CVE-2026-18729

HIGHPre-NVD 8.88.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-29. A secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this weekWeaponized
8.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • Public exploit code is available (Metasploit)
CISA-KEV: Not listedEPSS PROB: 1.8%CVSS: 8.8Exploit: MetasploitExposed services: Not assessed

IBM strongly recommends addressing the vulnerability now by upgrading Langflow OSS to version 1.11.2 https://pypi.org/project/langflow/ (from the CVE record's solution, IBM Corporation) — apply it.

IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote authenticated attacker to execute arbitrary code due to improper control of generation of code.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
66
EG Risk 66/100

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 (value × EchelonGraph’s weight)
Severity88% × 45%
The EG Score, 8.8 of 10.
Exploitation65% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 2 (Weaponized): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: IBM strongly recommends addressing the vulnerability now by upgrading Langflow OSS to version 1.11.2 https://pypi.org/project/langflow/ (from the CVE record's solution, IBM Corporation). Apply it within your standard update timelines.
EPSS PROB
1.8%
EPSS %ILE
77th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

IBM strongly recommends addressing the vulnerability now by upgrading Langflow OSS to version 1.11.2 https://pypi.org/project/langflow/ (from the CVE record's solution, IBM Corporation). Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 28, 2026

Last Modified

September 1, 2026

Advisory Details (1)

Auto-updated Aug 28, 2026
Fix named in the CVE record's solution (IBM Corporation).
Web page

Security Bulletin: Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement

https://www.ibm.com/support/pages/node/7284733

Vendor Advisories for CVE-2026-18729(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 19× in last 7d / 98× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 172 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 72 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:32 UTCEPSS rescoreEPSS 1.8% · 77th percentile
  2. 2026-10-13 16:33 UTCEPSS rescoreEPSS 1.8% · 77th percentile
  3. 2026-10-12 16:33 UTCEPSS rescoreEPSS 1.8% · 77th percentile
  4. 2026-10-12 16:27 UTCEG score recompute
  5. 2026-10-11 20:07 UTCEG score recompute
  6. 2026-10-11 17:20 UTCEG score recompute
  7. 2026-10-11 14:52 UTCEG score recompute
  8. 2026-10-11 13:48 UTCEPSS rescoreEPSS 1.8% · 77th percentile
  9. 2026-10-10 19:59 UTCEPSS rescoreEPSS 1.8% · 77th percentile
  10. 2026-10-10 12:57 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  11. 2026-10-10 00:48 UTCEG score recompute
  12. 2026-10-10 00:48 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  13. 2026-10-09 20:06 UTCEPSS rescoreEPSS 1.8% · 77th percentile
  14. 2026-10-09 02:36 UTCEG score recompute
  15. 2026-10-09 02:36 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  16. 2026-10-08 17:11 UTCEPSS rescoreEPSS 1.8% · 77th percentile
  17. 2026-10-08 00:48 UTCEG score recompute
  18. 2026-10-08 00:48 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  19. 2026-10-07 23:47 UTCEPSS rescoreEPSS 1.8% · 77th percentile
  20. 2026-10-07 02:57 UTCEG score recompute
  21. 2026-10-07 02:57 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  22. 2026-10-06 15:17 UTCEPSS rescoreEPSS 1.8% · 77th percentile
  23. 2026-10-06 14:50 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  24. 2026-10-06 02:38 UTCEG score recompute
  25. 2026-10-06 02:38 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
Show 75 more
  1. 2026-10-05 17:42 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  2. 2026-10-05 14:31 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  3. 2026-10-05 02:20 UTCEG score recompute
  4. 2026-10-05 02:20 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  5. 2026-10-04 23:21 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  6. 2026-10-04 14:01 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  7. 2026-10-04 01:53 UTCEG score recompute
  8. 2026-10-04 01:53 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  9. 2026-10-03 13:38 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  10. 2026-10-02 20:57 UTCEG score recompute
  11. 2026-10-02 20:57 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  12. 2026-10-02 08:16 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  13. 2026-10-01 20:04 UTCEG score recompute
  14. 2026-10-01 20:04 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  15. 2026-10-01 19:49 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  16. 2026-10-01 07:56 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  17. 2026-09-30 19:48 UTCEG score recompute
  18. 2026-09-30 19:48 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  19. 2026-09-30 15:02 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  20. 2026-09-30 03:49 UTCEG score recompute
  21. 2026-09-30 03:49 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  22. 2026-09-29 15:20 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  23. 2026-09-29 09:51 UTCEG score recompute
  24. 2026-09-29 09:51 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  25. 2026-09-28 21:07 UTCEG score recompute
  26. 2026-09-28 21:07 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  27. 2026-09-28 13:51 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  28. 2026-09-28 08:45 UTCEG score recompute
  29. 2026-09-28 08:45 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  30. 2026-09-27 20:38 UTCEG score recompute
  31. 2026-09-27 20:38 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  32. 2026-09-27 13:47 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  33. 2026-09-27 08:31 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  34. 2026-09-26 20:23 UTCEG score recompute
  35. 2026-09-26 20:23 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  36. 2026-09-26 15:58 UTCEPSS rescoreEPSS 1.9% · 79th percentile
  37. 2026-09-26 08:02 UTCEG score recompute
  38. 2026-09-26 08:02 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  39. 2026-09-25 16:36 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  40. 2026-09-25 04:29 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  41. 2026-09-24 16:22 UTCEG score recompute
  42. 2026-09-24 16:22 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  43. 2026-09-24 04:16 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  44. 2026-09-23 16:08 UTCEG score recompute
  45. 2026-09-23 16:08 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  46. 2026-09-23 04:01 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  47. 2026-09-22 15:54 UTCEG score recompute
  48. 2026-09-22 15:53 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  49. 2026-09-22 03:47 UTCEG score recompute
  50. 2026-09-22 03:47 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  51. 2026-09-21 15:39 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  52. 2026-09-21 03:32 UTCEG score recompute
  53. 2026-09-21 03:32 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  54. 2026-09-20 15:25 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  55. 2026-09-20 03:18 UTCEG score recompute
  56. 2026-09-20 03:17 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  57. 2026-09-19 15:10 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  58. 2026-09-19 02:52 UTCEG score recompute
  59. 2026-09-19 02:52 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  60. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  61. 2026-09-18 14:46 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  62. 2026-09-18 02:39 UTCEG score recompute
  63. 2026-09-18 02:39 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  64. 2026-09-17 14:32 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  65. 2026-09-17 02:19 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  66. 2026-09-16 14:11 UTCEG score recompute
  67. 2026-09-16 14:11 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  68. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  69. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.9% · 57th percentile
  70. 2026-09-16 02:04 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  71. 2026-09-15 13:57 UTCEG score recompute
  72. 2026-09-15 13:57 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  73. 2026-09-15 01:50 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  74. 2026-09-14 13:43 UTCGHSA enrichmentGHSA-q78m-9m47-w7gw · GitHub severity HIGH · GitHub CVSS 8.8
  75. 2026-09-14 01:36 UTCEG score recompute

Publicly available exploits

(1 reference)

Public exploit code is referenced for this CVE (1 Metasploit module). Defenders should treat patch urgency accordingly.

  • Metasploitexploit/multi/http/langflow_auth_rce_cve_2026_18729✓ verified
    Published Sep 11, 2026

    Langflow AI Custom Component Authenticated RCE

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-18729?
CVE-2026-18729 is a high-severity vulnerability; its CVE record was published on August 28, 2026. IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote authenticated attacker to execute arbitrary code due to improper control of generation of code.
When was the CVE record for CVE-2026-18729 published?
The CVE record for CVE-2026-18729 was published on August 28, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 1, 2026; the record at its source may have been updated since.
Is CVE-2026-18729 actively exploited?
CVE-2026-18729 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model places it in Tier 2 (Weaponized), which is not evidence of exploitation: a Metasploit module exists for it. EchelonGraph does not test whether exploit code works. FIRST EPSS estimates a 1.8% probability of exploitation in the next 30 days (77th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-18729?
CVE-2026-18729 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-18729?
The CVE record's solution for CVE-2026-18729, written by its CNA IBM Corporation, names the fix: "IBM strongly recommends addressing the vulnerability now by upgrading Langflow OSS to version 1.11.2 https://pypi.org/project/langflow/". The vendor advisories EchelonGraph has for CVE-2026-18729 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-18729

Explore →

Is Your Infrastructure Affected by CVE-2026-18729?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs