CVE-2022-4821 json
FlatPress XML File Handler/MD File admin.uploader.php onupload cross site scripting
published 2022-12-28 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-52098
- cvss
- 2.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 46%
- public exploits
- 0
- none known
Summary
A vulnerability classified as problematic was found in FlatPress. This vulnerability affects the function onupload of the file admin/panels/uploader/admin.uploader.php of the component XML File Handler/MD File Handler. The manipulation leads to cross site scripting. The attack can be initiated remotely. The name of the patch is 3cc223dec5260e533a84b5cf5780d3a4fbf21241. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-217000.
Patch / fix
Exploit prediction
0.56% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 2.4 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N |
| CNA | 3.0 | 2.4 | CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- n/a FlatPress
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/flatpressblog/flatpress/commit/3cc223dec5260e533a84b5cf5780d3a4fbf21241
patch, third-party-advisory
-
github.com
/flatpressblog/flatpress/issues/178
issue-tracking, patch, third-party-advisory
-
vuldb.com
/?id.217000
vdb-entry, technical-description, third-party-advisory
-
vuldb.com
/?ctiid.217000
signature, permissions-required, third-party-advisory
Sources
- CVE List CVE-2022-4821
- NVD CVE-2022-4821
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.