CVE-2026-41180
PsiTransfer is an open source, self-hosted file sharing solution.
Published Apr 23, 2026 · updated Jun 17, 2026
PsiTransfer is an open source, self-hosted file sharing solution. Prior to version 2.4.3, the upload PATCH flow under validates the mounted request path using the still-encoded , but the downstream tus handler later writes using the decoded . In deployments that use a supported custom whose basename prefixes a startup-loaded JavaScript path, such as , an unauthenticated attacker can create in the application root. The attacker-controlled file is then executed on the next process restart. Version 2.4.3 contains a patch.
Code
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Timeline
Detection, updates, and resolution for this record.
Apr 23, 2026 · NIST NVD
Detected
PsiTransfer is an open source, self-hosted file sharing solution. Prior to version 2.4.3, the upload PATCH flow under validates the mounted request path using the still-encoded , but the downstream tus handler later writes using the decoded . In deployments that use a supported custom whose basename prefixes a startup-loaded JavaScript path, such as , an unauthenticated attacker can create in the
Jun 17, 2026 · NIST NVD
Updated
PsiTransfer is an open source, self-hosted file sharing solution. Prior to version 2.4.3, the upload PATCH flow under validates the mounted request path using the still-encoded , but the downstream tus handler later writes using the decoded . In deployments that use a supported custom whose basename prefixes a startup-loaded JavaScript path, such as , an unauthenticated attacker can create in the
Sources
- CVE.orgVulnerability recordCVE-2026-41180
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-2026-41180
PsiTransfer is an open source, self-hosted file sharing solution. Prior to version 2.4.3, the upload PATCH flow under validates the mounted request path using the still-encoded , but the downstream tus handler later writes using the decoded `req.param
nvd.nist.gov