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Vulnerabilities

Vulnerability · CVE-2026-41180

PsiTransfer is an open source, self-hosted file sharing solution.

Published Apr 23, 2026 · catalog updated Jun 17, 2026 · PsiTransfer is an open

Check if you run it

No confirmed exploitation is on record for CVE-2026-41180. EPSS is 0.46%. Act only if a listed version of PsiTransfer is an open is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (PsiTransfer is an open).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.46%
Remediation
Advisory link
Affected products
See sources for product scope

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.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-41180

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-41180. EPSS is 0.46%. Act only if a listed version of PsiTransfer is an open is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-22: Path Traversal. EPSS 0.46%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. 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

  2. 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
  • FIRST EPSSExploitation probabilityCVE-2026-41180

    30-day exploitation probability 0.5%

    first.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

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.