CVE-2025-10148 Affecting curl package, versions <8.16.0-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.03% (9th percentile)

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  • Snyk IDSNYK-DEBIAN14-CURL-12613263
  • published11 Sept 2025
  • disclosed12 Sept 2025

Introduced: 11 Sep 2025

NewCVE-2025-10148  (opens in a new tab)

How to fix?

Upgrade Debian:14 curl to version 8.16.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Debian. See How to fix? for Debian:14 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