YesWiki is a wiki system written in PHP. Prior to version 4.6.0, a stored and blind XSS vulnerability exists in the form title field. A malicious attacker can inject JavaScript without any authentication via a form title that is saved in the backend database. When any user visits that injected page, the JavaScript payload gets executed. This issue has been patched in version 4.6.0.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-79",
"CWE-87"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34598.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "4.6.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"original_tag": "v4.6.0",
"range": [
{
"fixed": "fa94a53f810918f02a8da7138c066eee5dc68b0c"
}
],
"source": "REFERENCES_TAG"
},
{
"cpe": "cpe:2.3:a:yeswiki:yeswiki:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "4.6.0"
}
],
"source": "CPE_RANGE"
}
]
}