CVE-2026-52771

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Source
https://cve.org/CVERecord?id=CVE-2026-52771
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52771.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-52771
Aliases
Published
2026-09-04T23:41:34.061Z
Modified
2026-09-06T03:46:13.663941874Z
Severity
  • 8.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L CVSS Calculator
Summary
YesWiki: Second-Order SQL Injection in Page Delete API via Unescaped Page Tag (`ApiController::deletePage`)
Details

YesWiki is a wiki system written in PHP. From version 4.2.0 to before version 4.6.6, ApiController::deletePage() interpolates a page tag retrieved from the database into a DELETE FROM …links WHERE totag = '$tag' query without escaping. The page tag is attacker-controlled — the POST /api/pages/{tag} API accepts arbitrary URL-encoded values, including single quotes, and stores them. A low-privilege authenticated user can therefore create a page whose tag is a SQL fragment, make the page non-orphaned via the standard {{include page="…"}} link mechanism, and then invoke the delete endpoint to execute arbitrary SQL inside the wiki database - including time-based blind data exfiltration from any table. This issue has been patched in version 4.6.6.

Database specific 
{
    "cwe_ids": [
        "CWE-89"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52771.json"
}
References

Affected packages

Git / github.com/yeswiki/yeswiki

Affected ranges

Type
GIT
Repo
https://github.com/yeswiki/yeswiki
Events
Introduced
db3ec4d4a14a75bc38f71a1009b8731b7e58f5dd
Fixed
fa81922f4103630911cbea98ead3c4b7bc786e19
Database specific
Show details 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "4.2.0"
        },
        {
            "fixed": "4.6.6"
        }
    ]
}

Affected versions

v4.*
v4.2.0
v4.2.1
v4.2.2
v4.3.0
v4.3.1
v4.4.0
v4.4.1
v4.4.2
v4.4.3
v4.5.1
v4.5.2
v4.5.3
v4.5.4
v4.5.5
v4.6.0
v4.6.2
v4.6.3
v4.6.4
v4.6.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52771.json"