CVE-2026-101056CWE-863broken-access-control

CVE-2026-101056

Medium · published September 27, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
8.7
In the wild
Unconfirmed
What it is

Cloudreve before 4.16.1 fails to revalidate share access when restoring cached navigator state from a context_hint UUID. Attackers who previously had valid share access can replay the cached hint to generate signed file URLs for up to 300 seconds after the share is deleted, expires, or reaches zero remaining downloads.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00195 · 8.7th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-09-27T22:16Z
References (2)
https://github.com/cloudreve/cloudreve/security/advisories/GHSA-vx2m-jpxr-xv7w · [email protected]https://www.vulncheck.com/advisories/cloudreve-before-4.16.1-authentication-bypass-via-cached-context-hint · [email protected]
EPSS history
Timeline
  • 29 SEP 03:24Z
    EPSS moved — → 0%
    epss
  • 27 SEP 17:02Z
    Cloudreve before 4.16.1 Authentication Bypass via Cached Context Hint
    cvelistv5