CVE-2026-79916CWE-78command-injection

CVE-2026-79916

Critical · published September 22, 2026

CVSS v3.1
9.1
EPSS
0%
Percentile
37.7
In the wild
Unconfirmed
What it is

MaxKB is an open-source AI assistant for enterprise. Prior to 2.10.5-lts, authenticated workspace members can inject control characters into AWS Bedrock access_key_id and secret_access_key fields that _update_aws_credentials writes to /root/.aws/credentials without safe parsing. An attacker can append a new AWS profile containing credential_process, then select that profile during a later model-validation request so botocore executes an attacker-controlled command as root. This vulnerability is fixed in 2.10.5-lts.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00446 · 37.7th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-09-22T01:17Z
References (4)
EPSS history
Timeline
  • 23 SEP 03:48Z
    EPSS moved — → 0%
    epss
  • 21 SEP 20:34Z
    MaxKB AWS Bedrock model credential injection leads to remote code execution
    cvelistv5