Intel

CVE-2026-69098

Kotaemon bis Version 0.

criticalEPSS 0.9%

Description

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.

Source: NVD (NIST)cvelistv5

Metrics

XIEM Effective CVSS
9.8
Source: nvd-v3
EPSS percentile
58.9 %
High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
KEV status
—
Show all metrics
Severity
critical
Priority score
100.97
Exploit maturity
no public PoC known
CVSS v3
9.8
CVSS v4
9.3
EPSS score
0.9 %
Low — model estimates < 1% exploitation likelihood.
Published
2026-08-04 15:15 UTC
CWE
CWE-502

Weakness classes (CWE)

  • CWE-502Base

    Deserialization of Untrusted Data

    The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

    cwe.mitre.org →

References & sources

Reanalysis & status changes

Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

  1. CVE Modified2026-08-05 16:17 UTC· 134c704f-9b21-4f2e-91b3-4a467353bcc0
    • SSVC: {"id":"CVE-2026-69098","role":"CISA Coordinator","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalI…
  2. New CVE Received2026-08-04 16:16 UTC· disclosure@vulncheck.com
    • Affected: kotaemon
    • Description: 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 V4.0: AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    • CVSS V3.1: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Linked advisories