CVE-2026-90810

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-09-14. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: Elevated riskExposed: 0

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

A security flaw has been discovered in cosmicstack-labs mercury-agent up to 1.1.13. The impacted element is the function PermissionManager.checkShellCommand of the file mercury-agent/src/capabilities/permissions.ts of the component Shell Command Permission Check. Performing a manipulation results in improper authorization. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

CVSS v3
6.3
EG Score
6.3(high)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity63% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

September 14, 2026

Last Modified

September 15, 2026

Advisory Details (2)

Auto-updated Sep 14, 2026
No patch confirmed yet.
generic

GitHub - cosmicstack-labs/mercury-agent: Soul-driven AI agent with permission-hardened tools, token budgets, and multi-channel access. Runs 24/7 from CLI or Telegram. · GitHub

https://github.com/cosmicstack-labs/mercury-agent/
generic

[Security] Mercury `run_command` safe-read approval bypass via `find -exec` · Issue #101 · cosmicstack-labs/mercury-agent · GitHub

https://github.com/cosmicstack-labs/mercury-agent/issues/101

Vendor Advisories for CVE-2026-90810(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 24× in last 7d / 24× 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. 2026-09-20 08:32 UTCEG score recompute
  2. 2026-09-20 08:32 UTCGHSA enrichment
  3. 2026-09-19 10:00 UTCEG score recompute
  4. 2026-09-19 10:00 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 11:29 UTCEG score recompute
  7. 2026-09-18 11:29 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-17 12:57 UTCEG score recompute
  10. 2026-09-17 12:57 UTCGHSA enrichment
  11. 2026-09-16 14:09 UTCEPSS rescore
  12. 2026-09-16 14:04 UTCEG score recompute
  13. 2026-09-16 14:04 UTCGHSA enrichment
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 15:32 UTCEG score recompute
  16. 2026-09-15 15:32 UTCGHSA enrichment
  17. 2026-09-15 15:31 UTCNVD updateCVSS v4 → 2.1
  18. 2026-09-15 15:01 UTCEG score recompute
  19. 2026-09-15 15:01 UTCGHSA enrichment
  20. 2026-09-15 14:57 UTCMITRE cvelistV5CVSS v4 → 5.3
  21. 2026-09-14 19:19 UTCEG score recompute
  22. 2026-09-14 19:18 UTCNVD updateCVSS v4 → 2.1
  23. 2026-09-14 18:40 UTCEG score recompute
  24. 2026-09-14 18:39 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-90810?
CVE-2026-90810 is a medium vulnerability published on September 14, 2026. A security flaw has been discovered in cosmicstack-labs mercury-agent up to 1.1.13. The impacted element is the function PermissionManager.checkShellCommand of the file mercury-agent/src/capabilities/permissions.ts of the component Shell Command Permission Check. Performing a manipulation results…
When was CVE-2026-90810 disclosed?
CVE-2026-90810 was first published in the National Vulnerability Database on September 14, 2026, with the most recent update on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-90810 actively exploited?
CVE-2026-90810 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 88.6% of all scored CVEs.
What is the CVSS score of CVE-2026-90810?
CVE-2026-90810 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-90810?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-90810, 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-2026-90810

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