CVE-2025-45769: firebase php-jwt Weak Crypto (CVSS 6.5)

Description

php-jwt v6.11.0 was discovered to contain weak encryption. NOTE: this issue has been disputed on the basis that key lengths are expected to be set by an application, not by this library. This dispute is subject to review under CNA rules 4.1.4, 4.1.14, and other rules; the dispute tagging is not meant to recommend an outcome for this CVE Record.

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CVSS v3.1 Score

6.5

MEDIUM

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

Weakness Type (CWE)

CWE-326 CWE-326

Affected Products

Vendor	Product	Versions
google	firebase_php-jwt	< 6.11.0

References

Other References

https://gist.github.com/ZupeiNie/83756316c4c24fe97a50176a92608db3 https://github.com/advisories/GHSA-2x45-7fc3-mxwq https://github.com/firebase https://github.com/firebase/php-jwt https://github.com/firebase/php-jwt/issues/620 https://github.com/firebase/php-jwt/pull/613 https://github.com/firebase/php-jwt/releases/tag/v7.0.0 https://github.com/github/advisory-database/pull/6954

Frequently Asked Questions

What is CVE-2025-45769? +

php-jwt v6.11.0 was discovered to contain weak encryption. NOTE: this issue has been disputed on the basis that key lengths are expected to be set by an application, not by this library. This dispute is subject to review under CNA rules 4.1.4, 4.1.14, and other rules; the dispute tagging is not meant to recommend an outcome for this CVE Record. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-45769? +

CVE-2025-45769 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-45769? +

CVE-2025-45769 affects products from google, specifically: firebase_php-jwt. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-45769? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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