Kimai before 2.54.0 Username Enumeration via Timing Oracle
Kimai before 2.54.0 contains a timing oracle vulnerability in TokenAuthenticator that allows unauthenticated attackers to enumerate valid usernames via X-AUTH-USER header. Attackers can measure response time differences when the password hasher runs only for existing users, enabling username enumeration with no login throttling protection.
CVE-2026-80199
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-80199
kimai
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "kimai",
"product": "kimai",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "2.54.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "2.54.0",
"versionType": "semver"
}
],
"packageURL": "pkg:composer/kimai/kimai",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-80199
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #12902 · Revision 1
- Added to Heist Feed
- Publisher date