CVE-2026-50887Public exploitNetwork attack vector

Internal service scanning via unchecked title resolution

Published Jun 15, 2026 · Updated Jun 15, 2026

SSRF in Shlink 5.0.1 allows remote authenticated users to query internal HTTP services through automatic URL-title resolution. When AUTO_RESOLVE_TITLES is enabled and a request omits a title, the create or edit flow passes the user-controlled longUrl to an HTTP client without blocking internal addresses. A valid API key is required; the server issues the GET request and exposes selected response content through the extracted page title.

CVSS severity9.1
Critical
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Shlink 5.0.1 allows remote authenticated users to query internal HTTP services through automatic URL-title resolution. When AUTO_RESOLVE_TITLES is enabled and a request omits a title, the create or edit flow passes the user-controlled longUrl to an HTTP client without blocking internal addresses. A valid API key is required; the server issues the GET request and exposes selected response content through the extracted page title.

The record

CVE
CVE-2026-50887
Published
Jun 15, 2026
Updated
Jun 15, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-918, T1046
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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.

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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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