CVE-2025-10148 Affecting libcurl4-32bit package, versions <8.14.1-150600.4.28.1


Severity

Recommended
medium

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.04% (10th percentile)

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  • Snyk IDSNYK-SLES156-LIBCURL432BIT-12657405
  • published13 Sept 2025
  • disclosed12 Sept 2025

Introduced: 12 Sep 2025

CVE-2025-10148  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 libcurl4-32bit to version 8.14.1-150600.4.28.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libcurl4-32bit package and not the libcurl4-32bit package as distributed by SLES. See How to fix? for SLES:15.6 relevant fixed versions and status.

curl's websocket code did not update the 32 bit mask pattern for each new outgoing frame as the specification says. Instead it used a fixed mask that persisted and was used throughout the entire connection.

A predictable mask pattern allows for a malicious server to induce traffic between the two communicating parties that could be interpreted by an involved proxy (configured or transparent) as genuine, real, HTTP traffic with content and thereby poison its cache. That cached poisoned content could then be served to all users of that proxy.

CVSS Base Scores

version 3.1