Lychee is a free, open-source photo-management tool. Prior to version 7.5.3, the photo description field is stored without HTML sanitization and rendered using {!! $item->summary !!} (Blade unescaped output) in the RSS, Atom, and JSON feed templates. The /feed endpoint is publicly accessible without authentication, allowing any RSS reader to execute attacker-controlled JavaScript. Version 7.5.3 fixes the issue.
{
"cwe_ids": [
"CWE-79"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33738.json",
"cna_assigner": "GitHub_M"
}{
"cpe": "cpe:2.3:a:lycheeorg:lychee:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "7.5.3"
}
],
"source": [
"AFFECTED_FIELD",
"CPE_RANGE",
"REFERENCES"
]
}