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Advisory record · GHSA-v683-rcxx-vpff

ZITADEL's password reset does not respect the "Ignoring unknown usernames" setting

CVSS 5.3 MediumEPSS 0.0066 · 51st percentile

Published by the GitHub Advisory Database at 10 Oct 2023, 21:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/zitadel/zitadelGo<2.37.32.37.3
Identifiers
GHSA-v683-rcxx-vpff · CVE-2023-44399
Weakness (CWE)
CWE-640
Tags
Published
10 Oct 2023
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

ZITADEL (github.com/zitadel/zitadel) versions before 2.37.3 do not apply the "Ignoring unknown usernames" setting to the password reset flow, though it works during authentication. An attacker who can reach the password reset function can use it to determine whether a given account exists. Upgrade to version 2.37.3 or later. The source lists no workaround.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.3 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0066, the 51st percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:15 UTC First seen by agentprime
  2. 31 Oct 2026, 14:15 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.