CVE-2026-6543

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-01. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%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 Desktop 1.0.0 through 1.8.4 Langflow allows an attacker to execute arbitrary commands with the privileges of the process running Langflow. This allows reading sensitive environment variables (API keys, DB credentials), modifying files, or launching further attacks on the internal network.

CVSS v3
8.8
EG Score
8.8(medium)
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%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
39%
KEV
Not listed

Published

April 30, 2026

Last Modified

May 11, 2026

Advisory Details (1)

Auto-updated Apr 30, 2026
No patch confirmed yet.
generic

Security Bulletin: Authenticated Remote Code Execution Vulnerability in Langflow Code Validation Endpoint

https://www.ibm.com/support/pages/node/7271092

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 62× 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 195 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-6543?
CVE-2026-6543 is a high vulnerability published on April 30, 2026. IBM Langflow Desktop 1.0.0 through 1.8.4 Langflow allows an attacker to execute arbitrary commands with the privileges of the process running Langflow. This allows reading sensitive environment variables (API keys, DB credentials), modifying files, or launching further attacks on the internal…
When was CVE-2026-6543 disclosed?
CVE-2026-6543 was first published in the National Vulnerability Database on April 30, 2026, with the most recent update on May 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6543 actively exploited?
CVE-2026-6543 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 61.1% of all scored CVEs.
What is the CVSS score of CVE-2026-6543?
CVE-2026-6543 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-6543?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6543, 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.

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