Cyber Resilience

CVE-2024-27095

Medium

Published: 10 July 2024

Published
10 July 2024
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 5.4 CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:N/A:N
EPSS Score 0.0028 51.7th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-27095 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Decidim Decidim. Its CVSS base score is 5.4 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Credentials from Web Browsers (T1555.003); ranked in the top 48.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Decidim is a participatory democracy framework. The admin panel is subject to potential XSS attach in case the attacker manages to modify some records being uploaded to the server. This vulnerability is fixed in 0.27.6 and 0.28.1.

CWE(s)
CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1555.003 Credentials from Web Browsers Credential Access
Adversaries may acquire credentials from web browsers by reading files specific to the target browser.
attack.mitre.org →
T1539 Steal Web Session Cookie Credential Access
An adversary may steal web application or service session cookies and use them to gain access to web applications or Internet services as an authenticated user without needing credentials.
attack.mitre.org →
Why these techniques?

Stored XSS in admin panel allows privileged attackers to inject malicious payloads into records via crafted uploads and blob IDs, executing JS in other admins' browsers upon viewing, enabling credential theft from web browsers and session cookies.

Affected Assets

decidim
decidim
0.28.0 · ≤ 0.27.6

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.

CA-8 Penetration Testing
addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

SI-10 Information Input Validation
addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

SI-15 Information Output Filtering
addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

References