What’s Vulnerable › Vulnerabilities

CVE-2026-71503: Dolibarr < 24.0.0 Reflected XSS via Extra Fields Administration Template

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-24 · updated 2026-10-12
• Weakness: CWE-79

Description

Dolibarr before 24.0.0 contains a reflected cross-site scripting vulnerability in the extra fields administration template where the type request parameter is echoed without JavaScript-context encoding into an inline script block and no Content-Security-Policy header is emitted. An unauthenticated attacker can cause an authenticated administrator to open a crafted URL to execute arbitrary JavaScript in that session and create a persistent administrator account.

Affected products

• dolibarr: before 24.0.0 — fixed in 24.0.0

How to fix

Upgrade to a fixed version: dolibarr 24.0.0. Check the vendor advisory for mitigations.

References

• https://codeant.ai/security-research/cve-2026-71503-reflected-xss-via-the-type-parameter
• https://github.com/Dolibarr/dolibarr/commit/3094b0aa3b500ff51020b660a7e66ffcb9d1cd91
• https://github.com/Dolibarr/dolibarr/releases/tag/24.0.0
• https://www.vulncheck.com/advisories/dolibarr-reflected-xss-via-extra-fields-administration-template

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