CVE-2026-38820

HIGHPre-NVD 8.38.3—
EchelonGraph scoreHIGH confidence

Score 8.3 from GitHub Security Advisory (severity: HIGH) published 2026-08-28. a secondary CVSS source baseline 8.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 8.3Exploit: None knownExposed: 0

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

openNDS before 11.0.0 is susceptible to unauthenticated OS command execution via shell command injection through the fas query parameter on the /opennds_preauth/ endpoint because of libopennds.sh.

CVSS v3
8.3
EG Score
8.3(high)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity83% × 45%
Exploitation2% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
76%
KEV
Not listed

Published

August 28, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Aug 28, 2026
Patch available. Sources: github_commit.
github_commit Patch Available

commit 8c03750d9a17 (openNDS/openNDS)

Patch available: openNDS/openNDS v11.0.0 (contains commit 8c03750d9a17)

https://github.com/openNDS/openNDS/commit/8c03750d9a17d601fa7bd03ae7cde20c7c8d1252

Vendor Advisories for CVE-2026-38820(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 14× in last 7d / 14× 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 19:36 UTCGHSA enrichment
  3. 2026-08-29 07:59 UTCEG score recompute
  4. 2026-08-29 07:59 UTCGHSA enrichment
  5. 2026-08-28 21:41 UTCEPSS rescore
  6. 2026-08-28 20:22 UTCEG score recompute
  7. 2026-08-28 20:22 UTCGHSA enrichment
  8. 2026-08-28 19:45 UTCEG score recompute
  9. 2026-08-28 19:45 UTCGHSA enrichment
  10. 2026-08-28 13:55 UTCEG score recompute
  11. 2026-08-28 13:55 UTCGHSA enrichment
  12. 2026-08-28 02:18 UTCEG score recompute
  13. 2026-08-28 02:09 UTCEG score recompute
  14. 2026-08-28 02:07 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-38820?
CVE-2026-38820 is a high vulnerability published on August 28, 2026. openNDS before 11.0.0 is susceptible to unauthenticated OS command execution via shell command injection through the fas query parameter on the /opennds_preauth/ endpoint because of libopennds.sh.
When was CVE-2026-38820 disclosed?
CVE-2026-38820 was first published in the National Vulnerability Database on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-38820 actively exploited?
CVE-2026-38820 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 24.2% of all scored CVEs.
What is the CVSS score of CVE-2026-38820?
CVE-2026-38820 has a CVSS v3 base score of 8.3 (NVD).
How do I remediate CVE-2026-38820?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-38820, 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

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