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CVE-2024-4023

Stored XSS in flatpressblog/flatpress

Published: Mar 20, 2025Updated: Jun 23, 2025 Sources: CVE List NVDCWE-79
8.1HIGH
NVD MITRE
EPSS Score
0.7%
Top 50.0%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

A stored cross-site scripting (XSS) vulnerability exists in flatpressblog/flatpress version 1.3. When a user uploads a file with a `.xsig` extension and directly accesses this file, the server responds with a Content-type of application/octet-stream, leading to the file being processed as an HTML file. This allows an attacker to execute arbitrary JavaScript code, which can be used to steal user cookies, perform HTTP requests, and access content of the same origin.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:HI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-79

Affected Products

flatpressblog/flatpressflatpressblog
On-prem
Web & CMS Plugins / cms-core
flatpressflatpress
On-prem
Web & CMS Plugins / cms-core
flatpressblogoss-projectWeb & CMS Pluginsaka flatpressblog, flatpress
flatpressoss-projectWeb & CMS Plugins

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
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References

https://huntr.com/bounties/ed803c13-0858-4c22-93ba-bf2384ab1e9d
huntr.com
https://github.com/flatpressblog/flatpress/commit/3c9cc69364a45fd3f92d4bd606344b5dd1205d6a
github.com

Timeline

Published
Mar 20, 2025
Last Updated
Jun 23, 2025

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