Answer in brief
CVE-2023-44399 records a Medium severity (CVSS 5.3) vulnerability in ZITADEL's password reset does not respect the "Ignoring unknown usernames" setting. The current sources do not mark it as known exploited. The current feed maps github.com/zitadel/zitadel (go). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps github.com/zitadel/zitadel (go). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| github.com/zitadel/zitadelgo | >=0 <2.37.3 | 2.37.3 |
Published upstream
Oct 10, 2023
Evidence: source:osv:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Sep 10, 2026
### Impact ZITADEL administrators can enable a setting called "Ignoring unknown usernames" which helps mitigate attacks that try to guess/enumerate usernames. While this settings was properly working during the authentication process it did not work correctly on the password reset flow. This meant that even if this feature was active that an attacker could use the password reset function to verify if an account exist within ZITADEL. ### Patches This bug has been patched in versions >2.27.2 beginning with [2.37.3](https://github.com/zitadel/zitadel/releases/tag/v2.37.3) and [2.38.0](https://github.com/zitadel/zitadel/releases/tag/v2.38.0) ### Workarounds None available we advise to updated if this is needed. ### References None
Quoted source text, attributed separately from HOL analysis.