PatchTheCVECVE-2023-22963: The personnummer implementation before 3.0.3 for Dart mishandles numbers in which the last four digits match t
CVE-2023-22963 is a medium-severity flaw (CVSS 5.3) affecting personnummer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The personnummer implementation before 3.0.3 for Dart mishandles numbers in which the last four digits match the ^000[0-9]$ regular expression.
Why this priority
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.5% (top 56%) |
| CISA exploited list | No |
| Weakness | CWE-20 |
| Published | 2023-01-11 |
| 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-2023-22963?
personnummer: upgrade to 3.0.3. Exact commands for each OS are on this page.
Is CVE-2023-22963 being exploited?
CVE-2023-22963 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-2023-22963 affect?
CVE-2023-22963 affects personnummer. Severity is medium (CVSS 5.3). The personnummer implementation before 3.0.3 for Dart mishandles numbers in which the last four digits match the ^000[0-9]$ regular expression.
How urgent is CVE-2023-22963?
Priority 34/100. Remotely exploitable, no login, no user action