CVE-2026-108545

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

Published Oct 10, 2026 CVSS 4.0 · 8.2 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title SillyTavern 1.12.13 through 1.19.0 Pre-Authentication Denial of Service via Body Parsing
First Time appeared Sillytavern
Sillytavern sillytavern
Weaknesses CWE-400
CPEs cpe:2.3:a:sillytavern:sillytavern:*:*:*:*:*:*:*:*
Vendors & Products Sillytavern
Sillytavern sillytavern
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.2, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 14, 2026, 4:03 PM
Reserved
Oct 10, 2026, 2:06 PM
Status
Deferred
Published
Oct 10, 2026, 3:16 PM
Modified
Oct 14, 2026, 4:17 PM