What is CVE-2026-62323?

CVE-2026-62323 is a medium-severity vulnerability in Cloudreve, classified under Incorrect Authorization. CVSS score: 6.3/10. Published 2026-07-31.

How severe is CVE-2026-62323?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Auth bypass in Cloudreve

CVE-2026-62323

Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, ViewerSessionValidation uses only the session-id prefix of a WOPI access token and does not enforce the requested viewer action, allowing a malicious or compro…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N.

Affected products

Cloudreve — versions < 4.17.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-62323?: CVE-2026-62323 is a medium-severity vulnerability in Cloudreve, classified under Incorrect Authorization. CVSS score: 6.3/10. Published 2026-07-31.
How severe is CVE-2026-62323?: Medium severity. CVSS v3 base score is 6.3 out of 10.