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CVE-2026-44652— SillyTavern: SSRF vulnerability in the CORS proxy middleware

Quick assessment

Affected
SillyTavern SillyTavern
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SillyTavern是SillyTavern开源的一个大语言模型的前端界面。 SillyTavern 1.18.0之前版本存在代码问题漏洞，该漏洞源于corsProxyMiddleware将req.params.url直接转发到fetch(url, ...)，仅阻止对其自身主机的循环请求而未强制执行目标允许列表或私有/回环限制，导致服务端请求伪造。

AI Predicted 6.5 Difficulty: Easy EPSS 0.38% · P30

Affected Version Matrix 1

VendorProduct Version RangeStatus
SillyTavern SillyTavern < 1.18.0 affected
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I. Basic Information for CVE-2026-44652

Vulnerability Information
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Vulnerability Title
SillyTavern: SSRF vulnerability in the CORS proxy middleware
Source: CVE Program / CVE List V5
Vulnerability Description
SillyTavern is a locally installed user interface that allows users to interact with text generation large language models, image generation engines, and text-to-speech voice models. Prior to 1.18.0, corsProxyMiddleware forwards req.params.url directly into fetch(url, ...). It only blocks circular requests to its own host and does not enforce destination allowlist or private/loopback restrictions, enabling SSRF. This vulnerability is fixed in 1.18.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
SillyTavern 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SillyTavern是SillyTavern开源的一个大语言模型的前端界面。 SillyTavern 1.18.0之前版本存在代码问题漏洞，该漏洞源于corsProxyMiddleware将req.params.url直接转发到fetch(url, ...)，仅阻止对其自身主机的循环请求而未强制执行目标允许列表或私有/回环限制，导致服务端请求伪造。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SillyTavern SillyTavern < 1.18.0 -

II. Public POCs for CVE-2026-44652

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III. Intelligence Information for CVE-2026-44652

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Vendor Advisories for CVE-2026-44652 (1)

Same Patch Batch · SillyTavern · 2026-05-29 · 6 CVEs total

CVE-2026-44649 9.8 CRITICAL SillyTavern: Authentication Bypass via SSO Header Injection
CVE-2026-44650 9.1 CRITICAL SillyTavern: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'
CVE-2026-46372 8.5 HIGH SillyTavern: SSRF in SearXNG Search Proxy via Unvalidated baseUrl
CVE-2026-44648 7.5 HIGH SillyTavern: Existing sessions are not invalidated after password change, allowing session
CVE-2026-44651 SillyTavern: Reflected XSS vulnerability in the CORS proxy middleware

IV. Related Vulnerabilities

Same product: SillyTavern
Same vendor: SillyTavern
Same weakness: CWE-918

V. Comments for CVE-2026-44652

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