CVE-2025-4036: A vulnerability was found in 201206030 Novel 3.5.0 and classified as critical

Routine

MEDIUM 6.3DOWNGRADE

CVE-2025-4036 is a medium-severity flaw (CVSS 6.3) affecting novel. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 dis

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-266, CWE-284
Published	2025-04-28
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: xxyopen

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-04-28 20:15 UTCPublished CVE record published
2026-06-17 09:32 UTCUpdated Record last modified

xxyopen novel DOWNGRADE

Affected: 3.5.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.5.0

1. Check installed version

apt-cache policy novel || rpm -q novel || novel --version

2. No fixed release: DOWNGRADE to a release before 3.5.0 (Debian / Ubuntu)

apt-cache madison novel sudo apt install novel=<VERSION_BEFORE_3.5.0> sudo apt-mark hold novel

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list novel sudo dnf downgrade novel-<VERSION_BEFORE_3.5.0> sudo dnf versionlock add novel

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-4036?

novel: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-4036 being exploited?

CVE-2025-4036 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-4036 affect?

CVE-2025-4036 affects novel. Severity is medium (CVSS 6.3). 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 Chap

How urgent is CVE-2025-4036?

Priority 38/100. Public exploit reference

Software pages

Java vulnerabilities · GitHub vulnerabilities

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References

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