Home/CVE/An improper input validation, together with an overly permissive default CORS configuration in Open Notebook v1.8.1 allo
CVE

CVE-2026-28201

An improper input validation, together with an overly permissive default CORS configuration in Open Notebook v1.8.1 allo

An improper input validation, together with an overly permissive default CORS configuration in Open Notebook v1.8.1 allows remote attacker to trick a legitimate user to alter or delete arbitrary database entries via specially crafted malicious URL. Depending on the deployment, data exfiltration is also possible.

HIGH · CVSS 7.8 EPSS 0.00056
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
CWE-352Cross-Site Request Forgery (CSRF)
CWE-917Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
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Affected Products & Versions

1
lfnovo open-notebook< 1.8.3
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Scoring & Timeline

7.8
HIGH · CVSS v3.1 · a6d3dc9e-0591-4a13-bce7-0f5b31ff6158
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD07 May 2026 · 11:16 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/lfnovo/open-notebook/security/advisories/GHSA-5wj9-f8q5-8f9cVendor Advisory
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