External Control of File Name or Path Affecting github.com/siyuan-note/siyuan/kernel/server package, versions <3.6.2
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-GOLANG-GITHUBCOMSIYUANNOTESIYUANKERNELSERVER-15762214
- published24 Mar 2026
- disclosed20 Mar 2026
- creditUnknown
Introduced: 20 Mar 2026
CVE-2026-33476 Â (opens in a new tab)How to fix?
Upgrade github.com/siyuan-note/siyuan/kernel/server to version 3.6.2 or higher.
Overview
Affected versions of this package are vulnerable to External Control of File Name or Path through the /appearance/*filepath file-serving handler in kernel/server/serve.go. An attacker can read arbitrary files accessible to the server process by requesting crafted ../ paths.
Notes
- Authentication checks exclude
/appearance/requests, allowing for unauthenticated access to this endpoint.