# CVE-2026-123677: xxyopen/201206030 novel Book Chapter Read BookServiceImpl.java getBookChapter authorization

Status: published. Published: 2026-11-06. Updated: 2026-11-06.

A vulnerability was found in xxyopen/201206030 novel up to 3.5.0. Affected is the function getBookChapter of the file src/main/java/io/github/xxyopen/novel/service/impl/BookServiceImpl.java of the component Book Chapter Read Handler. Performing a manipulation of the argument chapterId results in authorization bypass. The attack may be initiated remotely. The exploit has been made public and could be used. The patch is named b8134e774820e0971fa9d8074405b49a01c99bdc. It is suggested to install a patch to address this issue.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulDB) — https://github.com/201206030/novel/pull/51
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulDB) — https://github.com/201206030/novel/commit/b8134e774820e0971fa9d8074405b49a01c99bdc

## Affected products and versions

- xxyopen / novel: 3.0 (affected); 3.1 (affected); 3.2 (affected); 3.3 (affected); 3.4 (affected); 3.5.0 (affected). Source: CNA: VulDB
- 201206030 / novel: 3.0 (affected); 3.1 (affected); 3.2 (affected); 3.3 (affected); 3.4 (affected); 3.5.0 (affected). Source: CNA: VulDB

## Severity and prioritization

- CVSS 4.0: 5.3 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P; source: CNA: VulDB

- CVSS 3.1: 4.3 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C; source: CNA: VulDB

- CVSS 3.0: 4.3 (medium); CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C; source: CNA: VulDB

- CVSS 2.0: 4 (medium); AV:N/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:OF/RC:C; source: CNA: VulDB

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation poc; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-639, CWE-285

## Exploit evidence

- exploit: https://github.com/201206030/novel/pull/51 (CNA: VulDB)

## References

- https://vuldb.com/vuln/431794 (CNA: VulDB; vdb-entry, technical-description)

- https://vuldb.com/vuln/431794/cti (CNA: VulDB; signature, permissions-required)

- https://vuldb.com/cve/CVE-2026-123677 (CNA: VulDB; third-party-advisory)

- https://vuldb.com/submit/1033604 (CNA: VulDB; third-party-advisory)

- https://github.com/201206030/novel/pull/51 (CNA: VulDB; exploit, issue-tracking, patch)

- https://github.com/201206030/novel/commit/b8134e774820e0971fa9d8074405b49a01c99bdc (CNA: VulDB; patch)

## Provenance

- CNA: VulDB: https://www.cve.org/CVERecord?id=CVE-2026-123677; retrieved 2026-11-06; source updated 2026-11-06

Revision: 3a86eeb7db54a8e7d11063393089b1c816b56013fb93a4bdfa7bef494ceb3432

Canonical: https://y2.dev/cve/CVE-2026-123677

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