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CVE-2026-33738— Lychee Vulnerable to Stored XSS via Photo Description in RSS/Atom/JSON Feed (No Sanitization on Public Endpoint)

Quick assessment

Affected
LycheeOrg Lychee
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Lychee是The Lychee Organisation开源的一个漂亮且易于使用的照片管理系统。用于管理和共享照片。 Lychee 7.5.3之前版本存在跨站脚本漏洞，该漏洞源于照片description字段存储时未进行HTML清理，可能导致跨站脚本攻击。

AI Predicted 6.1 Difficulty: Easy EPSS 0.36% · P28
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I. Basic Information for CVE-2026-33738

Vulnerability Information
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Vulnerability Title
Lychee Vulnerable to Stored XSS via Photo Description in RSS/Atom/JSON Feed (No Sanitization on Public Endpoint)
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:H/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Lychee 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Lychee是The Lychee Organisation开源的一个漂亮且易于使用的照片管理系统。用于管理和共享照片。 Lychee 7.5.3之前版本存在跨站脚本漏洞，该漏洞源于照片description字段存储时未进行HTML清理，可能导致跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
LycheeOrg Lychee < 7.5.3 -

II. Public POCs for CVE-2026-33738

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III. Intelligence Information for CVE-2026-33738

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Patches & Fixes for CVE-2026-33738 (2)

Vendor Advisories for CVE-2026-33738 (1)

Vendor Pages for CVE-2026-33738 (1)

Same Patch Batch · LycheeOrg · 2026-03-26 · 3 CVEs total

CVE-2026-33644 Lychee has SSRF bypass via DNS rebinding — PhotoUrlRule only validates IP addresses, not h
CVE-2026-33537 Lychee has SSRF bypass via incomplete IP validation in Photo::fromUrl — loopback and link-

IV. Related Vulnerabilities

Same product: Lychee
Same vendor: LycheeOrg
Same weakness: CWE-79

V. Comments for CVE-2026-33738

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