Medium 5.3Published Mar 26, 2026

CVE-2026-33537Lychee has SSRF bypass via incomplete IP validation in Photo::fromUrl — loopback and link-local IPs not blocked

Updated under an hour ago (Oct 27, 2026, 10:23 AM ET)

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It affects LycheeOrg Lychee. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for LycheeOrg Lychee

Exploited in the last 30 days

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.

CVSS: 5.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
Weakness (CWE): CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

LycheeOrg Lychee lycheeorg:lychee (from the name)	before 7.5.1	CNA record
lycheeorg lychee lycheeorg:lychee	before 7.5.1	NVD

References

References

https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-vq6w-prpf-h287	x-refsource-confirm, exploit, mitigation, patch, vendor-advisory
https://github.com/LycheeOrg/Lychee/commit/41386677681d18cd04e42a35b50bd88bf53a4a6a	x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.