CVE-2026-54166 Shelf - Server-Side Request Forgery

Shelf prior to version 1.20.3 contains a server-side request forgery caused by bypassing imageUrl validation in the Asset CSV Content Import feature, letting authenticated users with asset:import permission make arbitrary server requests, exploit requires authenticated user with asset:import permission.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.43% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Server-Side Request Forgery
Impact
Server Side Request Forgery, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
Published
11 September 2026
Updated
15 October 2026
Weakness
CWE-918

Vendor fix

Update to version 1.20.3 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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