CVE-2026-18356 json
Limit Login Attempts Reloaded < 3.3.5 - Username Denylist Bypass via Case Variant and Account Email
published 2026-08-21 2 mo ago modified 2026-10-16 23 d ago also EUVD-2026-63912
- cvss
- 3.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 17%
- public exploits
- 0
- none known
Summary
The Limit Login Attempts Reloaded WordPress plugin before 3.3.5 does not compare logins against its username denylist case-insensitively and does not account for the account's email address, allowing an account an administrator intended to block from logging in to authenticate anyway.
Patch / fix
- Unknown Limit Login Attempts Security 3.3.5
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/fbcf5a9a-f204-49b8-aa80-748a8a7b5245/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N |
Affected products
- Unknown Limit Login Attempts Security
Classification
- Weakness
-
- CWE-184 Incomplete List of Disallowed Inputs
- Technology feeds
References
-
wpscan.com
/vulnerability/fbcf5a9a-f204-49b8-aa80-748a8a7b5245/
exploit, vdb-entry, technical-description
Sources
- CVE List CVE-2026-18356
- NVD CVE-2026-18356
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.