Vulnerability DatabaseCVE-2026-110774
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CVE-2026-110774
Published:October 14, 2026
Updated:October 22, 2026
Blinko through 1.8.8 contains a broken access control vulnerability in the /api/file route that allows authenticated users to read other users' private attachments due to a flawed owner check. Attackers can supply another user's stored filename, following a basename plus millisecond-timestamp pattern, to download private, non-shared attachments.
Related Resources (6)
https://www.vulncheck.com/advisories/blinko-through-1.8.8-private-attachment-read-via-api-file-route
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110774.json
https://github.com/blinkospace/blinko/blob/178e4b3538a21823a50ac2481e653d56cb1ffa86/server/routerExpress/file/file.ts#L148
https://github.com/blinkospace/blinko
https://hackmd.io/@hieuPenguinnn/blinko-attachment-accountid-idor
https://nvd.nist.gov/vuln/detail/CVE-2026-110774
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CVSS v4
Base Score:
6
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Authorization Bypass Through User-Controlled Key
CWE-639
EPSS
Base Score:
0.24