CVE-2026-57569Network attack vectorHinoki check available

Authenticated SSRF via unpinned DNS resolution

Published Oct 15, 2026 · Updated Oct 15, 2026

SSRF in Lychee before 7.6.0 allows remote authenticated users to reach internal services through DNS rebinding during URL imports. PhotoUrlRule.php checks resolved addresses, but FromUrl.php passes the original hostname to DownloadedFile.php, whose fopen connection resolves it again without pinning the validated address. Exploitation requires control of DNS responses and URL-import access; reachable destinations depend on deployment and TLS behavior.

CVSS severity2.3
Low
EPSS probability0.24%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

SSRF in Lychee before 7.6.0 allows remote authenticated users to reach internal services through DNS rebinding during URL imports. PhotoUrlRule.php checks resolved addresses, but FromUrl.php passes the original hostname to DownloadedFile.php, whose fopen connection resolves it again without pinning the validated address. Exploitation requires control of DNS responses and URL-import access; reachable destinations depend on deployment and TLS behavior.

The record

CVE
CVE-2026-57569
Published
Oct 15, 2026
Updated
Oct 15, 2026
Vendor
LycheeOrg
Product
Lychee
Classifications
Unavailable
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 2026Record 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=< 7.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

LycheeOrg · Lycheeversion=< 7.6.0

Published CVSS scores

2.3LycheeOrgCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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