Cyber Resilience

CVE-2024-40508

HighPublic PoC

Published: 26 September 2024

Published
26 September 2024
Modified
23 April 2025
KEV Added
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Patch
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CVSS Score v3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
EPSS Score 0.0777 92.1th percentile
Risk Priority 19 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-40508 is a high-severity Cross-site Scripting (CWE-79) vulnerability in Openpetra Openpetra. Its CVSS base score is 7.3 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Browser Session Hijacking (T1185); ranked in the top 7.9% 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-2024-40508 is a cross-site scripting vulnerability (CWE-79) affecting openPetra version 2023.02. The flaw resides in the serverMConference.asmx function and carries a CVSS 3.1 score of 7.3, indicating network attack vector, low complexity, and no requirements for authentication or user interaction.

A remote attacker can supply malicious input to the affected endpoint to obtain sensitive information, producing limited effects on confidentiality, integrity, and availability. Exploitation requires no privileges and can be performed directly over the network.

Public references consist of the openpetra GitHub repository and a separate disclosure repository; neither supplies patch information or mitigation steps. The EPSS score has remained flat at 0.0777 with no material rise since disclosure.

EU & UK References

Vulnerability details

Cross Site Scripting vulnerability in openPetra v.2023.02 allows a remote attacker to obtain sensitive information via the serverMConference.asmx function.

CWE(s)
CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1185 Browser Session Hijacking Collection
Adversaries may take advantage of security vulnerabilities and inherent functionality in browser software to change content, modify user-behaviors, and intercept information as part of various browser session hijacking techniques.
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 →
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 →
Why these techniques?

Reflected XSS in a public-facing web service enables arbitrary JavaScript execution in authenticated users' browsers via crafted parameters, allowing theft of session cookies (document.cookie) and browser-stored credentials.

Affected Assets

openpetra
openpetra
2023.02

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