Cyber Resilience

CVE-2023-50072

MediumPublic PoC

Published: 13 January 2024

Published
13 January 2024
Modified
03 June 2025
KEV Added
—
Patch
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CVSS Score v3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS Score 0.0370 88.2th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-50072 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Openkm Openkm. Its CVSS base score is 5.4 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Taint Shared Content (T1080); ranked in the top 11.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

A Stored Cross-Site Scripting (XSS) vulnerability exists in OpenKM version 7.1.40 (dbb6e88) With Professional Extension that allows an authenticated user to upload a note on a file which acts as a stored XSS payload. Any user who opens the note…

more

of a document file will trigger the XSS.

CWE(s)
CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1080 Taint Shared Content Lateral Movement
attack.mitre.org →
T1189 Drive-by Compromise Initial Access
Adversaries may gain access to a system through a user visiting a website over the normal course of browsing.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
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 allows authenticated attackers to inject malicious JavaScript into file notes in the OpenKM web application. This facilitates exploitation of a public-facing application (T1190), tainting shared content (T1080), drive-by compromise when users view notes (T1189), and stealing web session cookies via executed scripts (T1539).

Affected Assets

openkm
openkm
7.1.40

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