CVE-2026-44651

Description

SillyTavern has a reflected XSS vulnerability in the CORS proxy middleware

Overview

State

—

Assigner (CNA)

—

CVSS severity

medium

CVSS score

6.1 / 10

CVSS vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Effective score

6.1 / 10 MEDIUM source: CNA overview

CWE(s)

—

Reserved

—

Published

—

Last updated

—

Source

https://www.tenable.com/cve/CVE-2026-44651

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID

EUVD-2026-33405

Assigner

GitHub_M

Published

May 29, 2026, 5:49:19 PM

Updated

Jun 1, 2026, 3:20:31 PM

EUVD base score (CVSS 4.0)

6.9 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

EUVD-reported EPSS

0.3200

Vendors

SillyTavern

Products

SillyTavern (< 1.18.0)

Aliases

GHSA-xc4x-2452-5gc9

ENISA 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, when fetch(url) throws, the code sends: res.status(500).send('Error occurred while trying to proxy to: ' + url + ' ' + error). The url value is attacker-controlled (req.params.url) and is not HTML-escaped before rendering. This vulnerability is fixed in 1.18.0.

Vendor references (0)

References embedded in the original CVE record by the assigning CNA.

None in the CVE record.

Web references (4)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

• https://github.com/SillyTavern/SillyTavern/security/advisories/GHSA-xc4x-2452-5gc9 tenable:github.com
• https://www.first.org/epss/ tenable:www.first.org
• https://nvd.nist.gov/vuln/detail/CVE-2026-44651 tenable:nvd.nist.gov
• https://www.cve.org/CVERecord?id=CVE-2026-44651 tenable:www.cve.org

• CISA Warns of Exploited Microsoft Defender 0-Day Flaws
  web:cyberpress.org

  The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added two actively exploited Microsoft Defender vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, issuing an urgent remediation directive for federal agencies with a due date of June 3, 2026 .

  2026-05-26 03:07 UTC
• Microsoft Releases Mitigation for Windows BitLocker Security Bypass 0 ...
  web:cybersecuritynews.com

  No patch has been released yet; Microsoft has instead issued a multi-step manual mitigation guide while a formal security update is prepared. Windows BitLocker Security Bypass The vulnerability originates in WinRE's handling of the BootExecute registry value under HKLM\ControlSet001\Control\Session Manager.

  2026-05-26 03:07 UTC
• Security Update Guide - Loading - Microsoft
  web:msrc.microsoft.com

  Security Updates Acknowledgements

  2026-05-26 03:07 UTC
• Nvd - Cve-2026-45585
  web:nvd.nist.gov

  An official website of the United States government Here's how you know

  2026-05-26 03:07 UTC
• Microsoft Patches Two Actively Exploited Defender Zero-Days on Windows
  web:windowsreport.com

  Microsoft patched two actively exploited Defender zero-days affecting Windows systems and security components.

  2026-05-26 03:07 UTC
• Microsoft Confirms Active 0-Day Exploit—Check Emergency Mitigation
  web:www.forbes.com

  Updated May 17: This article, originally published May 16, has been updated to include further details on the emergency mitigation process recommended after the CVE - 2026 -42897 Microsoft Exchange ...

  2026-05-26 03:07 UTC
• Microsoft provides mitigation for "YellowKey" BitLocker bypass flaw ...
  web:www.helpnetsecurity.com

  Microsoft is working on a fix for CVE - 2026 -45585 (aka "Yellowkey"), a vulnerability that can be used to bypass Windows' BitLocker protection.

  2026-05-26 03:07 UTC
• Microsoft Rolls Out Mitigations for 'YellowKey' BitLocker ...
  web:www.securityweek.com

  Microsoft has announced mitigations for CVE - 2026 -45585, a BitLocker bypass triggered via FsTx in Windows Recovery.

  2026-05-26 03:07 UTC
• Microsoft confirms two major Defender security issues - TechRadar
  web:www.techradar.com

  Microsoft patches two actively exploited zero‑day flaws in Defender, tracked as CVE‑2026‑41091 (privilege escalation) and CVE‑2026‑45498 (denial of service) Updates were shipped ...

  2026-05-26 03:07 UTC
• Windows 11 April 2026 Update tested: What's new, improved and fixed
  web:www.windowslatest.com

  Windows 11 April 2026 update adds Narrator Copilot support, faster Settings, File Explorer fixes, and key security improvements.

  2026-05-26 03:07 UTC

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