CVE-2026-54452

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-54452
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54452.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-54452
Aliases
Downstream
Related
Published
2026-09-14T16:14:32Z
Modified
2026-09-18T03:30:15Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N CVSS Calculator
Summary
safeurl: Missing IPv6 CIDR Ranges in Blocklist
Details

safeurl is a server-side request forgery protection library. Prior to 0.2.4, the privateNetworks list in ip.go omits the IPv6 ranges 64:ff9b:1::/48, 5f00::/16, 3fff::/20, and 100:0:0:1::/64. When an application enables IPv6 with EnableIPv6(true), an attacker-controlled destination in one of these ranges is not recognized as non-public and can pass the SSRF destination check, potentially allowing access to resources hosted within the omitted ranges. IPv6 is disabled by default, and configurations that retain EnableIPv6(false) are not exposed to this bypass. This issue is fixed in version 0.2.4.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54452.json"
}
References

Affected packages

Git / github.com/doyensec/safeurl

Affected ranges

Type
GIT
Repo
https://github.com/doyensec/safeurl
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
d8f1021ea535b276f92999f0ec865da40e467016
Fixed
a2c2075accde3e6448d6aaa9d6048fda6997d994
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.2.4"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v0.*
v0.1.0
v0.2.0
v0.2.1
v0.2.2
v0.2.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54452.json"