CVE-2026-33537 | Lychee up to 7.5.0 Photo::fromUrl server-side request forgery (GHSA-vq6w-prpf-h287)

VDB-353776 · CVE-2026-33537 · GHSA-VQ6W-PRPF-H287 LYCHEE UP TO 7.5.0 PHOTO::FROMURL SERVER-SIDE REQUEST FORGERY HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.0 $0-$5k 2.57+ Summaryinfo A vulnerability labeled as critical has been found in Lychee up to 7.5.0. Impacted is the function Photo::fromUrl. Executing a manipulation can lead to server-side request forgery. This vulnerability is handled as CVE-2026-33537. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded. Detailsinfo A vulnerability has been found in Lychee up to 7.5.0 and classified as critical. This vulnerability affects the function Photo::fromUrl. The manipulation with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes: Lychee is a free, open-source photo-management tool. The patch introduced for GHSA-cpgw-wgf3-xc6v (SSRF via `Photo::fromUrl`) contains an incomplete IP validation check that fails to block loopback addresses and link-local addresses. Prior to version 7.5.1, an authenticated user can still reach internal services using direct IP addresses, bypassing all four protection configuration settings even when they are set to their secure defaults. Version 7.5.1 contains a fix for the issue. The advisory is shared for download at github.com. This vulnerability was named CVE-2026-33537 since 03/20/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. Upgrading to version 7.5.1 eliminates this vulnerability. Applying the patch 41386677681d18cd04e42a35b50bd88bf53a4a6a is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. Productinfo Name Lychee Version 7.0 7.1 7.2 7.3 7.4 7.5.0 License open-source CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 6.3 VulDB Meta Temp Score: 6.0 VulDB Base Score: 6.3 VulDB Temp Score: 6.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Server-side request forgery CWE: CWE-918 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Lychee 7.5.1 Patch: 41386677681d18cd04e42a35b50bd88bf53a4a6a Timelineinfo 03/20/2026 CVE reserved 03/26/2026 +6 days Advisory disclosed 03/26/2026 +0 days VulDB entry created 03/26/2026 +0 days VulDB entry last update Sourcesinfo Advisory: GHSA-vq6w-prpf-h287 Status: Confirmed CVE: CVE-2026-33537 (🔒) GCVE (CVE): GCVE-0-2026-33537 GCVE (VulDB): GCVE-100-353776 Entryinfo Created: 03/26/2026 23:18 Changes: 03/26/2026 23:18 (69) Complete: 🔍 Cache ID: 99:C7D:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸