CVE-2026-71503

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory published 2026-08-24. the CNA's CVSS baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 4 sources updated this weekElevated
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.1
EG Score
6.1(high)
EG Risk
43(Track)
EG Risk 43/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity61% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

August 24, 2026

Last Modified

August 29, 2026

Advisory Details (4)

Auto-updated Aug 24, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github_commit.
generic

Dolibarr < 24.0.0 Reflected XSS via Extra Fields Administration Template | Advisories | VulnCheck

https://www.vulncheck.com/advisories/dolibarr-reflected-xss-via-extra-fields-administration-template
github_release Patch Available

24.0.0

Patch available: Dolibarr/dolibarr 24.0.0

https://github.com/Dolibarr/dolibarr/releases/tag/24.0.0
github_commit Patch Available

commit 3094b0aa3b50 (Dolibarr/dolibarr)

Patch available: Dolibarr/dolibarr 24.0.0 (contains commit 3094b0aa3b50)

https://github.com/Dolibarr/dolibarr/commit/3094b0aa3b500ff51020b660a7e66ffcb9d1cd91
generic🟡 PoC Available

CVE-2026-71503: Dolibarr Reflected XSS to Administrator Account Takeover

https://codeant.ai/security-research/cve-2026-71503-reflected-xss-via-the-type-parameter

Vendor Advisories for CVE-2026-71503(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 18× in last 7d / 18× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-29 12:00 UTCEG score recompute
  3. 2026-08-29 12:00 UTCGHSA enrichment
  4. 2026-08-28 21:42 UTCEPSS rescore
  5. 2026-08-28 18:23 UTCGHSA enrichment
  6. 2026-08-27 18:51 UTCEG score recompute
  7. 2026-08-27 18:51 UTCGHSA enrichment
  8. 2026-08-26 19:19 UTCEG score recompute
  9. 2026-08-26 19:19 UTCGHSA enrichment
  10. 2026-08-26 14:47 UTCEPSS rescore
  11. 2026-08-25 19:52 UTCEG score recompute
  12. 2026-08-25 19:52 UTCGHSA enrichment
  13. 2026-08-25 13:49 UTCEPSS rescore
  14. 2026-08-24 20:26 UTCEG score recompute
  15. 2026-08-24 20:02 UTCEG score recompute
  16. 2026-08-24 19:24 UTCEG score recompute
  17. 2026-08-24 19:07 UTCEG score recompute
  18. 2026-08-24 19:06 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-71503?
CVE-2026-71503 is a medium vulnerability published on August 24, 2026. 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…
When was CVE-2026-71503 disclosed?
CVE-2026-71503 was first published in the National Vulnerability Database on August 24, 2026, with the most recent update on August 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71503 actively exploited?
CVE-2026-71503 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 88.8% of all scored CVEs.
What is the CVSS score of CVE-2026-71503?
CVE-2026-71503 has a CVSS v4.0 base score of 6.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-71503?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71503, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-71503

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