Cross Site Scripting Vulnerability in Kotaemon by Cinnamon
CVE-2025-56526

6.1MEDIUM

Key Information:

Vendor

Cinnamon

Status
Kotaemon
Vendor
CVE Published:
18 November 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-56526?

A Cross Site Scripting (XSS) vulnerability exists in Kotaemon version 0.11.0, allowing attackers to execute arbitrary code on user systems. This can be accomplished by delivering specially crafted PDF files that exploit unsanitized content rendering. If executed, this vulnerability poses a significant security risk, enabling unauthorized access and data manipulation.

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Deploy the Patch

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

Kotaemon-CVE-2025-56526-56527-disclosure
Created by HanTul

References

https://github.com/Cinnamon/kotaemon/commit/37cdc28
https://github.com/Cinnamon/kotaemon
https://skinny-exoplanet-584.notion.site/Stored-XSS-via-U...

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability Reserved

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