PT-2026-28492 · Lychee · Lychee

Assaf + 1 · Published 2026-03-26 · Updated 2026-03-26 · CVE-2026-33537

Positive Technologies (AI Summary)

CVSS v4.0

5.3

Medium

Base vector

AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Lychee versions prior to 7.5.1

Description Lychee is a free, open-source photo-management tool. A flaw exists in the IP validation check within the patch for an SSRF issue related to Photo::fromUrl. This incomplete check fails to block loopback and link-local addresses. Before version 7.5.1, an authenticated user could access internal services using direct IP addresses, bypassing all four protection configurations, even with secure default settings.

Recommendations Update to version 7.5.1 or later.

Exploit

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2026-33537

GHSA-VQ6W-PRPF-H287

Affected Products

Lychee

References · 6

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33537.json · Exploit
• https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-vq6w-prpf-h287 · Vendor Advisory
• https://github.com/LycheeOrg/Lychee/commit/41386677681d18cd04e42a35b50bd88bf53a4a6a · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-33537 · Security Note
• https://osv.dev/vulnerability/CVE-2026-33537 · Vendor Advisory
• https://twitter.com/CVEnew/status/2037280561417592976 · Twitter Post