CVE-2025-53018Public exploitNetwork attack vector

Internal resource access via unchecked image URL fetching

Published Jun 27, 2025 · Updated Jun 27, 2025

SSRF in Lychee before 6.6.13 allows remote authenticated users to reach internal services through the Photo::fromUrl endpoint. The endpoint passes each supplied URL to fopen() without validating IP addresses or restricting destinations, timeouts, or response size. A valid session and user interaction are required; successful requests enable internal port scans or disclosure of cloud metadata.

CVSS severity2.1
Low
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Lychee before 6.6.13 allows remote authenticated users to reach internal services through the Photo::fromUrl endpoint. The endpoint passes each supplied URL to fopen() without validating IP addresses or restricting destinations, timeouts, or response size. A valid session and user interaction are required; successful requests enable internal port scans or disclosure of cloud metadata.

The record

CVE
CVE-2025-53018
Published
Jun 27, 2025
Updated
Jun 27, 2025
Vendor
LycheeOrg
Product
Lychee
Classifications
CWE-918, T1046
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 27, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 6.6.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

LycheeOrg · Lycheeversion=< 6.6.13

Published CVSS scores

3.0GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N
2.1GitHub, Inc.CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1046Network Service Discovery

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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