Cyber Resilience

CVE-2026-50887

Critical

Published: 15 June 2026

Published
15 June 2026
Modified
17 June 2026
KEV Added
—
Patch
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CVSS Score v3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS Score 0.0029 20.5th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-50887 is a critical-severity SSRF (CWE-918) vulnerability. Its CVSS base score is 9.1 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Network Service Discovery (T1046); ranked at the 20.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability details

A Server-Side Request Forgery (SSRF) in the automatic short URL title resolution component of shlink v5.0.1 allows attackers to scan internal resources via supplying a crafted longUrl.

CWE(s)
CWE-918

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1046 Network Service Discovery Discovery
Adversaries may attempt to get a listing of services running on remote hosts and local network infrastructure devices, including those that may be vulnerable to remote software exploitation.
attack.mitre.org →
T1595.002 Vulnerability Scanning Reconnaissance
Adversaries may scan victims for vulnerabilities that can be used during targeting.
attack.mitre.org →
Why these techniques?

SSRF directly enables internal network service discovery and vulnerability scanning by allowing crafted requests to internal resources.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

Affected Assets

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing
addresses: CWE-918

Penetration testing attempts server-side requests to internal resources, identifying SSRF weaknesses for remediation.

SC-7 Boundary Protection
addresses: CWE-918

Outbound connections to external resources can be monitored and limited at the boundary, reducing SSRF impact.

SI-10 Information Input Validation
addresses: CWE-918

Validates server-side URLs and resource references to block SSRF attempts.

SI-4 System Monitoring
addresses: CWE-918

Detects server-side request forgery through monitoring of unexpected outbound connections.

References