CVE-2026-108545
SillyTavern 1.12.13 through 1.19.0 Pre-Authentication Denial of Service via Body Parsing
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.
INFO
Published Date :
Oct. 10, 2026, 2:15 p.m.
Last Modified :
Oct. 10, 2026, 2:15 p.m.
Remotely Exploit :
Yes !
Source :
VulnCheck
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 |
Solution
- Update SillyTavern to the latest version.
- Configure body-parser middleware carefully.
- Implement stricter input validation.
- Ensure authentication checks run first.
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CVE-2026-108545 vulnerability anywhere in the article.