Cleartext Transmission of Sensitive Information Affecting libcurl4 package, versions <8.14.1-150400.5.83.1


Severity

Recommended
0.0
low
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.26% (18th percentile)

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  • Snyk IDSNYK-SLES154-LIBCURL4-16478855
  • published7 May 2026
  • disclosed6 May 2026

Introduced: 6 May 2026

CVE-2026-6276  (opens in a new tab)
CWE-319  (opens in a new tab)

How to fix?

Upgrade SLES:15.4 libcurl4 to version 8.14.1-150400.5.83.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libcurl4 package and not the libcurl4 package as distributed by SLES. See How to fix? for SLES:15.4 relevant fixed versions and status.

Using libcurl, when a custom Host: header is first set for an HTTP request and a second request is subsequently done using the same easy handle but without the custom Host: header set, the second request would use stale information and pass on cookies meant for the first host in the second request. Leak them.

CVSS Base Scores

version 3.1