Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-71503

CVE-2026-71503MEDIUM

Dolibarr < 24.0.0 Reflected XSS via Extra Fields Administration Template

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   A   N   N   N    5.1   .0037   28.3     —

AFFECTED
  Product   Versions     Fixed
  dolibarr  unspecified  —

TIMELINE
  Aug 6   Reserved by VulnCheck
  Aug 24  EXPLOIT PUBLISHED — CVE-2026-71503 (dolibarr). Public exploit reference added.
  Aug 24  Published (CNA: VulnCheck)
  Aug 29  EXPLOIT PUBLISHED — CVE-2026-71503 (dolibarr). Public exploit reference added.
  Oct 1   EXPLOIT PUBLISHED — CVE-2026-71503 (dolibarr). Public exploit reference added.

CWE-79 · CNA: VulnCheck · CVSS v4.0 · 4 references · NVD status: Deferred

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.

Lifecycle

Complete event history — 5 events, chronological
Date	Event	Detail
August 6, 2026	Reserved	Reserved by VulnCheck
August 24, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-71503 (dolibarr). Public exploit reference added.
August 24, 2026	Published	Published (CNA: VulnCheck)
August 29, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-71503 (dolibarr). Public exploit reference added.
October 1, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-71503 (dolibarr). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Dolibarr	dolibarr	—	—	—

Weaknesses

CWE-79

References (4)

https://codeant.ai/security-research/cve-2026-71503-reflected-xss-via-the-type-parameter [technical-description, exploit]
https://github.com/Dolibarr/dolibarr/commit/3094b0aa3b500ff51020b660a7e66ffcb9d1cd91 [patch]
https://github.com/Dolibarr/dolibarr/releases/tag/24.0.0 [release-notes]
https://www.vulncheck.com/advisories/dolibarr-reflected-xss-via-extra-fields-administration-template [third-party-advisory]

Authoritative record: CVE-2026-71503 at cve.org

Vendors: dolibarr

Weaknesses: CWE-79

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-71503 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.