CVE-2026-101056 json
Cloudreve before 4.16.1 Authentication Bypass via Cached Context Hint
published 2026-08-24 2 mo ago modified 2026-10-08 31 d ago also EUVD-2026-87981 , GHSA-vx2m-jpxr-xv7w , GO-2026-6287
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 9%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- cloudreve cloudreve 4.16.1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 42 d ago
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 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 |
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| CNA | 4.0 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/cloudreve/Cloudreve/v4 | <=4.0.0-20260606032813-26b6b1044b02 all versions |
no fix listed |
| go | github.com/cloudreve/Cloudreve | all versions |
no fix listed |
| go | github.com/cloudreve/Cloudreve/v3 | all versions |
no fix listed |
Affected products
- cloudreve cloudreve
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/cloudreve/cloudreve/security/advisories/GHSA-vx2m-jpxr-xv7w
vendor-advisory, web, advisory
-
vulncheck.com
/advisories/cloudreve-before-4.16.1-authentication-bypass-via-cached-context-hint
third-party-advisory
-
github.com
/cloudreve/cloudreve
package
Sources
- CVE List CVE-2026-101056
- GitHub Advisory GHSA-vx2m-jpxr-xv7w
- NVD CVE-2026-101056
- OSV GO-2026-6287
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.