PatchTheCVECVE-2023-52428: In Connect2id Nimbus JOSE+JWT before 9.37.2, an attacker can cause a denial of service (resource consumption)
CVE-2023-52428 is a high-severity flaw (CVSS 7.5) affecting nimbus jose\+jwt. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
In Connect2id Nimbus JOSE+JWT before 9.37.2, an attacker can cause a denial of service (resource consumption) via a large JWE p2c header value (aka iteration count) for the PasswordBasedDecrypter (PBKDF2) component.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.8% (top 43%) |
| CISA exploited list | No |
| Weakness | CWE-770 |
| Published | 2024-02-11 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2023-52428?
nimbus jose\+jwt: upgrade to 9.37.2. Exact commands for each OS are on this page.
Is CVE-2023-52428 being exploited?
CVE-2023-52428 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2023-52428 affect?
CVE-2023-52428 affects nimbus jose\+jwt. Severity is high (CVSS 7.5). In Connect2id Nimbus JOSE+JWT before 9.37.2, an attacker can cause a denial of service (resource consumption) via a large JWE p2c header value (aka iteration count) for the PasswordBasedDecrypter (PBKDF2) component.
How urgent is CVE-2023-52428?
Priority 45/100. High severity; Remotely exploitable, no login, no user action