Signal is active with 3 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain a Stored Cross-Site Scripting (XSS) vulnerability where the frontend's MdRenderer.vue component parses custom <iframe_render> tags from LLM responses or Application Prologue configurations, bypassing standard Markdown sanitization and XSS filtering. The unsanitized HTML content is passed to the IframeRender.vue component, which renders it directly into an <iframe> via the srcdoc attribute configured with sandbox="allow-scripts allow-same-origin". This can be a dangerous combination, allowing injected scripts to escape the iframe and execute JavaScript in the parent window using window.parent. Since the Prologue is rendered for any user visiting an application's chat interface, this results in a high-impact Stored XSS that can lead to session hijacking, unauthorized actions, and sensitive data exposure. This issue has been fixed in version 2.8.0.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
⚡ New CVE Alert: CVE-2026-39426 📊 Severity: 5.1 🚨 Risk Level: Medium 🧩 Affects: Multiple / Unspecified Products Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-39426 #CVE-2026-39426 #CVE #Medium #CyberSecurity #InfoSec https://t.co/57QkZWh7Xm
Post summary
A brief CVE alert stating severity and general product impact, with no additional technical details, PoC, exploit, or patch information.
CVE-2026-39426 MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain a Stored Cross-Site Scripting (XSS) vulnerability where the frontend's MdRendere… https://www.cve.org/CVERecord?id=CVE-2026-39426
Post summary
The post announces CVE‑2026‑39426, noting a stored XSS flaw in MaxKB’s MdRendere component affecting versions 2.7.1 and earlier.
CVE-2026-39426 Stored Cross-Site Scripting in MaxKB Versions 2.7.1 and Below via IframeRender https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-39426
Post summary
The content reports a new stored XSS vulnerability (CVE‑2026‑39426) affecting MaxKB 2.7.1 and earlier, via IframeRender, but does not mention a PoC, exploit, patch, or active exploitation.
1 of 1 entries
| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | maxkb | maxkb | - | - | - |