CVE-2026-67618

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-04. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

marimo before 0.23.15 contains a configuration injection vulnerability that allows notebook authors to exfiltrate operator API keys by embedding a malicious base_url in PEP-723 inline script metadata, which is merged into session configuration with higher precedence than the operator's own settings due to insufficient sanitization in sanitize_pyproject_dict. When an operator opens the crafted notebook and makes an AI request, marimo resolves the attacker-controlled base_url from the notebook config while falling back to the operator's OPENAI_API_KEY environment variable for authentication, transmitting the API key to the attacker-controlled endpoint without requiring any cell execution.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
34
EG Risk 34/100CISA 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
Severity65% × 45%
Exploitation0% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.3%
EPSS %ILE
20th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). 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

August 4, 2026

Last Modified

September 16, 2026

Advisory Details (4)

Auto-updated Aug 4, 2026
Patch available. Sources: github_commit, github_release, github_pr.
generic

marimo < 0.23.15 API Key Exfiltration via Malicious Notebook PEP-723 Metadata | Advisories | VulnCheck

https://www.vulncheck.com/advisories/marimo-api-key-exfiltration-via-malicious-notebook-pep-723-metadata
github_commit Patch Available

commit 1a21bd71e258 (marimo-team/marimo)

Patch available: marimo-team/marimo 0.23.15 (contains commit 1a21bd71e258)

https://github.com/marimo-team/marimo/commit/1a21bd71e258438d2511136b5edacc94c08855f4
github_pr Patch Available

fix: additional pep 723 sanitization

Patch available: marimo-team/marimo 0.23.15 (PR #10281 merged 2026-07-23)

https://github.com/marimo-team/marimo/pull/10281
github_release Patch Available

0.23.15

Patch available: marimo-team/marimo 0.23.15

https://github.com/marimo-team/marimo/releases/tag/0.23.15

Vendor Advisories for CVE-2026-67618(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 14× in last 7d / 64× 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 150 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-67618?
CVE-2026-67618 is a medium vulnerability published on August 4, 2026. marimo before 0.23.15 contains a configuration injection vulnerability that allows notebook authors to exfiltrate operator API keys by embedding a malicious baseurl in PEP-723 inline script metadata, which is merged into session configuration with higher precedence than the operator's own settings…
When was CVE-2026-67618 disclosed?
CVE-2026-67618 was first published on August 4, 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-2026-67618 actively exploited?
CVE-2026-67618 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (20th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-67618?
CVE-2026-67618 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-67618?
A fix for CVE-2026-67618 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-67618 are linked in the Vendor Advisories panel on this page.

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