CVE-2026-81941

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-11. 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
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

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

IBM Langflow OSS 1.0.0 through 1.11.5 allows an authenticated non-administrative user could execute arbitrary operating system commands on the server at the privilege level of the application process by constructing a flow with an MCP Tools component configured to use a local stdio subprocess transport. This bypasses both the LANGFLOW_CUSTOM_COMPONENT_ADMIN_ONLY and LANGFLOW_BLOCK_CODE_INTERPRETER_COMPONENTS server-side controls intended to prevent exactly this class of access. Successful exploitation could lead to arbitrary command execution, sensitive data exposure (including credentials from the process environment), file system modification, and lateral movement to services reachable from the server.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

September 10, 2026

Last Modified

September 16, 2026

Advisory Details (1)

Auto-updated Sep 10, 2026
No patch confirmed yet.
generic

Security Bulletin: Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards

https://www.ibm.com/support/pages/node/7286666

Vendor Advisories for CVE-2026-81941(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 28× in last 7d / 67× 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 07:24 UTCGHSA enrichment
  2. 2026-09-24 19:41 UTCEG score recompute
  3. 2026-09-24 19:41 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 07:59 UTCGHSA enrichment
  6. 2026-09-23 20:17 UTCEG score recompute
  7. 2026-09-23 20:17 UTCGHSA enrichment
  8. 2026-09-23 17:54 UTCEPSS rescore
  9. 2026-09-23 08:36 UTCGHSA enrichment
  10. 2026-09-22 20:54 UTCEG score recompute
  11. 2026-09-22 20:54 UTCGHSA enrichment
  12. 2026-09-22 16:01 UTCEPSS rescore
  13. 2026-09-22 09:12 UTCGHSA enrichment
  14. 2026-09-21 21:30 UTCEG score recompute
  15. 2026-09-21 21:30 UTCGHSA enrichment
  16. 2026-09-21 21:09 UTCEPSS rescore
  17. 2026-09-21 09:48 UTCGHSA enrichment
  18. 2026-09-20 22:07 UTCEG score recompute
  19. 2026-09-20 22:07 UTCGHSA enrichment
  20. 2026-09-20 20:16 UTCEPSS rescore
  21. 2026-09-20 10:25 UTCGHSA enrichment
  22. 2026-09-19 22:42 UTCEG score recompute
  23. 2026-09-19 22:42 UTCGHSA enrichment
  24. 2026-09-19 11:00 UTCGHSA enrichment
  25. 2026-09-18 23:18 UTCEG score recompute
Show 42 more
  1. 2026-09-18 23:18 UTCGHSA enrichment
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 11:37 UTCGHSA enrichment
  4. 2026-09-17 23:54 UTCEG score recompute
  5. 2026-09-17 23:54 UTCGHSA enrichment
  6. 2026-09-17 12:08 UTCGHSA enrichment
  7. 2026-09-17 00:26 UTCEG score recompute
  8. 2026-09-17 00:26 UTCGHSA enrichment
  9. 2026-09-16 14:08 UTCEPSS rescore
  10. 2026-09-16 12:44 UTCEG score recompute
  11. 2026-09-16 12:44 UTCGHSA enrichment
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-16 01:02 UTCGHSA enrichment
  14. 2026-09-15 14:14 UTCEG score recompute
  15. 2026-09-15 14:14 UTCGHSA enrichment
  16. 2026-09-15 03:12 UTCEPSS rescore
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 02:32 UTCGHSA enrichment
  19. 2026-09-14 14:50 UTCGHSA enrichment
  20. 2026-09-14 03:08 UTCEG score recompute
  21. 2026-09-14 03:08 UTCGHSA enrichment
  22. 2026-09-13 15:27 UTCGHSA enrichment
  23. 2026-09-13 03:45 UTCGHSA enrichment
  24. 2026-09-12 16:02 UTCEG score recompute
  25. 2026-09-12 16:02 UTCGHSA enrichment
  26. 2026-09-12 04:20 UTCEG score recompute
  27. 2026-09-12 04:20 UTCGHSA enrichment
  28. 2026-09-12 03:59 UTCEG score recompute
  29. 2026-09-12 03:59 UTCGHSA enrichment
  30. 2026-09-11 18:34 UTCEG score recompute
  31. 2026-09-11 18:34 UTCGHSA enrichment
  32. 2026-09-11 17:44 UTCEG score recompute
  33. 2026-09-11 17:44 UTCGHSA enrichment
  34. 2026-09-11 15:08 UTCEG score recompute
  35. 2026-09-11 15:08 UTCGHSA enrichment
  36. 2026-09-11 14:53 UTCEPSS rescore
  37. 2026-09-11 14:53 UTCEPSS rescore
  38. 2026-09-11 10:01 UTCEG score recompute
  39. 2026-09-11 10:01 UTCGHSA enrichment
  40. 2026-09-10 22:19 UTCEG score recompute
  41. 2026-09-10 21:46 UTCEG score recompute
  42. 2026-09-10 21:44 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-81941?
CVE-2026-81941 is a high vulnerability published on September 10, 2026. IBM Langflow OSS 1.0.0 through 1.11.5 allows an authenticated non-administrative user could execute arbitrary operating system commands on the server at the privilege level of the application process by constructing a flow with an MCP Tools component configured to use a local stdio subprocess…
When was CVE-2026-81941 disclosed?
CVE-2026-81941 was first published in the National Vulnerability Database on September 10, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-81941 actively exploited?
CVE-2026-81941 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 52.3% of all scored CVEs.
What is the CVSS score of CVE-2026-81941?
CVE-2026-81941 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-81941?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-81941, 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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