How severe is CVE-2026-28201?

CVE-2026-28201 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-28201 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28201?

CVE-2026-28201 affects Lfnovo Open-notebook. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28201?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-28201 have an EU (EUVD) identifier?

Yes. CVE-2026-28201 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28345.

When was CVE-2026-28201 published?

CVE-2026-28201 was published on 2026-05-07 and last updated on 2026-06-17.

CVE-2026-28201

CVE-2026-28201 is a high-severity vulnerability in Lfnovo Open-notebook with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 8.7
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-28345
Weakness: CWE-20
Affected product: Lfnovo Open-notebook
Published: 2026-05-07
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-28201?: 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.
How severe is CVE-2026-28201?: CVE-2026-28201 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-28201 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28201?: CVE-2026-28201 affects Lfnovo Open-notebook. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28201?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-28201 have an EU (EUVD) identifier?: Yes. CVE-2026-28201 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28345.
When was CVE-2026-28201 published?: CVE-2026-28201 was published on 2026-05-07 and last updated on 2026-06-17.

References

https://github.com/lfnovo/open-notebook/security/advisories/GHSA-5wj9-f8q5-8f9c

Affected products (1)

cpe:2.3:a:lfnovo:open-notebook:*:*:*:*:*:*:*:*

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