CVE-2025-45768: Weak Encryption

Published Jul 31, 2025
·
Updated

pyjwt v2.10.1 was discovered to contain weak encryption. NOTE: this is disputed by the Supplier because the key length is chosen by the application that uses the library (admittedly, library users may benefit from a minimum value and a mechanism for opting in to strict enforcement).

Affected Software

3 affected components
PyJWT PyJWT
Pyjwt Project Pyjwt=2.10.1
IBM Concert Software<=1.0.0-2.0.0

Event History

Jul 31, 2025
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via NVD·09:15 PM
DescriptionSeverityWeaknessAffected Software
Oct 28, 2025
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2025-45768?

CVE-2025-45768 has been assessed as a moderate severity vulnerability due to its weak encryption in pyjwt v2.10.1.

2

How do I fix CVE-2025-45768?

To fix CVE-2025-45768, update pyjwt to the latest version that addresses the encryption weakness.

3

What impact does CVE-2025-45768 have on my application?

CVE-2025-45768 could potentially allow unauthorized access to sensitive data due to its weak encryption implementation.

4

Which versions of pyjwt are affected by CVE-2025-45768?

CVE-2025-45768 affects pyjwt version 2.10.1 and possibly other versions with similar vulnerabilities.

5

Is there a patch for CVE-2025-45768?

Yes, a patch is available in the subsequent releases of pyjwt that enhance encryption strength.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203