CVE-2026-85607

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-04. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Blinko 1.8.7 contains an authorization bypass (IDOR) vulnerability in multiple tRPC procedures (message.list, message.update, message.delete, message.clearAfter in server/routerTrpc/message.ts and conversation.clearMessages in server/routerTrpc/conversation.ts). Although these procedures require authentication, they query the database by caller-supplied conversation or message ID without verifying that the resource belongs to the requesting account. Any authenticated user can therefore read another user's full AI chat history, modify individual message content, and delete or wipe entire conversations by enumerating sequential integer IDs.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
56(Track*)
EG Risk 56/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
39%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 10, 2026

Advisory Details (5)

Auto-updated Sep 4, 2026
No patch confirmed yet.
generic

Blinko 1.8.7 Cross-User AI Conversation Read and Write via message tRPC Router | Advisories | VulnCheck

https://www.vulncheck.com/advisories/blinko-1.8.7-cross-user-ai-conversation-read-and-write-via-message-trpc-router
generic

blinko/server/routerTrpc/conversation.ts at 1.8.8 · blinkospace/blinko · GitHub

https://github.com/blinkospace/blinko/blob/1.8.8/server/routerTrpc/conversation.ts
generic

blinko/server/routerTrpc/message.ts at 1.8.8 · blinkospace/blinko · GitHub

https://github.com/blinkospace/blinko/blob/1.8.8/server/routerTrpc/message.ts
generic

GitHub - blinkospace/blinko: An open-source, self-hosted personal AI note tool prioritizing privacy, built using TypeScript . · GitHub

https://github.com/blinkospace/blinko
generic

Cross-User AI Conversation Read/Write via message Router IDOR · Issue #1218 · blinkospace/blinko · GitHub

https://github.com/blinkospace/blinko/issues/1218

Vendor Advisories for CVE-2026-85607(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 26× in last 7d / 64× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-21 02:21 UTCEG score recompute
  2. 2026-09-21 02:21 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 13:22 UTCGHSA enrichment
  5. 2026-09-20 00:20 UTCEG score recompute
  6. 2026-09-20 00:20 UTCGHSA enrichment
  7. 2026-09-19 11:21 UTCGHSA enrichment
  8. 2026-09-18 22:22 UTCEG score recompute
  9. 2026-09-18 22:22 UTCGHSA enrichment
  10. 2026-09-18 19:28 UTCEPSS rescore
  11. 2026-09-18 09:23 UTCGHSA enrichment
  12. 2026-09-17 20:24 UTCEG score recompute
  13. 2026-09-17 20:24 UTCGHSA enrichment
  14. 2026-09-17 19:32 UTCEPSS rescore
  15. 2026-09-17 03:52 UTCGHSA enrichment
  16. 2026-09-16 14:53 UTCEG score recompute
  17. 2026-09-16 14:53 UTCGHSA enrichment
  18. 2026-09-16 14:09 UTCEPSS rescore
  19. 2026-09-16 05:15 UTCEPSS rescore
  20. 2026-09-16 01:48 UTCGHSA enrichment
  21. 2026-09-15 12:49 UTCEG score recompute
  22. 2026-09-15 12:49 UTCGHSA enrichment
  23. 2026-09-15 03:12 UTCEPSS rescore
  24. 2026-09-15 03:12 UTCEPSS rescore
  25. 2026-09-14 23:50 UTCGHSA enrichment
Show 39 more
  1. 2026-09-14 10:51 UTCGHSA enrichment
  2. 2026-09-13 21:53 UTCEG score recompute
  3. 2026-09-13 21:53 UTCGHSA enrichment
  4. 2026-09-13 08:54 UTCGHSA enrichment
  5. 2026-09-12 19:55 UTCEG score recompute
  6. 2026-09-12 19:55 UTCGHSA enrichment
  7. 2026-09-12 06:56 UTCGHSA enrichment
  8. 2026-09-11 17:57 UTCEG score recompute
  9. 2026-09-11 17:57 UTCGHSA enrichment
  10. 2026-09-11 14:53 UTCEPSS rescore
  11. 2026-09-11 14:53 UTCEPSS rescore
  12. 2026-09-11 04:58 UTCGHSA enrichment
  13. 2026-09-10 15:59 UTCGHSA enrichment
  14. 2026-09-10 12:22 UTCEG score recompute
  15. 2026-09-10 12:22 UTCGHSA enrichment
  16. 2026-09-09 23:23 UTCGHSA enrichment
  17. 2026-09-09 07:16 UTCEG score recompute
  18. 2026-09-09 07:16 UTCGHSA enrichment
  19. 2026-09-08 22:01 UTCEPSS rescore
  20. 2026-09-08 18:17 UTCEG score recompute
  21. 2026-09-08 18:17 UTCGHSA enrichment
  22. 2026-09-08 17:04 UTCEG score recompute
  23. 2026-09-08 17:03 UTCGHSA enrichment
  24. 2026-09-08 10:24 UTCGHSA enrichment
  25. 2026-09-07 21:25 UTCEG score recompute
  26. 2026-09-07 21:24 UTCGHSA enrichment
  27. 2026-09-07 08:25 UTCGHSA enrichment
  28. 2026-09-06 19:24 UTCEG score recompute
  29. 2026-09-06 19:24 UTCGHSA enrichment
  30. 2026-09-06 13:48 UTCEPSS rescore
  31. 2026-09-06 06:24 UTCGHSA enrichment
  32. 2026-09-05 17:25 UTCEG score recompute
  33. 2026-09-05 17:25 UTCGHSA enrichment
  34. 2026-09-05 15:31 UTCEPSS rescore
  35. 2026-09-05 04:25 UTCEG score recompute
  36. 2026-09-05 04:25 UTCGHSA enrichment
  37. 2026-09-04 15:26 UTCEG score recompute
  38. 2026-09-04 14:47 UTCEG score recompute
  39. 2026-09-04 14:44 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-85607?
CVE-2026-85607 is a high vulnerability published on September 4, 2026. Blinko 1.8.7 contains an authorization bypass (IDOR) vulnerability in multiple tRPC procedures (message.list, message.update, message.delete, message.clearAfter in server/routerTrpc/message.ts and conversation.clearMessages in server/routerTrpc/conversation.ts). Although these procedures require…
When was CVE-2026-85607 disclosed?
CVE-2026-85607 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85607 actively exploited?
CVE-2026-85607 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 60.7% of all scored CVEs.
What is the CVSS score of CVE-2026-85607?
CVE-2026-85607 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-85607?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85607, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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