CVE-2026-108545: high-severity vulnerability in SillyTavern
SillyTavern 1.12.13 through 1.19.0 Pre-Authentication Denial of Service via Body Parsing
Published · Updated
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.2epss 0.6%
exploitation probability
0.6%top 53% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
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
Affected products
SillyTavern · SillyTavernpublic PoCs found — 1
cve_referencehackmd.io/@haind/sillytavern-preauth-body-parser-dosunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — SillyTavern
In the same product, most dangerous first.
CVE-2026-46372HIGHSillyTavern: SSRF in SearXNG Search Proxy via Unvalidated baseUrlEPSS 0.9%CVE-2026-34524HIGHSillyTavern: Path traversal in `/api/chats/export` and `/api/chats/delete` allows arbitrary file read/delete within user data rootEPSS 0.6%CVE-2026-44650CRITICALSillyTavern: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')EPSS 0.6%CVE-2026-34523MEDIUMSillyTavern: Path traversal allows file existence oracleEPSS 0.4%CVE-2026-34522HIGHSillyTavern: Path traversal in `/api/chats/import` allows arbitrary file write outside intended chat directoryEPSS 0.4%CVE-2026-44648HIGHSillyTavern: Existing sessions are not invalidated after password change, allowing session reuse and account takeoverEPSS 0.4%
References
https://github.com/SillyTavern/SillyTavernhttps://github.com/SillyTavern/SillyTavern/blob/1.19.0/src/server-main.js#L110-L150https://hackmd.io/@haind/sillytavern-preauth-body-parser-doshttps://www.vulncheck.com/advisories/sillytavern-1.12.13-through-1.19.0-pre-authentication-denial-of-service-via-body-parsing