CVE-2026-85694

LaVague 0.2.35 Remote Code Execution via eval extraction

Published Sep 4, 2026 CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed

Description

LaVague 0.2.35 contains a remote code execution vulnerability in PythonFromMarkdownExtractor.extract_as_object that evaluates untrusted language model output derived from web page content. Attackers can inject malicious Python code through web pages using indirect prompt injection to execute arbitrary code on the operator's host without review.

Analysis

Technical impact

The vulnerability in LaVague 0.2.35 occurs in the PythonFromMarkdownExtractor.extract_as_object function, which evaluates Python code that originates from language model output derived from web page content. This improper execution of untrusted code (CWE-94) allows an attacker to run arbitrary Python on the host that hosts LaVague, leading to complete compromise of confidentiality, integrity, and availability.

Affected Systems

The affected product is LaVague 0.2.35, developed by lavague-ai. Users running this specific version face the risk. No other versions are listed as affected, but the vulnerability description references the same function across the code base.

Risk and Exploitability

The CVSS score of 9.2 indicates critical severity, and although an EPSS score is not available, the lack of a patch and the open-source nature heighten the risk. Attackers can exploit the flaw by crafting malicious web pages that reference the extractor, using indirect prompt injection to insert Python code that will be executed on the operator’s host without any review. The vulnerability is remote and exploitable by anyone able to influence the content processed by the extractor.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

lavague-ai

LaVague

unaffected

Version	Status	Constraints
`0`	affected	≤ 0.2.35

No data.

Vendor Product Versions

Lavague

Version	Status	Scheme	Platform
`[0,0.2.35]`	affected	semver	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Upgrade LaVague to a patched version where the PythonFromMarkdownExtractor no longer executes untrusted content.
If an immediate patch is unavailable, disable or remove the vulnerable extractor function, or configure the system to run LaVague in a sandbox that prevents arbitrary code execution.
Implement content filtering or strict source controls to block malicious web pages before they reach the extractor, and monitor execution logs for suspicious activity.

Generated by OpenCVE AI on September 4, 2026 at 15:42 UTC.

Tracking

Advisories

No advisories available

Metrics

Attack Vector Network

Attack Complexity High

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.942% probability within 30 days)

Exploitation poc

Automatable no

Technical Impact total

References

Link	Providers
https://github.com/lavague-ai/LaVague
https://github.com/lavague-ai/LaVague/blob/9024bb83/lavague-core/lavague/core/extractors.py
https://github.com/lavague-ai/LaVague/issues/650
https://www.vulncheck.com/advisories/lavague-0.2.35-remote-code-execution-via-eval-extraction

History

Sep 9, 2026 10:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Sep 7, 2026 8:30 AM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Lavague Lavague lavague
Vendors & Products		Lavague Lavague lavague

Sep 4, 2026 2:45 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		LaVague 0.2.35 contains a remote code execution vulnerability in PythonFromMarkdownExtractor.extract_as_object that evaluates untrusted language model output derived from web page content. Attackers can inject malicious Python code through web pages using indirect prompt injection to execute arbitrary code on the operator's host without review.
Title		LaVague 0.2.35 Remote Code Execution via eval extraction
Weaknesses		CWE-94
References		https://github.com/lavague-ai/LaVague https://github.com/lavague-ai/LaVague/blob/9024bb83/lavague-core/lavague/core/extractors.py https://github.com/lavague-ai/LaVague/issues/650 https://www.vulncheck.com/advisories/lavague-0.2.35-remote-code-execution-via-eval-extraction
Metrics		cvssV3_1 `{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}` cvssV4_0 `{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}`