CVE-2024-6581 — MEDIUM (CVSS 6.5) AI Security Vulnerability

Q: Is CVE-2024-6581 actively exploited?

No confirmed active exploitation of CVE-2024-6581 has been reported, but organizations should still patch proactively.

Q: How to fix CVE-2024-6581?

1) Patch: Pull commit 328b960 or upgrade lollms pip package beyond 9.5.1. 2) Immediate workaround: Block SVG MIME type uploads at nginx/Apache/reverse proxy layer — one-line config change. 3) Harden sanitization: Replace the blocklist-based sanitize_svg with DOMPurify configured with SVG namespace restrictions and a strict allowlist of safe SVG elements. 4) Add CSP: Implement Content-Security-Policy with default-src 'self', disabling inline scripts and restricting resource origins. 5) Detection: Query web server access logs for POST requests uploading .svg files; search stored SVGs for foreignObject, xlink, data:, javascript: strings. 6) Audit: Review all SVG files already stored on the instance for malicious payloads.

Q: What systems are affected by CVE-2024-6581?

This vulnerability affects the following AI/ML architecture patterns: Self-hosted LLM frontends and chat interfaces, Multi-user AI collaboration platforms, Agent frameworks with web UI, On-premise AI development workspaces.

Q: What is the CVSS score for CVE-2024-6581?

CVE-2024-6581 has a CVSS v3.1 base score of 6.5 (MEDIUM). The EPSS exploitation probability is 1.65%.

CISO Take

If your team runs self-hosted Lollms for AI-assisted collaboration, any authenticated user can upload a crafted SVG to trigger XSS against other users — including admins — potentially escalating to RCE via Lollms' local filesystem and API access. Patch immediately to the fixed commit (328b960) or disable SVG uploads at the reverse proxy. Low privilege requirement makes this a realistic insider or compromised-account threat vector in AI lab environments.

Risk Assessment

Rated CVSS 6.5 Medium but contextually elevated for AI teams using Lollms as a multi-user platform. The incomplete blocklist-based sanitize_svg — which only strips <script> and on* attributes — misses well-documented SVG XSS vectors: <foreignObject>, <use xlink:href>, <image href>, CSS expression attacks, and data: URI payloads. In self-hosted AI deployments where Lollms has filesystem and model config access, XSS-to-RCE is a realistic escalation chain. EPSS at 1.6% reflects limited public exploitation, but proof-of-concept SVG payloads for these bypass classes are trivially available.

Affected Systems

Package	Ecosystem	Vulnerable Range	Patched
lollms	pip	<= 9.5.1	No patch
72 Pushed 7d ago 33% patched ~1d to patch Full package profile →

Do you use lollms? You're affected.

Severity & Risk

CVSS 3.1

6.5 / 10

EPSS

1.6%

chance of exploitation in 30 days

Higher than 82% of all CVEs

Source: EPSS v3 — FIRST.org

Exploitation Status

Exploit Available

Exploitation: MEDIUM

Sophistication

Trivial

Exploitation Confidence

medium

○ CISA SSVC: Public PoC

Composite signal derived from CISA KEV, CISA SSVC, EPSS, trickest/cve, and Nuclei templates.

Attack Surface

AV Network

AC Low

PR Low

UI Required

S Changed

C Low

I Low

A Low

Recommended Action

1 step

1) Patch: Pull commit 328b960 or upgrade lollms pip package beyond 9.5.1. 2) Immediate workaround: Block SVG MIME type uploads at nginx/Apache/reverse proxy layer — one-line config change. 3) Harden sanitization: Replace the blocklist-based sanitize_svg with DOMPurify configured with SVG namespace restrictions and a strict allowlist of safe SVG elements. 4) Add CSP: Implement Content-Security-Policy with default-src 'self', disabling inline scripts and restricting resource origins. 5) Detection: Query web server access logs for POST requests uploading .svg files; search stored SVGs for foreignObject, xlink, data:, javascript: strings. 6) Audit: Review all SVG files already stored on the instance for malicious payloads.

CISA SSVC Assessment

Decision Track*

Exploitation poc

Automatable No

Technical Impact partial

Source: CISA Vulnrichment (SSVC v2.0). Decision based on the CISA Coordinator decision tree.

Classification

Code Execution Data Leakage Social Engineering Framework API AML.T0011 - User Execution AML.T0011.003 - Malicious Link AML.T0049 - Exploit Public-Facing Application AML.T0078 - Drive-by Compromise

Compliance Impact

This CVE is relevant to:

EU AI Act

Article 15 - Accuracy, robustness and cybersecurity

ISO 42001

A.6.2.5 - AI system security during design and implementation

NIST AI RMF

MANAGE-2.2 - Mechanisms to respond to and recover from AI risks

OWASP LLM Top 10

LLM02 - Insecure Output Handling LLM07 - Insecure Plugin Design

Frequently Asked Questions

What is CVE-2024-6581?

If your team runs self-hosted Lollms for AI-assisted collaboration, any authenticated user can upload a crafted SVG to trigger XSS against other users — including admins — potentially escalating to RCE via Lollms' local filesystem and API access. Patch immediately to the fixed commit (328b960) or disable SVG uploads at the reverse proxy. Low privilege requirement makes this a realistic insider or compromised-account threat vector in AI lab environments.

Is CVE-2024-6581 actively exploited?

No confirmed active exploitation of CVE-2024-6581 has been reported, but organizations should still patch proactively.

How to fix CVE-2024-6581?

1) Patch: Pull commit 328b960 or upgrade lollms pip package beyond 9.5.1. 2) Immediate workaround: Block SVG MIME type uploads at nginx/Apache/reverse proxy layer — one-line config change. 3) Harden sanitization: Replace the blocklist-based sanitize_svg with DOMPurify configured with SVG namespace restrictions and a strict allowlist of safe SVG elements. 4) Add CSP: Implement Content-Security-Policy with default-src 'self', disabling inline scripts and restricting resource origins. 5) Detection: Query web server access logs for POST requests uploading .svg files; search stored SVGs for foreignObject, xlink, data:, javascript: strings. 6) Audit: Review all SVG files already stored on the instance for malicious payloads.

What systems are affected by CVE-2024-6581?

This vulnerability affects the following AI/ML architecture patterns: Self-hosted LLM frontends and chat interfaces, Multi-user AI collaboration platforms, Agent frameworks with web UI, On-premise AI development workspaces.

What is the CVSS score for CVE-2024-6581?

CVE-2024-6581 has a CVSS v3.1 base score of 6.5 (MEDIUM). The EPSS exploitation probability is 1.65%.

Technical Details

NVD Description

A vulnerability in the discussion image upload function of the Lollms application, version v9.9, allows for the uploading of SVG files. Due to incomplete filtering in the sanitize_svg function, this can lead to cross-site scripting (XSS) vulnerabilities, which in turn pose a risk of remote code execution. The sanitize_svg function only removes script elements and 'on*' event attributes, but does not account for other potential vectors for XSS within SVG files. This vulnerability can be exploited when authorized users access a malicious URL containing the crafted SVG file.

Exploitation Scenario

An attacker with a free or low-privilege Lollms account uploads a crafted SVG to a discussion thread. The SVG uses a <foreignObject> tag embedding an HTML fragment with a script element — a vector ignored by sanitize_svg's blocklist. The attacker sends a targeted URL to an admin (via email, Slack, or the discussion thread itself). When the admin's browser renders the SVG, the XSS payload fires: it exfiltrates the admin's session cookie and any API keys visible in the page DOM to an attacker-controlled endpoint. With the admin session, the attacker gains full Lollms control, including access to local filesystem bindings, model configurations, and Lollms' code execution extensions — escalating from XSS to RCE.