CVE-2026-63089

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Source
https://cve.org/CVERecord?id=CVE-2026-63089
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63089.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-63089
Published
2026-07-16T19:28:37.500Z
Modified
2026-07-19T03:31:11.441597275Z
Severity
  • 9.0 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:L/SA:N CVSS Calculator
Summary
WireGuard Easy Weak Token Generation Information Disclosure via OTL Route
Details

WireGuard Easy through 15.3.0, fixed in commit 66b292b, contains a cryptographically weak one-time link token generation vulnerability that allows unauthenticated network attackers to recover WireGuard peer credentials by brute-forcing a keyspace of at most 1000 candidate tokens per client ID, as the token is computed using CRC32 over a random value constrained to 0-999. Attackers can enumerate candidate tokens against the unauthenticated /cnf/:oneTimeLink route, which lacks rate limiting and does not validate token expiration, to obtain a peer's PrivateKey and PresharedKey and impersonate that peer on the VPN network.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63089.json",
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-338",
        "CWE-613"
    ]
}
References

Affected packages

Git / github.com/wg-easy/wg-easy

Affected ranges

Type
GIT
Repo
https://github.com/wg-easy/wg-easy
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
2dc8ba779216929c10c1998341d36963fe0eca7a
Fixed
66b292b11bde3664f05ffb016c8082665d261ded
Database specific 
{
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "15.3.0"
        }
    ]
}

Affected versions

v12.*
v12.0.0
v15.*
v15.0.0
v15.0.0-beta.1
v15.0.0-beta.10
v15.0.0-beta.11
v15.0.0-beta.12
v15.0.0-beta.13
v15.0.0-beta.2
v15.0.0-beta.3
v15.0.0-beta.4
v15.0.0-beta.5
v15.0.0-beta.6
v15.0.0-beta.7
v15.0.0-beta.8
v15.0.0-beta.9
v15.1.0
v15.2.0
v15.2.0-beta.1
v15.2.0-beta.2
v15.2.0-beta.3
v15.2.1
v15.2.2
v15.3.0
v15.3.0-beta.1
v15.3.0-beta.2
v15.3.0-beta.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63089.json"