Unauthenticated extension deletion via empty sanitized name
Published May 29, 2026 · Updated May 29, 2026
Path traversal in SillyTavern before 1.18.0 allows remote attackers to delete all user extensions through the extension deletion API. POST /api/extensions/delete in src/endpoints/extensions.js validates extensionName before sanitization, so "." becomes an empty string and path.join selects the extensions base directory for recursive removal. In the default configuration, no authentication is required; network access is sufficient to destroy installed extensions, including shared global extensions when global mode runs with administrative privileges.
Summary
What happened
Path traversal in SillyTavern before 1.18.0 allows remote attackers to delete all user extensions through the extension deletion API. POST /api/extensions/delete in src/endpoints/extensions.js validates extensionName before sanitization, so "." becomes an empty string and path.join selects the extensions base directory for recursive removal. In the default configuration, no authentication is required; network access is sufficient to destroy installed extensions, including shared global extensions when global mode runs with administrative privileges.
The record
- CVE
- CVE-2026-44650
- Published
- May 29, 2026
- Updated
- May 29, 2026
- Vendor
- SillyTavern
- Product
- SillyTavern
- Classifications
- CWE-22, T1485
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 29, 2026CVE publishedPublication date reported by the CVE source.
- May 29, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 1.18.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Extension deletion API dot-name payloadproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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