How to fix CVE-2025-40905?

Within 24 hours: Inventory all systems and applications using WWW::OAuth library and document affected versions and deployment scope. Within 7 days: Implement compensating controls (disable OAuth if not critical, apply WAF rules to detect token anomalies, isolate affected systems on restricted network segments) and evaluate upgrading to WWW::OAuth 1.001 or later when available. Within 30 days: Complete patching or replacement of affected library; conduct OAuth token audit to identify potentially compromised tokens; implement additional entropy sources where library updates are not immediately feasible.

CVE-2025-40905

HIGH

2026-02-13 9b29abf9-4ab0-4765-b253-1875cd9b441e

Information Disclosure

7.3

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

CVE Published

Feb 13, 2026 - 00:16 nvd

HIGH 7.3

DescriptionNVD

WWW::OAuth 1.000 and earlier for Perl uses the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions.

AnalysisAI

WWW::OAuth 1.000 and earlier for Perl uses the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions. [CVSS 7.3 HIGH]

Technical ContextAI

Affects Www\. WWW::OAuth 1.000 and earlier for Perl uses the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions.

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

CVE-2025-40905 vulnerability details – vuln.today

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