TI-2026-76926 Aliases CVE-2026-113597 GHSA-j632-67pv-3cvg

Insecure direct object reference in Blinko tag tRPC router

LOW 24CWE-639Published 2026-10-20 · Updated 2026-10-20

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

Blinko through 1.8.8 contains an insecure direct object reference in its tag tRPC router, tracked as CWE-639. An authenticated user with low privileges on the network can read and modify tags owned by other users by supplying arbitrary tag IDs. This exposes private note topics and lets the attacker change other users' tag icons and ordering.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Blinko through 1.8.8 contains an insecure direct object reference vulnerability in the tag tRPC router that allows authenticated users to read and modify other users' tags by supplying arbitrary tag IDs. Attackers can enumerate sequential IDs via fullTagNameById, updateTagIcon, and updateTagOrder to reveal private note topics and tamper with tag icons and ordering.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00272 19th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

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

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:blinko:blinko::::::::	—	—	blinkospace

cpe:2.3:a:blinko:blinko:*:*:*:*:*:*:*:* Versions — — ·blinkospace

Remediation

The sources list no fixed version for Blinko.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

2026-10-20 Threatist record created from CVE-2026-113597
2026-10-20 CISA SSVC decision points changed
2026-10-21 Alias added: GHSA-j632-67pv-3cvg

References

Patch 1

https://github.com/blinkospace/blinko/pull/1171

Other 2

TI-2026-70828 Path traversal in Blinko plugin install overwrites startup files CVSS 3.1HIGH 8.8
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

See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences