Vulnerability · Published Jul 31, 2025 · Assigned by mitre
CVE-2025-45768
High 7.0
In plain English
A high-severity security flaw in the pyjwt package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.0High
Exploit odds (30 days)0.2%top 90.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | pyjwt | no fix listed | DEBIAN-CVE-2025-45768 |
| Debian:13 | pyjwt | no fix listed | DEBIAN-CVE-2025-45768 |
| Debian:14 | pyjwt | 2.11.0-2 | DEBIAN-CVE-2025-45768 |
| PyPI | pyjwt | no fix listed | PYSEC-2025-183 |
| Ubuntu:22.04:LTS | pyjwt | no fix listed | UBUNTU-CVE-2025-45768 |
| Ubuntu:24.04:LTS | pyjwt | no fix listed | UBUNTU-CVE-2025-45768 |
| Ubuntu:25.10 | pyjwt | no fix listed | UBUNTU-CVE-2025-45768 |
Affected products (as reported)
Weakness: CWE-311 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H