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CVE-2025-53018— Lychee has Server-Side Request Forgery (SSRF) in Photo::fromUrl API via unvalidated remote image URLs

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 6.6.13之前版本存在安全漏洞，该漏洞源于/api/v2/Photo::fromUrl端点存在服务端请求伪造，可能导致内部网络资源访问。

CVSS 3.0 · Low EPSS 0.20% · P9
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I. Basic Information for CVE-2025-53018

Vulnerability Information
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Vulnerability Title
Lychee has Server-Side Request Forgery (SSRF) in Photo::fromUrl API via unvalidated remote image URLs
Source: CVE Program / CVE List V5
Vulnerability Description
Lychee is a free, open-source photo-management tool. Prior to version 6.6.13, a critical Server-Side Request Forgery (SSRF) vulnerability exists in the `/api/v2/Photo::fromUrl` endpoint. This flaw lets an attacker instruct the application’s backend to make HTTP requests to any URL they choose. Consequently, internal network resources—such as localhost services or cloud-provider metadata endpoints—become reachable. The endpoint takes a URL from the user and calls it server-side via fopen() without any safeguards. There is no IP address validation, nor are there any allow-list, timeout, or size restrictions. Because of this, attackers can point the application at internal targets. Using this flaw, an attacker can perform internal port scans or retrieve sensitive cloud metadata. Version 6.6.13 contains a patch for the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Lychee 安全漏洞
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 6.6.13之前版本存在安全漏洞，该漏洞源于/api/v2/Photo::fromUrl端点存在服务端请求伪造，可能导致内部网络资源访问。
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 < 6.6.13 -

II. Public POCs for CVE-2025-53018

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III. Intelligence Information for CVE-2025-53018

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Vendor Advisories for CVE-2025-53018 (1)

IV. Related Vulnerabilities

Same product: Lychee
Same vendor: LycheeOrg
Same weakness: CWE-918

V. Comments for CVE-2025-53018

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