CVE-2026-108545
MEDIUMCVSS 5.9Description
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.
Timeline
Published:October 10th, 2026 3:16 PM
Last modified:October 14th, 2026 4:17 PM
CVSS Scoring
CVSS v3: 5.9 (MEDIUM)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses (CWE)
References & Reports
Advisories, patches, and third-party reports
- https://github.com/SillyTavern/SillyTavern
- https://github.com/SillyTavern/SillyTavern/blob/1.19.0/src/server-main.js#L110-L150
- https://hackmd.io/@haind/sillytavern-preauth-body-parser-dos
- https://www.vulncheck.com/advisories/sillytavern-1.12.13-through-1.19.0-pre-authentication-denial-of-service-via-body-parsing
Source: NIST NVD · Data may lag official sources by up to one minute