CVE-2002-1820 json
register.php in Ultimate PHP Board (UPB) 1.0 and 1.0b uses an administrative account Admin with a capital "A," but allows a remote attacker…
published 2002-12-31 23 y ago modified 2026-06-16 4 mo ago also EUVD-2002-1799
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.4%
- EPSS 2.4% chance of exploitation in 30 days, percentile 83%
- public exploits
- 0
- none known
Summary
register.php in Ultimate PHP Board (UPB) 1.0 and 1.0b uses an administrative account Admin with a capital "A," but allows a remote attacker to impersonate the administrator by registering an account name of admin with a lower case "a."
Patch / fix
Exploit prediction
2.38% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-178 Improper Handling of Case Sensitivity
References
-
iss.net
/security_center/static/9972.php
vdb-entry, broken-link, patch
-
securityfocus.com
/archive/1/289417
mailing-list, broken-link, third-party-advisory, vdb-entry
-
securityfocus.com
/bid/5580
vdb-entry, broken-link, third-party-advisory
Sources
- CVE List CVE-2002-1820
- NVD CVE-2002-1820
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.