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Advisories

SillyTavern 1.12.13 through 1.19.0 Pre-Authentication Denial of Service via Body Parsing

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severity
high
date
Affecting

  • SillyTavern >= 1.12.13, <= 1.19.0

CWE
  • CWE-400 Uncontrolled Resource Consumption
CVSS
8.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
HaiND from the Post and Telecommunication Institute of Technology
Description
SillyTavern 1.12.13 through 1.19.0 contains a denial of service vulnerability that allows unauthenticated remote attackers to exhaust resources because body-parser middleware runs before authentication and whitelist checks. Attackers can send large or compressed JSON or urlencoded bodies up to 500 MB, optionally in parallel, to exhaust memory and CPU and deny service.

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