CVE-2026-87820

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-09-09. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 5.3Exploit: Elevated riskExposed: 0

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

CyberPanel versions 2.4.3 through 2.4.5 expose unauthenticated AI Scanner debugging endpoints that disclose administrator usernames, API-key prefixes, scan identifiers, target domains, and account metadata. Unauthenticated attackers can enumerate panel administrators and recent scanner activity to inventory multi-tenant installations and facilitate follow-on attacks.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
55(Track)
EG Risk 55/100SSVC: 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
Severity53% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
57%
KEV
Not listed

Published

September 9, 2026

Last Modified

September 14, 2026

Advisory Details (3)

Auto-updated Sep 9, 2026
Patch available. Sources: github, github_commit.
generic

CyberPanel 2.4.3 through 2.4.5 Information Disclosure via AI Scanner | Advisories | VulnCheck

https://www.vulncheck.com/advisories/cyberpanel-2.4.3-through-2.4.5-information-disclosure-via-ai-scanner
github_commit

commit 20484fd1786a (usmannasir/cyberpanel)

Fix landed in usmannasir/cyberpanel commit 20484fd1786a — awaiting tagged release

https://github.com/usmannasir/cyberpanel/commit/20484fd1786a424054386e5d6290d66b47cab3a3
github Patch Available

CyberPanel AI Scanner debug endpoints expose administrator and scan metadata · Advisory · usmannasir/cyberpanel · GitHub

https://github.com/usmannasir/cyberpanel/security/advisories/GHSA-qmwq-9cc8-x6h2

Vendor Advisories for CVE-2026-87820(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 20× in last 7d / 49× 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 09:05 UTCEG score recompute
  2. 2026-09-25 09:05 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-24 09:39 UTCEG score recompute
  5. 2026-09-24 09:39 UTCGHSA enrichment
  6. 2026-09-23 17:54 UTCEPSS rescore
  7. 2026-09-23 10:12 UTCEG score recompute
  8. 2026-09-23 10:12 UTCGHSA enrichment
  9. 2026-09-22 16:01 UTCEPSS rescore
  10. 2026-09-22 10:45 UTCEG score recompute
  11. 2026-09-22 10:45 UTCGHSA enrichment
  12. 2026-09-21 21:09 UTCEPSS rescore
  13. 2026-09-21 11:19 UTCGHSA enrichment
  14. 2026-09-20 11:52 UTCEG score recompute
  15. 2026-09-20 11:52 UTCGHSA enrichment
  16. 2026-09-19 12:23 UTCEG score recompute
  17. 2026-09-19 12:23 UTCGHSA enrichment
  18. 2026-09-18 19:28 UTCEPSS rescore
  19. 2026-09-18 12:57 UTCEG score recompute
  20. 2026-09-18 12:57 UTCGHSA enrichment
  21. 2026-09-17 19:32 UTCEPSS rescore
  22. 2026-09-17 13:30 UTCEG score recompute
  23. 2026-09-17 13:30 UTCGHSA enrichment
  24. 2026-09-16 14:09 UTCEPSS rescore
  25. 2026-09-16 13:53 UTCEG score recompute
Show 24 more
  1. 2026-09-16 13:53 UTCGHSA enrichment
  2. 2026-09-16 05:15 UTCEPSS rescore
  3. 2026-09-15 13:58 UTCEG score recompute
  4. 2026-09-15 13:58 UTCGHSA enrichment
  5. 2026-09-15 03:12 UTCEPSS rescore
  6. 2026-09-14 14:31 UTCEG score recompute
  7. 2026-09-14 14:31 UTCGHSA enrichment
  8. 2026-09-14 13:36 UTCEG score recompute
  9. 2026-09-14 13:36 UTCGHSA enrichment
  10. 2026-09-13 18:32 UTCEG score recompute
  11. 2026-09-13 18:32 UTCGHSA enrichment
  12. 2026-09-12 19:05 UTCEG score recompute
  13. 2026-09-12 19:05 UTCGHSA enrichment
  14. 2026-09-11 19:38 UTCEG score recompute
  15. 2026-09-11 19:38 UTCGHSA enrichment
  16. 2026-09-11 14:53 UTCEPSS rescore
  17. 2026-09-11 14:53 UTCEPSS rescore
  18. 2026-09-10 20:12 UTCEG score recompute
  19. 2026-09-10 20:12 UTCGHSA enrichment
  20. 2026-09-09 20:44 UTCEG score recompute
  21. 2026-09-09 20:44 UTCGHSA enrichment
  22. 2026-09-09 12:25 UTCEG score recompute
  23. 2026-09-09 11:30 UTCEG score recompute
  24. 2026-09-09 11:29 UTCMITRE cvelistV5first tracked

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2026/CVE-2026-87820.yaml
    First seen Jan 1, 2026

    CyberPanel 2.4.3-2.4.5 - AI Scanner Debug Disclosure

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-87820?
CVE-2026-87820 is a medium vulnerability published on September 9, 2026. CyberPanel versions 2.4.3 through 2.4.5 expose unauthenticated AI Scanner debugging endpoints that disclose administrator usernames, API-key prefixes, scan identifiers, target domains, and account metadata. Unauthenticated attackers can enumerate panel administrators and recent scanner activity to…
When was CVE-2026-87820 disclosed?
CVE-2026-87820 was first published in the National Vulnerability Database on September 9, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-87820 actively exploited?
CVE-2026-87820 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 42.8% of all scored CVEs.
What is the CVSS score of CVE-2026-87820?
CVE-2026-87820 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-87820?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-87820, 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-2026-87820

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