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CVE-2022-4821— FlatPress XML File Handler/MD File admin.uploader.php onupload cross site scripting

Quick assessment

Affected
n/a FlatPress
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FlatPress是FlatPress社区的一个基于Php无需数据库支持的博客建站系统。 FlatPress存在跨站脚本漏洞，该漏洞源于组件XML File Handler/MD File Handler中admin/panels/uploader/admin.uploader.php文件的上传功能存在问题，会导致跨站脚本。

CVSS 2.4 · Low EPSS 0.53% · P44
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I. Basic Information for CVE-2022-4821

Vulnerability Information
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Vulnerability Title
FlatPress XML File Handler/MD File admin.uploader.php onupload cross site scripting
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
FlatPress 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FlatPress是FlatPress社区的一个基于Php无需数据库支持的博客建站系统。 FlatPress存在跨站脚本漏洞，该漏洞源于组件XML File Handler/MD File Handler中admin/panels/uploader/admin.uploader.php文件的上传功能存在问题，会导致跨站脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- FlatPress n/a -

II. Public POCs for CVE-2022-4821

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III. Intelligence Information for CVE-2022-4821

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Patches & Fixes for CVE-2022-4821 (1)

Vendor Advisories for CVE-2022-4821 (1)

Other References for CVE-2022-4821 (1)

Same Patch Batch · n/a · 2022-12-28 · 8 CVEs total

CVE-2018-25057 5.5 MEDIUM simple_php_link_shortener index.php sql injection
CVE-2022-4820 3.5 LOW FlatPress Admin Area admin.entry.list.php cross site scripting
CVE-2018-25056 3.5 LOW yolapi metadata.py render_description cross site scripting
CVE-2018-25055 3.5 LOW FarCry Solr Pro Plugin Search solrProSearch.cfc cross site scripting
CVE-2018-25052 3.5 LOW Catalyst-Plugin-Session Session ID Session.pm _load_sessionid cross site scripting
CVE-2022-4822 2.4 LOW FlatPress Setup main.lib.php cross site scripting
CVE-2022-4819 2.4 LOW HotCRP cross site scripting

IV. Related Vulnerabilities

Same product: FlatPress
Same vendor: n/a
Same weakness: CWE-79

V. Comments for CVE-2022-4821

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