CVE-2026-19306

HIGHPre-NVD 7.77.7—
EchelonGraph scoreMEDIUM confidence

Score 7.7 from GitHub Security Advisory (severity: HIGH) published 2026-09-04. A secondary CVSS source baseline 7.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.7EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.7Exploit: None knownExposed services: Not assessed

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

IBM Langflow OSS 1.0.0 through 1.11.2 allows an authenticated attacker to read arbitrary files from the server filesystem — including server secret material (secret_key, JWT signing keys, the application database, /proc/self/environ, and other tenants' upload directories) — by supplying absolute paths or traversal sequences in the files parameter of an authenticated build request. The file contents were embedded as text attachments in the language model prompt and transmitted to the configured model endpoint, resulting in confidential data exfiltration. This bypassed the LANGFLOW_RESTRICT_LOCAL_FILE_ACCESS=true containment boundary, which was enforced for other file-reading components but not for the Chat Input to Message attachment pipeline.

CVSS v3
7.7
EG Score
7.7HIGHmedium confidence
EG Risk
35
EG Risk 35/100CISA SSVC

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
Severity77% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
32nd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 4, 2026

Last Modified

September 8, 2026

Advisory Details (1)

Auto-updated Sep 4, 2026
No patch confirmed yet.
generic

Security Bulletin: Langflow is vulnerable to arbitrary local file read due to path traversal in ChatInput, bundle FileInput, and GitExtractor components

https://www.ibm.com/support/pages/node/7285641

Vendor Advisories for CVE-2026-19306(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 25× in last 7d / 105× 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 112 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-19306?
CVE-2026-19306 is a high vulnerability published on September 4, 2026. IBM Langflow OSS 1.0.0 through 1.11.2 allows an authenticated attacker to read arbitrary files from the server filesystem — including server secret material (secretkey, JWT signing keys, the application database, /proc/self/environ, and other tenants' upload directories) — by supplying absolute…
When was CVE-2026-19306 disclosed?
CVE-2026-19306 was first published on September 4, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19306 actively exploited?
CVE-2026-19306 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (32nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-19306?
CVE-2026-19306 has a CVSS base score of 7.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-19306?
No fix for CVE-2026-19306 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-19306 are linked in the Vendor Advisories panel on this page.

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