CVE-2026-54452
Published:July 15, 2026
Updated:August 02, 2026
The "privateNetworks" blocklist was found to be missing newly added CIDR ranges. More specifically, the following CIDR ranges were not being blocked: - "64:ff9b:1::/48": NAT64 local-use prefix (RFC 8215) - "5f00::/16": Segment Routing (SRv6) SIDs (RFC 9602) - "3fff::/20": documentation prefix (RFC 9637) - "100:0:0:1::/64": Dummy IPv6 Prefix (RFC 9780) Impact If exploited, an attacker would potentially be able to reach resources hosted on the IPs residing in the missing ranges. Workarounds Disable IPv6 by setting "EnableIPv6(false)". This is the default behavior of the library. Resolution Upgrade to v0.2.4 Credits safeurl thanks @tonghuaroot for reporting.
Affected Packages
github.com/doyensec/safeurl (GO):
Affected version(s) >=v0.0.0-20221213125119-371971bfac2c <v0.2.4Fix Suggestion:
Update to version v0.2.4Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Server-Side Request Forgery (SSRF)