TI-2026-70828 Aliases CVE-2026-108980 GHSA-q62g-66hr-78pq

Path traversal in Blinko plugin install overwrites startup files

HIGH 73CWE-24Published 2026-10-12 · Updated 2026-10-13

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Blinko through 1.8.8 has a path traversal flaw (CWE-24) in its plugin installation code. The plugin.installPlugin procedure is open to any authenticated user and does not sanitize the plugin name, so downloaded files can be written outside the plugins directory. The official Docker image runs as root, so an authenticated attacker can overwrite a root-owned startup file and achieve remote code execution as root. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Blinko through 1.8.8 allows directory traversal, overwriting startup files as root, via installPlugin. It builds the plugin install path from an unsanitized name in server/routerTrpc/plugin.ts, and the plugin.installPlugin tRPC procedure is open to any authenticated user. Thus, a name containing ../ sequences writes the downloaded plugin files outside the plugins directory. Because the official Docker image runs as root, an authenticated attacker overwrites a root-owned startup file and achieves remote code execution as root. Self-registration for an account may be possible.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.01063 64th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
blinkospace	Blinko	up to 1.8.8	—	No fix listed	CNA

Blinko Vendorblinkospace Affected up to 1.8.8 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Blinko.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

2026-10-12 Threatist record created from CVE-2026-108980
2026-10-12 Alias added: GHSA-q62g-66hr-78pq
2026-10-13 CISA SSVC decision points changed
2026-10-13 Priority changed: MEDIUM → HIGH

References

Exploit 1

https://github.com/kashishtopi/blinko-plugin-path-traversal-rce

Other 2

TI-2026-58732 Blinko 1.8.7 Cross-User AI Conversation Read and Write via message tRPC Router CVSS 4.0HIGH 8.7
TI-2026-58749 Blinko 1.8.7 Cross-User Private Note Disclosure via noteReferenceList CVSS 4.0HIGH 7.1
TI-2026-74433 Broken access control in Blinko lets users read private attachments CVSS 4.0MEDIUM 6.0
TI-2026-19240 Blinko: Admin RCE - MCP Server Command Injection CVSS 4.0HIGH 8.6
TI-2026-18915 Blinko: Unauthorized Arbitrary File Read - /api/file/temp CVSS 4.0HIGH 8.2
TI-2026-18919 Blinko: Unauthorized User Information Leak CVSS 4.0MEDIUM 6.9

See all 14 →

Sources

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