Reflected Cross-Site Scripting Vulnerability in Dolibarr by Dolibarr
CVE-2026-71503

5.1MEDIUM

Key Information:

Vendor

Dolibarr

Status
Dolibarr
Vendor
CVE Published:
24 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-71503?

Dolibarr versions prior to 24.0.0 introduce a reflected cross-site scripting (XSS) vulnerability in the extra fields administration template. The issue arises because the 'type' request parameter is displayed on the webpage without proper JavaScript-context encoding and lacks a Content-Security-Policy header, which can be exploited. An unauthenticated attacker could manipulate an authenticated administrator into visiting a specially crafted URL, potentially allowing the attacker to execute arbitrary JavaScript within the session. This vulnerability can lead to severe security risks, including the unauthorized creation of persistent administrator accounts.

Affected Version(s)

dolibarr 0

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.

CVE-2026-71503 - Proof of Concept

References

https://codeant.ai/security-research/cve-2026-71503-refle...
technical-descriptionexploit
https://github.com/Dolibarr/dolibarr/releases/tag/24.0.0
release-notes
https://github.com/Dolibarr/dolibarr/commit/3094b0aa3b500...
patch

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

CodeAnt AI Security Research
VulnCheck
.