CVE-2026-123677Proof of concept (PoC) published · CISA

xxyopen/201206030 novel Book Chapter Read BookServiceImpl.java getBookChapter authorization

CVSS score

5.3

EPSS probability

—

Risk score

0.5

Published

1 d ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

Impact on My Inventory

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Vulnerability description

DayBreach AI Explanation

Verified against sources

CVE-2026-123677: xxyopen/201206030 novel BookServiceImpl.java Authorization Bypass Vulnerability

Sources read

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

An authorization bypass vulnerability exists in xxyopen/201206030 novel up to version 3.5.0. Affecting the getBookChapter function in BookServiceImpl.java, this vulnerability can be triggered remotely by manipulating the chapterId argument.

Why does it matter?

This vulnerability can lead to an authorization bypass, potentially allowing attackers to access restricted information without proper verification.

What should be done?

Apply the patch named b8134e774820e0971fa9d8074405b49a01c99bdc
Follow the vendor advisory

Chain of evidence and sources2 verified claims

xxyopen/201206030 novel sürümleri 3.5.0 ve öncesinde yetkilendirme atlatma zafiyeti bulunmaktadır.

S0 · daybreach-canonical S1 · cvelist

Zafiyet için b8134e774820e0971fa9d8074405b49a01c99bdc adlı yama mevcuttur.

S0 · daybreach-canonical S1 · cvelist

Show the technical text from the sources

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.

CVSS vector: 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

CWE: CWE-639, CWE-285

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-123677 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	xxyopen	novel	View
2	201206030	novel	View

Total affected vendors: 2|Products: 2

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
5.3	CVSS V4_0	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	CVE CNA
4.3	CVSS V3_1	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	CVE CNA
4.3	CVSS V3_0	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	CVE CNA
4.3	CVSS V31	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	NVD
4.0	CVSS V2_0	—	AV:N/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:OF/RC:C	CVE CNA
4.0	CVSS V2	—	AV:N/AC:L/Au:S/C:P/I:N/A:N	NVD
2.1	CVSS V40	LOW	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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X	NVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

4 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

cvelist

CNA çözüm referansı

Open source

cvelist

CNA çözüm referansı

Open source

reference

Yama veya çözüm referansı

Open source

reference

Yama veya çözüm referansı

Open source

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Apply the official update named in the evidence only to the matching product and version.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-123677 is associated with the following CWEs:

CWE-639: Common Weakness Enumeration Entry CWE-639 CWE-285: Common Weakness Enumeration Entry CWE-285

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-123677 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsLow

UserGerekmiyor

Official Sources and Advisories

VDB-431794 | xxyopen/201206030 novel Book Chapter Read BookServiceImpl.java getBookChapter authorizationvendor-advisory VDB-431794 | CTI Indicators (IOB, IOC, IOA)vendor-advisory CVE-2026-123677 | CVE Analysis and Reportvendor-advisory Submit #1033604 | https://github.com/201206030/ novel 3.5.0 Authorization Bypass Through User-Controlled Keyvendor-advisory https://github.com/201206030/novel/pull/51patch https://github.com/201206030/novel/commit/b8134e774820e0971fa9d8074405b49a01c99bdcpatch

CVSS Vector Radar Chart

5.3 / 10

Vulnerability Scoring Details

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

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow privileges

User InteractionNone required

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)None

Availability (Erişilebilirlik)None

Yama doğrulandı

4 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

xxyopen

201206030

Weakness Type (CWE & CAPEC)

CWE-639 CWE-285

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6.1

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Patch status unknown Public Exploits:2EPSS %010 mo ago

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xxyopen/201206030 novel Book Chapter Read BookServiceImpl.java getBookChapter authorization

Impact on My Inventory

Vulnerability description

DayBreach AI Explanation

Short explanation

What should be done?

IMPACT: Affected Products and Software

Affected Products

RED HAT CSAF/VEX: Product Impact Check

SCORING: CVSS from Multiple Sources

CVSS Scores

Patch and Remediation Guide

Solution & Remediation Advisory

Public exploit and active exploitation status

Verified exploit intelligence

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

Common Attack Pattern Enumeration and Classification (CAPEC)

Attack Vector and Accessibility

Official Sources and Advisories

CVSS Vector Radar Chart

Vulnerability Scoring Details

Weakness Type (CWE & CAPEC)

Similar Vulnerabilities

Get this vulnerability through the API

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