87.0 or higher.

Overview

Affected versions of this package are vulnerable to Cleartext Transmission of Sensitive Information when bypassing HSTS check and keep it using HTTP.

PoC

curl --hsts hsts.txt https://curl%E3%80%82se
curl --hsts hsts.txt http://curl%E3%80%82se

CVSS Base Scores

version 3.1