CVE-2026-9198

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2026-08-04), indicating real-world exploitation has been confirmed by US federal agencies. a secondary CVSS source baseline 9.8 retained for reference (NVD's own analysis pending). Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, secondary
Trending — 4 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 35%CVSS: 9.8Exploit: cisa kev · ssvc active · Metasploit · epss top5pct · public exploitExposed: 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 1.10.0 allows unauthenticated attackers to chain /api/v1/auto_login (mints SUPERUSER tokens to any network caller) with /api/v1/validate/code (executes user code via exec()) to achieve full RCE on default Langflow deployments

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

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
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
35%
EPSS %ILE
98%
KEV
⚠ Exploited

Published

July 17, 2026

Last Modified

August 17, 2026

Advisory Details (2)

Auto-updated Aug 24, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-9198
generic

Security Bulletin: Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation

https://www.ibm.com/support/pages/node/7278927

Vendor Advisories for CVE-2026-9198(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 55× in last 7d / 247× 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.

Showing the most recent 100 of 398 total refreshes for this CVE.

  1. 2026-08-30 06:44 UTCGHSA enrichment
  2. 2026-08-30 02:25 UTCEG score recompute
  3. 2026-08-30 02:25 UTCGHSA enrichment
  4. 2026-08-30 01:22 UTCEPSS rescore
  5. 2026-08-29 22:06 UTCGHSA enrichment
  6. 2026-08-29 17:47 UTCGHSA enrichment
  7. 2026-08-29 13:27 UTCGHSA enrichment
  8. 2026-08-29 09:06 UTCGHSA enrichment
  9. 2026-08-29 04:46 UTCGHSA enrichment
  10. 2026-08-29 00:27 UTCEG score recompute
  11. 2026-08-29 00:27 UTCGHSA enrichment
  12. 2026-08-28 21:42 UTCEPSS rescore
  13. 2026-08-28 20:07 UTCGHSA enrichment
  14. 2026-08-28 15:47 UTCGHSA enrichment
  15. 2026-08-28 11:26 UTCGHSA enrichment
  16. 2026-08-28 07:03 UTCGHSA enrichment
  17. 2026-08-28 02:43 UTCGHSA enrichment
  18. 2026-08-27 22:24 UTCGHSA enrichment
  19. 2026-08-27 18:05 UTCEG score recompute
  20. 2026-08-27 18:05 UTCGHSA enrichment
  21. 2026-08-27 17:22 UTCCISA KEV update
  22. 2026-08-27 14:25 UTCEPSS rescore
  23. 2026-08-27 13:46 UTCGHSA enrichment
  24. 2026-08-27 09:27 UTCGHSA enrichment
  25. 2026-08-27 05:08 UTCGHSA enrichment
Show 75 more
  1. 2026-08-27 00:49 UTCGHSA enrichment
  2. 2026-08-26 20:29 UTCGHSA enrichment
  3. 2026-08-26 17:41 UTCCISA KEV update
  4. 2026-08-26 16:10 UTCEG score recompute
  5. 2026-08-26 16:10 UTCGHSA enrichment
  6. 2026-08-26 14:47 UTCEPSS rescore
  7. 2026-08-26 11:50 UTCGHSA enrichment
  8. 2026-08-26 07:31 UTCGHSA enrichment
  9. 2026-08-26 03:12 UTCGHSA enrichment
  10. 2026-08-25 22:52 UTCGHSA enrichment
  11. 2026-08-25 18:33 UTCGHSA enrichment
  12. 2026-08-25 14:15 UTCEG score recompute
  13. 2026-08-25 14:15 UTCGHSA enrichment
  14. 2026-08-25 13:49 UTCEPSS rescore
  15. 2026-08-25 09:55 UTCGHSA enrichment
  16. 2026-08-25 05:36 UTCGHSA enrichment
  17. 2026-08-25 01:17 UTCGHSA enrichment
  18. 2026-08-24 20:57 UTCGHSA enrichment
  19. 2026-08-24 18:52 UTCCISA KEV update
  20. 2026-08-24 16:38 UTCEG score recompute
  21. 2026-08-24 16:38 UTCGHSA enrichment
  22. 2026-08-24 14:18 UTCEPSS rescore
  23. 2026-08-24 12:20 UTCEG score recompute
  24. 2026-08-24 12:20 UTCGHSA enrichment
  25. 2026-08-24 08:00 UTCGHSA enrichment
  26. 2026-08-24 03:41 UTCGHSA enrichment
  27. 2026-08-23 23:22 UTCGHSA enrichment
  28. 2026-08-23 19:03 UTCGHSA enrichment
  29. 2026-08-23 14:44 UTCGHSA enrichment
  30. 2026-08-23 10:25 UTCGHSA enrichment
  31. 2026-08-23 06:06 UTCGHSA enrichment
  32. 2026-08-23 01:46 UTCEG score recompute
  33. 2026-08-23 01:46 UTCGHSA enrichment
  34. 2026-08-23 00:19 UTCEPSS rescore
  35. 2026-08-22 21:28 UTCGHSA enrichment
  36. 2026-08-22 17:09 UTCGHSA enrichment
  37. 2026-08-22 12:50 UTCGHSA enrichment
  38. 2026-08-22 08:31 UTCGHSA enrichment
  39. 2026-08-22 04:12 UTCGHSA enrichment
  40. 2026-08-21 23:52 UTCEG score recompute
  41. 2026-08-21 23:52 UTCGHSA enrichment
  42. 2026-08-21 23:49 UTCEPSS rescore
  43. 2026-08-21 19:34 UTCGHSA enrichment
  44. 2026-08-21 16:49 UTCCISA KEV update
  45. 2026-08-21 15:15 UTCGHSA enrichment
  46. 2026-08-21 10:55 UTCGHSA enrichment
  47. 2026-08-21 06:36 UTCGHSA enrichment
  48. 2026-08-21 02:16 UTCEG score recompute
  49. 2026-08-21 02:16 UTCGHSA enrichment
  50. 2026-08-20 22:56 UTCEPSS rescore
  51. 2026-08-20 21:58 UTCGHSA enrichment
  52. 2026-08-20 17:39 UTCGHSA enrichment
  53. 2026-08-20 17:06 UTCCISA KEV update
  54. 2026-08-20 13:20 UTCGHSA enrichment
  55. 2026-08-20 09:00 UTCGHSA enrichment
  56. 2026-08-20 04:42 UTCGHSA enrichment
  57. 2026-08-20 00:23 UTCGHSA enrichment
  58. 2026-08-19 20:04 UTCEG score recompute
  59. 2026-08-19 20:04 UTCGHSA enrichment
  60. 2026-08-19 17:33 UTCCISA KEV update
  61. 2026-08-19 17:04 UTCEPSS rescore
  62. 2026-08-19 15:44 UTCGHSA enrichment
  63. 2026-08-19 11:25 UTCGHSA enrichment
  64. 2026-08-19 07:06 UTCGHSA enrichment
  65. 2026-08-19 02:46 UTCGHSA enrichment
  66. 2026-08-18 22:27 UTCGHSA enrichment
  67. 2026-08-18 18:08 UTCGHSA enrichment
  68. 2026-08-18 16:58 UTCCISA KEV update
  69. 2026-08-18 13:49 UTCEG score recompute
  70. 2026-08-18 13:49 UTCGHSA enrichment
  71. 2026-08-18 13:49 UTCEPSS rescore
  72. 2026-08-18 09:30 UTCGHSA enrichment
  73. 2026-08-18 05:11 UTCGHSA enrichment
  74. 2026-08-18 00:50 UTCGHSA enrichment
  75. 2026-08-17 20:29 UTCEG score recompute

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Metasploit module). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Metasploitexploit/multi/http/langflow_unauth_rce_cve_2026_9198✓ verified
    First seen Jul 17, 2026

    Langflow AI auto_login RCE

    Open source ↗
  • Nucleihttp/cves/2026/CVE-2026-9198.yaml
    First seen Jan 1, 2026

    IBM Langflow - Remote Code Execution

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2026-9198?
CVE-2026-9198 is a critical vulnerability published on July 17, 2026. IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to chain /api/v1/auto_login (mints SUPERUSER tokens to any network caller) with /api/v1/validate/code (executes user code via exec()) to achieve full RCE on default Langflow deployments
When was CVE-2026-9198 disclosed?
CVE-2026-9198 was first published in the National Vulnerability Database on July 17, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9198 actively exploited?
Yes. CISA added CVE-2026-9198 to the Known Exploited Vulnerabilities catalog on August 4, 2026, affecting IBM Langflow. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2026-9198?
CVE-2026-9198 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2026-9198?
CVE-2026-9198 affects IBM Langflow. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2026-9198?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9198, 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-2026-9198

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