Description
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.
Published: 2026-08-06
Score: 7.5 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Thu, 06 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 06 Aug 2026 16:15:00 +0000

Type Values Removed Values Added
First Time appeared Apache
Apache portable Runtime Utility
Vendors & Products Apache
Apache portable Runtime Utility

Thu, 06 Aug 2026 14:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Apache Portable Runtime Utility: apr_password_validate() vulnerable to timing attack
Weaknesses CWE-208
References

Subscriptions

Apache Portable Runtime Utility
cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-08-06T14:33:12.957Z

Reserved: 2025-06-06T09:23:28.146Z

Link: CVE-2025-49506

cve-icon Vulnrichment

Updated: 2026-08-06T17:45:12.827Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-06T16:00:06Z

Weaknesses