CVE-2026-52775Public exploitNetwork attack vector

Authenticated database read and write via unsafe LIKE

Published Sep 4, 2026 · Updated Sep 4, 2026

SQL injection in YesWiki before 4.6.6 allows remote authenticated users to read and write the database through crafted reaction paths. ReactionManager::deleteUserReaction() passes the idreaction and id path parameters into TripleStore::delete(), whose alternate branch concatenates them into an unescaped SQL LIKE clause. Any authenticated account, including a self-registered user, can reach the DELETE route and extract password hashes and email addresses or modify database records.

CVSS severity8.8
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

SQL injection in YesWiki before 4.6.6 allows remote authenticated users to read and write the database through crafted reaction paths. ReactionManager::deleteUserReaction() passes the idreaction and id path parameters into TripleStore::delete(), whose alternate branch concatenates them into an unescaped SQL LIKE clause. Any authenticated account, including a self-registered user, can reach the DELETE route and extract password hashes and email addresses or modify database records.

The record

CVE
CVE-2026-52775
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
YesWiki
Product
YesWiki
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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=< 4.6.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

YesWiki · YesWikiversion=< 4.6.6

Published CVSS scores

8.8GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
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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