CVE-2026-86244

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory (severity: LOW) published 2026-09-07. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: Elevated riskExposed: 0

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

A security vulnerability has been detected in FastAdmin up to 1.2.0.20210401_beta. Affected is the function register/login of the file application/index/controller/User.php of the component User Controller. Such manipulation of the argument url leads to cross site scripting. The attack may be performed from remote. The exploit has been disclosed publicly and may be used. Upgrading to version 1.2.1.20210731_beta is able to address this issue. The name of the patch is b3d32e2bf3637488cfe2fc58a27a9d2475b2b51b. It is recommended to upgrade the affected component.

CVSS v3
4.3
EG Score
4.3(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity43% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
38%
KEV
Not listed

Published

September 7, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Sep 7, 2026
🔬 Proof of concept available. Upstream fix merged — awaiting tagged release. Sources: github_commit.
github_commit

commit b3d32e2bf363 (fastadminnet/fastadmin)

Fix landed in fastadminnet/fastadmin commit b3d32e2bf363 — awaiting tagged release

https://github.com/fastadminnet/fastadmin/commit/b3d32e2bf3637488cfe2fc58a27a9d2475b2b51b
generic🟡 PoC Available

FastAdmin Reflected XSS Vulnerability | Lhz's blog

https://lhzzz08.github.io/posts/cveapplication4/

Vendor Advisories for CVE-2026-86244(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 60× 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. 2026-09-25 03:12 UTCEG score recompute
  2. 2026-09-25 03:12 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-24 04:14 UTCEG score recompute
  5. 2026-09-24 04:14 UTCGHSA enrichment
  6. 2026-09-23 17:54 UTCEPSS rescore
  7. 2026-09-23 05:19 UTCEG score recompute
  8. 2026-09-23 05:19 UTCGHSA enrichment
  9. 2026-09-22 16:01 UTCEPSS rescore
  10. 2026-09-22 06:23 UTCEG score recompute
  11. 2026-09-22 06:23 UTCGHSA enrichment
  12. 2026-09-21 21:09 UTCEPSS rescore
  13. 2026-09-21 07:28 UTCEG score recompute
  14. 2026-09-21 07:28 UTCGHSA enrichment
  15. 2026-09-20 20:16 UTCEPSS rescore
  16. 2026-09-20 08:08 UTCEG score recompute
  17. 2026-09-20 08:08 UTCGHSA enrichment
  18. 2026-09-19 08:28 UTCEG score recompute
  19. 2026-09-19 08:28 UTCGHSA enrichment
  20. 2026-09-18 19:28 UTCEPSS rescore
  21. 2026-09-18 09:33 UTCEG score recompute
  22. 2026-09-18 09:33 UTCGHSA enrichment
  23. 2026-09-17 19:32 UTCEPSS rescore
  24. 2026-09-17 10:35 UTCEG score recompute
  25. 2026-09-17 10:35 UTCGHSA enrichment
Show 35 more
  1. 2026-09-16 14:09 UTCEPSS rescore
  2. 2026-09-16 11:39 UTCEG score recompute
  3. 2026-09-16 11:38 UTCGHSA enrichment
  4. 2026-09-16 05:15 UTCEPSS rescore
  5. 2026-09-15 12:40 UTCEG score recompute
  6. 2026-09-15 12:40 UTCGHSA enrichment
  7. 2026-09-15 03:12 UTCEPSS rescore
  8. 2026-09-15 03:12 UTCEPSS rescore
  9. 2026-09-14 13:41 UTCEG score recompute
  10. 2026-09-14 13:41 UTCGHSA enrichment
  11. 2026-09-13 14:33 UTCGHSA enrichment
  12. 2026-09-12 15:37 UTCEG score recompute
  13. 2026-09-12 15:37 UTCGHSA enrichment
  14. 2026-09-11 16:42 UTCEG score recompute
  15. 2026-09-11 16:42 UTCGHSA enrichment
  16. 2026-09-11 14:53 UTCEPSS rescore
  17. 2026-09-11 14:53 UTCEPSS rescore
  18. 2026-09-10 17:46 UTCEG score recompute
  19. 2026-09-10 17:46 UTCGHSA enrichment
  20. 2026-09-09 18:51 UTCEG score recompute
  21. 2026-09-09 18:50 UTCGHSA enrichment
  22. 2026-09-08 22:01 UTCEPSS rescore
  23. 2026-09-08 19:54 UTCEG score recompute
  24. 2026-09-08 19:54 UTCGHSA enrichment
  25. 2026-09-08 18:29 UTCNVD updateCVSS v4 → 2.1
  26. 2026-09-08 18:15 UTCEG score recompute
  27. 2026-09-08 18:15 UTCGHSA enrichment
  28. 2026-09-08 17:40 UTCMITRE cvelistV5CVSS v4 → 5.3
  29. 2026-09-08 14:06 UTCGHSA enrichment
  30. 2026-09-08 01:29 UTCEG score recompute
  31. 2026-09-08 01:29 UTCGHSA enrichment
  32. 2026-09-07 02:32 UTCEG score recompute
  33. 2026-09-07 02:29 UTCNVD updateCVSS v4 → 2.1
  34. 2026-09-07 01:44 UTCEG score recompute
  35. 2026-09-07 01:41 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-86244?
CVE-2026-86244 is a medium vulnerability published on September 7, 2026. A security vulnerability has been detected in FastAdmin up to 1.2.0.20210401beta. Affected is the function register/login of the file application/index/controller/User.php of the component User Controller. Such manipulation of the argument url leads to cross site scripting. The attack may be…
When was CVE-2026-86244 disclosed?
CVE-2026-86244 was first published in the National Vulnerability Database on September 7, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-86244 actively exploited?
CVE-2026-86244 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 62.0% of all scored CVEs.
What is the CVSS score of CVE-2026-86244?
CVE-2026-86244 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-86244?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-86244, 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-2026-86244

Explore →

Is Your Infrastructure Affected by CVE-2026-86244?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs