CVE-2026-110774: medium-severity vulnerability in blinkospace blinko
Blinko through 1.8.8 Private Attachment Read via /api/file Route
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 6epss 0.2%
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.
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
blinkospace · blinkopublic PoCs found — 1
cve_referencehackmd.io/@hieuPenguinnn/blinko-attachment-accountid-idorunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — blinkospace blinko
In the same product, most dangerous first.
CVE-2026-23482HIGHBlinko: Unauthorized Arbitrary File Read - /api/file/tempEPSS 1.5%CVE-2026-23483MEDIUMBlinko: Unauthorized Arbitrary File Read - /pluginsEPSS 0.8%CVE-2026-23486MEDIUMBlinko: Unauthorized User Information LeakEPSS 0.7%CVE-2026-85607HIGHBlinko 1.8.7 Cross-User AI Conversation Read and Write via message tRPC RouterEPSS 0.7%CVE-2026-85624HIGHBlinko 1.8.7 Cross-User Private Note Disclosure via noteReferenceListEPSS 0.4%CVE-2026-23481MEDIUMBlinko: Authenticated Arbitrary File Write - saveAdditionalDevFileEPSS 0.4%
References
https://github.com/blinkospace/blinkohttps://github.com/blinkospace/blinko/blob/178e4b3538a21823a50ac2481e653d56cb1ffa86/server/routerExpress/file/file.ts#L148https://hackmd.io/@hieuPenguinnn/blinko-attachment-accountid-idorhttps://www.vulncheck.com/advisories/blinko-through-1.8.8-private-attachment-read-via-api-file-route