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CVE-2026-23849: Observable Timing Discrepancy

🗓️ 19 Jan 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com

Unauthenticated username enumeration in File Browser prior to 2.55.0 via timing discrepancies.

Related
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-23849
19 Jan 202620:37
–attackerkb
cgr
Chainguard
CVE-2026-23849 vulnerabilities
28 Jan 202619:17
–cgr
circl
Circl
CVE-2026-23849
18 Jan 202609:35
–circl
cnnvd
CNNVD
FileBrowser security vulnerability
19 Jan 202600:00
–cnnvd
cve
CVE
CVE-2026-23849
19 Jan 202620:37
–cve
cvelist
Cvelist
CVE-2026-23849 File Browser vulnerable to Username Enumeration via Timing Attack in /api/login
19 Jan 202620:37
–cvelist
euvd
EUVD
EUVD-2026-3287
21 Jan 202601:02
–euvd
github
Github Security Blog
File Browser Vulnerable to Username Enumeration via Timing Attack in /api/login
21 Jan 202601:02
–github
nvd
NVD
CVE-2026-23849
19 Jan 202621:15
–nvd
osv
OSV
CGA-42F6-JVHV-6HRR
22 Jan 202611:25
–osv
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03 Feb 2026 00:00Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.15.3
EPSS0.00488
SSVC
0