CVE-2026-8318 — VectifyAI PageIndex Vulnerability
CVE-2026-8318 — A security flaw has been discovered in VectifyAI PageIndex up to f50e52975313c6716c02b20a119577a1929decba. Affected by this vulnerability is the function toc_transformer of the file pageindex/page_index.py of the component PDF Table of Contents Handler. The manipulation results in in
What This Means For You
- If your environment is affected by CWE-404, CWE-835, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-8318 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
2 rules · 6 SIEM formats2 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
VectifyAI PageIndex toc_transformer Infinite Loop - CVE-2026-8318
title: VectifyAI PageIndex toc_transformer Infinite Loop - CVE-2026-8318
id: scw-2026-05-11-ai-1
status: experimental
level: high
description: |
This rule detects attempts to exploit CVE-2026-8318 by targeting the toc_transformer function within the VectifyAI PageIndex component. The vulnerability, residing in pageindex/page_index.py, can lead to an infinite loop when exploited remotely. This detection focuses on the specific URI path and query parameter associated with the vulnerable function, indicating a potential exploit attempt.
author: SCW Feed Engine (AI-generated)
date: 2026-05-11
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-8318/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri|contains:
- '/pageindex/page_index.py'
cs-uri-query|contains:
- 'toc_transformer'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-8318 | vulnerability | CVE-2026-8318 |
| CWE-404 | weakness | CWE-404 |
| CWE-835 | weakness | CWE-835 |
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 11, 2026 at 22:16 UTC |
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