Server-Side Request Forgery Vulnerability in Shelf by Shelf.nu
CVE-2026-54166

7.1HIGH

Key Information:

Vendor

Shelf-nu

Status
Shelf.nu
Vendor
CVE Published:
11 September 2026

What is CVE-2026-54166?

The Shelf platform allows authenticated users with the asset:import permission to exploit a flaw in the Asset CSV Content Import feature. Before version 1.20.3, the validation logic for imageUrl was inadequate, enabling attackers to bypass the security measures using various techniques, such as through image extension suffixes and redirect chains. This addiction resulted in a Server-Side Request Forgery (SSRF), allowing attackers access to internal network services and arbitrary endpoints. Additionally, the platform's response size validation issues may lead to memory exhaustion, further complicating the threat landscape. The vulnerability has been resolved in version 1.20.3.

Affected Version(s)

shelf.nu < 1.20.3

References

https://github.com/Shelf-nu/shelf.nu/security/advisories/...
x_refsource_CONFIRM

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.