UrBackup Server 2.5.31 allows brute-force enumeration of user accounts because a failure…
Priority LOW 31CWE-203Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-203.
Summary
UrBackup Server 2.5.31 allows brute-force enumeration of user accounts because a failure message confirms that a username is not valid.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00626 50th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-47102
- 2026-10-03 Alias added: GHSA-q8x9-r7fc-qfjv
- 2026-10-31 EPSS moved to the 50th–90th percentile
References
More Urbackup Server vulnerabilities
- TI-2017-12483 Cross - site scripting (XSS) vulnerability in UrBackup Server before 2.1.20 allows remote… CVSS 3.0MEDIUM 6.1
Sources
- CVE-2023-47102 · CVE Program
- CVE-2023-47102 · NVD
- FIRST EPSS
- GHSA-q8x9-r7fc-qfjv · GitHub Advisory Database · CC BY 4.0
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