Vulnerability DatabaseCVE-2026-108545
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CVE-2026-108545
Published:October 10, 2026
Updated:October 11, 2026
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.
Related Resources (6)
https://github.com/SillyTavern/SillyTavern/blob/1.19.0/src/server-main.js#L110-L150
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108545.json
https://nvd.nist.gov/vuln/detail/CVE-2026-108545
https://www.vulncheck.com/advisories/sillytavern-1.12.13-through-1.19.0-pre-authentication-denial-of-service-via-body-parsing
https://hackmd.io/@haind/sillytavern-preauth-body-parser-dos
https://github.com/SillyTavern/SillyTavern
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CVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Uncontrolled Resource Consumption
CWE-400