# CVE-2026-71503: Dolibarr reflected XSS in extra fields administration

Source: https://junglewise.ai/threats/cve-2026-71503-dolibarr-reflected-xss-in-extra-fields-administration  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-24. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-71503 · Severity: medium · CVSS 6.1 · Published 2026-08-24

Dolibarr is an open-source business management software used by organizations to handle sales, accounting, and customer relationships. A reflected cross-site scripting vulnerability in the extra fields administration interface allows an attacker to trick an authenticated administrator into clicking a malicious link, which can execute arbitrary JavaScript code in the administrator's browser session and lead to the creation of unauthorized administrator accounts.

Technologies: [Dolibarr](https://junglewise.ai/threats/technologies/dolibarr). Vendors: [Dolibarr](https://junglewise.ai/threats/vendors/dolibarr).

## Quick answers

**Is CVE-2026-71503 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-71503 being exploited in the wild.

**How severe is CVE-2026-71503?** Medium severity, with a CVSS score of 6.1, published 24 August 2026.

**Which products and versions are affected?** Dolibarr before 24.0.0.

**Is there a fix for CVE-2026-71503?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-71503 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-71503?** Check whether you run Dolibarr at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This is a reflected XSS vulnerability in the extra fields administration template where the "type" request parameter is echoed into an inline script block without proper JavaScript-context encoding, and the application does not emit a Content-Security-Policy header to mitigate XSS attacks. An unauthenticated attacker can craft a URL containing malicious JavaScript that will execute when an authenticated administrator visits the link. The vulnerability allows an attacker to perform actions in the administrator's context, including account creation. The fix involves properly escaping JavaScript strings in the vulnerable template file.

## Affected products

- Dolibarr Dolibarr before 24.0.0

## Timeline

- 2026-08-24: disclosed

## References

- [https://codeant.ai/security-research/cve-2026-71503-reflected-xss-via-the-type-parameter](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/commit/3094b0aa3b500ff51020b660a7e66ffcb9d1cd91)

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