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    CVE-2026-33644

    Lychee is a free, open-source photo-management tool. Prior to version 7.5.2, the SSRF protection in `PhotoUrlRule.php` can be bypassed using DNS rebinding. The IP validation check (line 86-89) only activates when the hostname is an IP address. When a domain name is used, `filter_var($host, FILTER_VALIDATE_IP)` returns `false`, skipping the entire check. Version 7.5.2 patches the issue.

    Published:Mar 26, 2026
    Last Modified:Mar 30, 2026
    EPS:Mar 26, 2026
    EPSS Score:0.00038
    CVSS Score:4.3

    Affected Products

    Vendor
    Lycheeorg
    Product
    Lychee

    Exploits

    https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-5245-4p8c-jwff

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-664 Server Side Request Forgery

    Related CVEs

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    CVE-2025-53018 (CVSS 3) — Lychee is a free, open-source photo-management tool. Prior to version 6.6.13, a critical Server-Side Request F…
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    CVE-2024-25807 (CVSS 6.1) — Cross Site Scripting (XSS) vulnerability in Lychee 3.1.6, allows remote attackers to execute arbitrary code an…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High