Vulnerability · Published Sep 4, 2026 · Assigned by GitHub_M

CVE-2026-52770Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in yeswiki/yeswiki

High 7.5

In plain English

A high-severity SQL injection in yeswiki from YesWiki. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.5%top 59.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

YesWiki is a wiki system written in PHP. Prior to version 4.6.6, YesWiki’s public Bazar entry-listing APIs are vulnerable to unauthenticated SQL injection in numeric query / queries filters. For Bazar fields whose value structure is numeric, YesWiki escapes the attacker-controlled filter value but inserts it into SQL without quotes or numeric validation. An unauthenticated attacker can inject boolean SQL expressions and infer database contents from whether entries are returned. This issue has been patched in version 4.6.6.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	yeswiki/yeswiki	4.6.6	GHSA-qg78-vmvc-fhjw

Affected products (as reported)

Vendor	Product	Versions
YesWiki	yeswiki	< 4.6.6

Weakness: CWE-89 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

https://github.com/YesWiki/yeswiki/security/advisories/GHSA-qg78-vmvc-fhjw x_refsource_CONFIRM
https://github.com/YesWiki/yeswiki/commit/f3b0dd093a7ace47dc29a515faeb02635baceae2 x_refsource_MISC
https://github.com/YesWiki/yeswiki/releases/tag/v4.6.6 x_refsource_MISC