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Vulnerabilities

Vulnerability · CVE-2023-22963

personnummer/dart vulnerable to Improper Input Validation

Published Sep 19, 2022 · catalog updated Jul 8, 2026 · personnummer/dart vulnerable to Improper

Check if you run it

No confirmed exploitation is on record for CVE-2023-22963. EPSS is 0.49%. Act only if a listed version of personnummer/dart vulnerable to Improper is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (personnummer/dart vulnerable to Improper).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.49%
Remediation
Advisory link
Affected products
Pub personnummer

This vulnerability was reported to the personnummer team in June 2020. The slow response was due to locked ownership of some of the affected packages, which caused delays to update packages prior to disclosure. The vulnerability is determined to be low severity. ### Impact This vulnerability impacts users who rely on the for last digits of personnummer to be a _real_ personnummer. ### Patches The issue have been patched in all repositories. The following versions should be updated to as soon as possible: [C#](https://github.com/advisories/GHSA-qv8q-v995-72gr) 3.0.2 D 3.0.1 [Dart](https://github.com/advisories/GHSA-4xh4-v2pq-jvhm) 3.0.3 Elixir 3.0.0 [Go](https://github.com/advisories/GHSA-hv53-vf5m-8q94) 3.0.1 [Java](https://github.com/advisories/GHSA-q3vw-4jx3-rrr2) 3.3.0 [JavaScript](https://github.com/advisories/GHSA-vpgc-7h78-gx8f) 3.1.0 Kotlin 1.1.0 Lua 3.0.1 [PHP](https://github.com/advisories/GHSA-2p6g-gjp8-ggg9) 3.0.2 Perl 3.0.0 [Python](https://github.com/advisories/GHSA-rxq3-5249-8hgg) 3.0.2 [Ruby](https://github.com/advisories/GHSA-vp9c-fpxx-744v) 3.0.1 [Rust](https://github.com/advisories/GHSA-28r9-pq4c-wp3c) 3.0.0 Scala 3.0.1 Swift 1.0.1 If you are using any of the earlier packages, please update to latest. ### Workarounds The issue arrieses from the regular expression allowing the first three digits in the last four digits of the personnummer to be 000, which is invalid. To mitigate this without upgrading, a check on the last four digits can be made to make sure it's not 000x. ### For more information If you have any questions or comments about this advisory: * Open an issue in [Personnummer Meta](https://github.com/personnummer/meta/issues) * Email us at [Personnummer Email](mailto:security@personnummer.dev)

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Pub personnummer0 → 3.0.3

How to fix CVE-2023-22963

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2023-22963. EPSS is 0.49%. Act only if a listed version of personnummer/dart vulnerable to Improper is installed.

Which versions are affected?

Compare what you have installed with 0 → 3.0.3. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-20: Improper Input Validation. EPSS 0.49%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 19, 2022 · GitHub Advisory Database

    Detected

    This vulnerability was reported to the personnummer team in June 2020. The slow response was due to locked ownership of some of the affected packages, which caused delays to update packages prior to disclosure. The vulnerability is determined to be low severity. ### Impact This vulnerability impacts users who rely on the for last digits of personnummer to be a _real_ personnummer. ### Patches The

  2. Jul 8, 2026 · GitHub Advisory Database

    Fix available

    personnummer fixed in 3.0.3

  3. Jul 8, 2026 · GitHub Advisory Database

    Fix available

    personnummer fixed in 3.0.3

  4. Jul 8, 2026 · GitHub Advisory Database

    Updated

    This vulnerability was reported to the personnummer team in June 2020. The slow response was due to locked ownership of some of the affected packages, which caused delays to update packages prior to disclosure. The vulnerability is determined to be low severity. ### Impact This vulnerability impacts users who rely on the for last digits of personnummer to be a _real_ personnummer. ### Patches The

Sources

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.