CVE-2024-25411
Published: 27 September 2024
Summary
CVE-2024-25411 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Flatpress Flatpress. Its CVSS base score is 6.1 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 4.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2024-25411 is a reflected cross-site scripting vulnerability in Flatpress version 1.3. The flaw resides in setup.php and is triggered when attacker-supplied input is inserted into the username parameter without adequate output encoding or sanitization, enabling arbitrary JavaScript or HTML execution under CWE-79.
An unauthenticated remote attacker can exploit the issue by crafting a malicious link or form submission that causes a victim to load the vulnerable setup page. Successful exploitation yields script execution in the context of the victim’s browser, with impacts limited to confidentiality and integrity but with scope change because the injected code can affect other application domains.
Public references include a GitHub pull request in the Flatpress repository that addresses the input-handling defect, along with a separate repository containing proof-of-concept material.
The current EPSS score stands at 0.1968 with an identical recorded peak, indicating moderate but stable exploitation interest since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-22742
Vulnerability details
A cross-site scripting (XSS) vulnerability in Flatpress v1.3 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the username parameter in setup.php.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
XSS in public-facing Flatpress CMS setup.php enables exploitation of public-facing applications (T1190), arbitrary JavaScript execution (T1059.007), and stealing web session cookies via injected scripts (T1539).
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.