How severe is CVE-2025-4036?

CVE-2025-4036 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-4036 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-4036?

CVE-2025-4036 affects Xxyopen Novel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-4036?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-4036 have an EU (EUVD) identifier?

Yes. CVE-2025-4036 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15013.

When was CVE-2025-4036 published?

CVE-2025-4036 was published on 2025-04-28 and last updated on 2026-06-17.

CVE-2025-4036

CVE-2025-4036 is a medium-severity vulnerability in Xxyopen Novel with a CVSS 3.x base score of 6.3. 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-266.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 5.3
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-15013
Weakness: CWE-266
Affected product: Xxyopen Novel
Published: 2025-04-28
Last modified: 2026-06-17

Description

A vulnerability was found in 201206030 Novel 3.5.0 and classified as critical. This issue affects the function updateBookChapter of the file src/main/java/io/github/xxyopen/novel/controller/author/AuthorController.java of the component Chapter Handler. The manipulation leads to improper access controls. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2025-4036?: A vulnerability was found in 201206030 Novel 3.5.0 and classified as critical. This issue affects the function updateBookChapter of the file src/main/java/io/github/xxyopen/novel/controller/author/AuthorController.java of the component Chapter Handler. The manipulation leads to improper access controls. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2025-4036?: CVE-2025-4036 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-4036 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-4036?: CVE-2025-4036 affects Xxyopen Novel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-4036?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-4036 have an EU (EUVD) identifier?: Yes. CVE-2025-4036 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-15013.
When was CVE-2025-4036 published?: CVE-2025-4036 was published on 2025-04-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:xxyopen:novel:3.5.0:*:*:*:*:*:*:*

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