CVE-2026-71503

Summary

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 Software

Weaknesses

• CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

References

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

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