CVE-2026-9155

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.8Exploit: NoneExposed: 0

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

OS Command Injection vulnerability in Rapid7 InsightConnect Sed Plugin on Linux allows authenticated attackers to execute arbitrary OS commands via the expression parameter due to insufficient input validation.

CVSS v3
8.8
EG Score
8.8(high)
EPSS
55.9%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 27, 2026

Advisory Details (1)

Auto-updated Jun 25, 2026
No patch confirmed yet.
generic

Rapid7 Extensions

https://extensions.rapid7.com/extension/sed

Vendor Advisories for CVE-2026-9155(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 33× 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. 2026-07-06 20:02 UTCEG score recompute
  2. 2026-07-06 20:01 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 07:41 UTCEG score recompute
  5. 2026-07-06 07:41 UTCGHSA enrichment
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 19:22 UTCEG score recompute
  8. 2026-07-05 19:22 UTCGHSA enrichment
  9. 2026-07-05 07:07 UTCEG score recompute
  10. 2026-07-05 07:07 UTCGHSA enrichment
  11. 2026-07-05 02:31 UTCEPSS rescore
  12. 2026-07-04 18:48 UTCEG score recompute
  13. 2026-07-04 18:48 UTCGHSA enrichment
  14. 2026-07-04 06:31 UTCEPSS rescore
  15. 2026-07-04 06:31 UTCEPSS rescore
  16. 2026-07-04 06:31 UTCEG score recompute
  17. 2026-07-04 06:30 UTCGHSA enrichment
  18. 2026-07-03 18:14 UTCEG score recompute
  19. 2026-07-03 18:14 UTCGHSA enrichment
  20. 2026-07-03 05:58 UTCEG score recompute
  21. 2026-07-03 05:57 UTCGHSA enrichment
  22. 2026-07-02 17:42 UTCEG score recompute
  23. 2026-07-02 17:42 UTCGHSA enrichment
  24. 2026-07-02 05:27 UTCEG score recompute
  25. 2026-07-02 05:27 UTCGHSA enrichment
Show 35 more
  1. 2026-07-01 17:13 UTCEG score recompute
  2. 2026-07-01 17:13 UTCGHSA enrichment
  3. 2026-07-01 15:07 UTCEPSS rescore
  4. 2026-07-01 04:59 UTCEG score recompute
  5. 2026-07-01 04:59 UTCGHSA enrichment
  6. 2026-06-30 23:22 UTCEPSS rescore
  7. 2026-06-30 16:44 UTCEG score recompute
  8. 2026-06-30 16:44 UTCGHSA enrichment
  9. 2026-06-30 04:30 UTCEG score recompute
  10. 2026-06-30 04:30 UTCGHSA enrichment
  11. 2026-06-29 16:16 UTCEG score recompute
  12. 2026-06-29 16:15 UTCGHSA enrichment
  13. 2026-06-29 14:06 UTCEPSS rescore
  14. 2026-06-29 04:01 UTCEG score recompute
  15. 2026-06-29 04:01 UTCGHSA enrichment
  16. 2026-06-28 15:47 UTCEG score recompute
  17. 2026-06-28 15:47 UTCGHSA enrichment
  18. 2026-06-28 14:07 UTCEPSS rescore
  19. 2026-06-28 04:56 UTCEPSS rescore
  20. 2026-06-28 03:32 UTCEG score recompute
  21. 2026-06-28 03:32 UTCGHSA enrichment
  22. 2026-06-27 15:18 UTCEG score recompute
  23. 2026-06-27 15:18 UTCGHSA enrichment
  24. 2026-06-27 03:08 UTCEPSS rescore
  25. 2026-06-27 03:04 UTCEG score recompute
  26. 2026-06-27 03:03 UTCGHSA enrichment
  27. 2026-06-26 14:48 UTCEG score recompute
  28. 2026-06-26 14:48 UTCGHSA enrichment
  29. 2026-06-26 02:35 UTCEG score recompute
  30. 2026-06-26 02:35 UTCGHSA enrichment
  31. 2026-06-25 14:21 UTCEG score recompute
  32. 2026-06-25 14:21 UTCGHSA enrichment
  33. 2026-06-25 13:50 UTCEPSS rescore
  34. 2026-06-25 02:07 UTCEG score recompute
  35. 2026-06-25 02:04 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-9155?
CVE-2026-9155 is a high vulnerability published on June 25, 2026. OS Command Injection vulnerability in Rapid7 InsightConnect Sed Plugin on Linux allows authenticated attackers to execute arbitrary OS commands via the expression parameter due to insufficient input validation.
When was CVE-2026-9155 disclosed?
CVE-2026-9155 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on June 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9155 actively exploited?
CVE-2026-9155 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 55.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-9155?
CVE-2026-9155 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-9155?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9155, 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-2026-9155

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