CVE-2021-3812 json
Cross-site Scripting (XSS) - Reflected in pi-hole/adminlte
published 2021-09-17 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-27066
- cvss
- 6.7
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 46%
- public exploits
- 0
- none known
Summary
adminlte is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Patch / fix
- pi-hole pi-hole/adminlte 5.6
Exploit prediction
0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- huntr.dev https://huntr.dev/bounties/875a6885-9a64-46f3-94ad-92f40f989200 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 6.7 | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Affected products
- pi-hole pi-hole/adminlte
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/pi-hole/adminlte/commit/f526716de7bb0fd382a64bcbbb33915c926f94bb
patch, third-party-advisory
-
huntr.dev
/bounties/875a6885-9a64-46f3-94ad-92f40f989200
exploit, issue-tracking, patch, third-party-advisory
Sources
- CVE List CVE-2021-3812
- NVD CVE-2021-3812
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.