CVE-2026-69098

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-04. A secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
9.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.9%CVSS: 9.8Exploit: Elevated riskExposed services: Not assessed

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

kotaemon through 0.12.0 contains an insecure deserialization vulnerability in the check_connection endpoint that allows unauthenticated attackers to instantiate arbitrary Python classes by supplying crafted YAML/JSON input with a __type__ field. Attackers can exploit this to override the __type__ field with subprocess.check_output and arbitrary arguments, achieving remote code execution with application process privileges.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
75
EG Risk 75/100CISA 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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.9%
EPSS %ILE
58th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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

August 4, 2026

Last Modified

September 23, 2026

Advisory Details (2)

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

kotaemon 0.12.0 Unauthenticated Remote Code Execution via Insecure Deserialization | Advisories | VulnCheck

https://www.vulncheck.com/advisories/kotaemon-unauthenticated-remote-code-execution-via-insecure-deserialization
generic

[Security] Unauthenticated RCE via Insecure Deserialization in /check_connection endpoint · Issue #844 · Cinnamon/kotaemon · GitHub

https://github.com/Cinnamon/kotaemon/issues/844

Vendor Advisories for CVE-2026-69098(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 23× in last 7d / 141× 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 374 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-69098?
CVE-2026-69098 is a critical vulnerability published on August 4, 2026. kotaemon through 0.12.0 contains an insecure deserialization vulnerability in the checkconnection endpoint that allows unauthenticated attackers to instantiate arbitrary Python classes by supplying crafted YAML/JSON input with a type field. Attackers can exploit this to override the type field with…
When was CVE-2026-69098 disclosed?
CVE-2026-69098 was first published on August 4, 2026, with the most recent update on September 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-69098 actively exploited?
CVE-2026-69098 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.9% probability of exploitation in the next 30 days (58th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-69098?
CVE-2026-69098 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-69098?
No fix for CVE-2026-69098 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-2026-69098 are linked in the Vendor Advisories panel on this page.

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