CVE-2026-23488

Blinko is an AI-powered card note-taking project. Prior to version 1.8.4, the /api/v1/comment/create endpoint has an unauthorized access vulnerability, allowing attackers to post comments on any note (including private notes) without authorization, even if the note has not been publicly shared. The /api/v1/comment/list endpoint has the same issue, allowing unauthorized viewing of comments on all notes. This issue has been patched in version 1.8.4.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/blinkospace/blinko/commit/4623dd02bdeed768ffa6fea4cc2f8644cbb08c5e	Patch
https://github.com/blinkospace/blinko/pull/1089	Release Notes
https://github.com/blinkospace/blinko/releases/tag/1.8.4	Release Notes
https://github.com/blinkospace/blinko/security/advisories/GHSA-84hm-vw62-472m	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:blinko:blinko:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-23 21:17

Updated : 2026-03-24 18:03

NVD link : CVE-2026-23488

Mitre link : CVE-2026-23488

CVE.ORG link : CVE-2026-23488

JSON object : View

Products Affected

blinko

blinko

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

{"id": "CVE-2026-23488", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.9, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-03-23T21:17:03.277", "references": [{"url": "https://github.com/blinkospace/blinko/commit/4623dd02bdeed768ffa6fea4cc2f8644cbb08c5e", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/blinkospace/blinko/pull/1089", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/blinkospace/blinko/releases/tag/1.8.4", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/blinkospace/blinko/security/advisories/GHSA-84hm-vw62-472m", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-639"}]}], "descriptions": [{"lang": "en", "value": "Blinko is an AI-powered card note-taking project. Prior to version 1.8.4, the /api/v1/comment/create endpoint has an unauthorized access vulnerability, allowing attackers to post comments on any note (including private notes) without authorization, even if the note has not been publicly shared. The /api/v1/comment/list endpoint has the same issue, allowing unauthorized viewing of comments on all notes. This issue has been patched in version 1.8.4."}, {"lang": "es", "value": "Blinko es un proyecto de toma de notas en tarjetas impulsado por IA. Antes de la versi\u00f3n 1.8.4, el endpoint /api/v1/comment/create tiene una vulnerabilidad de acceso no autorizado, permitiendo a los atacantes publicar comentarios en cualquier nota (incluidas las notas privadas) sin autorizaci\u00f3n, incluso si la nota no ha sido compartida p\u00fablicamente. El endpoint /api/v1/comment/list tiene el mismo problema, permitiendo la visualizaci\u00f3n no autorizada de comentarios en todas las notas. Este problema ha sido parcheado en la versi\u00f3n 1.8.4."}], "lastModified": "2026-03-24T18:03:46.747", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:blinko:blinko:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "31941A3D-C688-40DF-AA55-1AF9056275D0", "versionEndExcluding": "1.8.4"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}