CVE-2026-2549Public exploitNetwork attack vector

Unauthenticated administrative CRUD via missing authorization

Published Feb 16, 2026 · Updated Feb 16, 2026

Missing authorization in zhanghuanhao LibrarySystem's BookController 1.1.0 and 1.1.1 allows remote attackers to alter library records. The application exposes /admin_books.html and BookController CRUD operations without a global permission interceptor or login check. An unauthenticated network request reaches the administrative backend, enabling creation, reading, modification, and deletion of book data.

CVSS severity7.3
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in zhanghuanhao LibrarySystem's BookController 1.1.0 and 1.1.1 allows remote attackers to alter library records. The application exposes /admin_books.html and BookController CRUD operations without a global permission interceptor or login check. An unauthenticated network request reaches the administrative backend, enabling creation, reading, modification, and deletion of book data.

The record

CVE
CVE-2026-2549
Published
Feb 16, 2026
Updated
Feb 16, 2026
Vendor
zhanghuanhao
Product
LibrarySystem
Classifications
CWE-284, CWE-266, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.1.0
  2. Affected versionversion=1.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

zhanghuanhao · LibrarySystemversion=1.1.0; version=1.1.1

Published CVSS scores

5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-266Incorrect Privilege Assignment
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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