CVE-2026-58272

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Source
https://cve.org/CVERecord?id=CVE-2026-58272
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-58272.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-58272
Aliases
Published
2026-09-21T20:31:46Z
Modified
2026-09-22T11:45:43Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
Sync-in Server has Username/Login Enumeration via Timing Side-Channel on POST /api/auth/login (incomplete fix of the prior timing-attack advisory)
Details

Sync-in Server is an open-source platform for file storage, sharing, collaboration, and syncing. Versions prior to 2.4.1 contain an observable timing discrepancy in the login endpoint because authentication attempts for nonexistent accounts return without performing the bcrypt comparison used for existing accounts. An unauthenticated attacker can measure response times to enumerate valid usernames or email addresses, facilitating credential-stuffing, password-spraying, and phishing attacks. Version 2.4.1 contains a patch.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-208"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58272.json"
}
References

Affected packages

Git / github.com/sync-in/server

Affected ranges

Type
GIT
Repo
https://github.com/sync-in/server
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
6797d21e6235ae1edcd2ea1021aaa4df55a80b0d
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "2.4.1"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v1.*
v1.1.0
v1.1.1
v1.10.0
v1.10.1
v1.11.0
v1.2.0
v1.2.1
v1.2.2
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.3.4
v1.3.5
v1.3.6
v1.3.7
v1.3.8
v1.3.9
v1.4.0
v1.5.0
v1.5.1
v1.5.2
v1.6.0
v1.6.1
v1.7.0
v1.8.0
v1.8.1
v1.9.0
v1.9.1
v1.9.2
v1.9.3
v1.9.4
v1.9.5
v1.9.6
v2.*
v2.0.0
v2.1.0
v2.2.0
v2.2.1
v2.3.0
v2.4.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-58272.json"