CVE-2026-108545CWE-400denial-of-service

CVE-2026-108545

Medium · published October 10, 2026

CVSS v3.1
5.9
EPSS
1%
Percentile
46.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.2 · 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
EPSS
0.00577 · 46.8th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-10-10T19:16Z
References (4)
https://github.com/SillyTavern/SillyTavern · [email protected]https://github.com/SillyTavern/SillyTavern/blob/1.19.0/src/server-main.js#L110-L150 · [email protected]https://hackmd.io/@haind/sillytavern-preauth-body-parser-dos · [email protected]https://www.vulncheck.com/advisories/sillytavern-1.12.13-through-1.19.0-pre-authentication-denial-of-service-via-body-parsing · [email protected]
EPSS history
Timeline
  • 12 OCT 03:26Z
    EPSS moved — → 1%
    epss
  • 10 OCT 14:15Z
    SillyTavern 1.12.13 through 1.19.0 Pre-Authentication Denial of Service via Body Parsing
    cvelistv5
  • 10 OCT 14:15Z
    SillyTavern 1.12.13 through 1.19.0 Pre-Authentication Denial of Service via Body Parsing
    cvelistv5