Information Exposure Affecting apr-util package, versions <1.6.4-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.38% (31st percentile)

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  • Snyk IDSNYK-ALPINE321-APRUTIL-18580193
  • published7 Aug 2026
  • disclosed6 Aug 2026

Introduced: 6 Aug 2026

NewCVE-2025-49506  (opens in a new tab)
CWE-208  (opens in a new tab)

How to fix?

Upgrade Alpine:3.21 apr-util to version 1.6.4-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream apr-util package and not the apr-util package as distributed by Alpine. See How to fix? for Alpine:3.21 relevant fixed versions and status.

APR-util versions 1.6.3 (and earlier) function apr_password_validate() was not constant-time with regards to hashes or passwords comparisons, potentially leaking their content via a side channel timing attack particularly on platforms without crypt() such as  Windows, BeOS, NetWare, or Android.

Users are recommended to upgrade to version 1.6.4, which fixes this issue.

CVSS Base Scores

version 3.1