Search
Find a vulnerability
Search criteria
2 vulnerabilities found for wg-easy by wg-easy
CVE-2026-63089 (GCVE-0-2026-63089)
Vulnerability from nvd – Published: 2026-07-16 19:28 – Updated: 2026-07-16 19:28 X_Open Source
VLAI
EPSS
VEX
Title
WireGuard Easy Weak Token Generation Information Disclosure via OTL Route
Summary
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.
Severity
9.3 (Critical)
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/wg-easy/wg-easy/pull/2661 | issue-tracking |
| https://github.com/wg-easy/wg-easy/commit/66b292b… | patch |
| https://www.vulncheck.com/advisories/wireguard-ea… | third-party-advisory |
Impacted products
Date Public
2026-07-12 00:00
Credits
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "affected",
"product": "wg-easy",
"repo": "https://github.com/wg-easy/wg-easy",
"vendor": "wg-easy",
"versions": [
{
"lessThanOrEqual": "15.3.0",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "66b292b11bde3664f05ffb016c8082665d261ded",
"versionType": "git"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "George Chen"
}
],
"datePublic": "2026-07-12T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "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\u0027s PrivateKey and PresharedKey and impersonate that peer on the VPN network."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 9,
"baseSeverity": "CRITICAL",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "LOW",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-338",
"description": "Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)",
"lang": "en",
"type": "CWE"
},
{
"cweId": "CWE-613",
"description": "Insufficient Session Expiration",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-16T19:28:37.500Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "Pull Request",
"tags": [
"issue-tracking"
],
"url": "https://github.com/wg-easy/wg-easy/pull/2661"
},
{
"name": "Patch Commit",
"tags": [
"patch"
],
"url": "https://github.com/wg-easy/wg-easy/commit/66b292b11bde3664f05ffb016c8082665d261ded"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/wireguard-easy-weak-token-generation-information-disclosure-via-otl-route"
}
],
"source": {
"discovery": "UNKNOWN"
},
"tags": [
"x_open-source"
],
"title": "WireGuard Easy Weak Token Generation Information Disclosure via OTL Route",
"x_generator": {
"engine": "vulncheck"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-63089",
"datePublished": "2026-07-16T19:28:37.500Z",
"dateReserved": "2026-07-15T15:45:44.600Z",
"dateUpdated": "2026-07-16T19:28:37.500Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-63089 (GCVE-0-2026-63089)
Vulnerability from cvelistv5 – Published: 2026-07-16 19:28 – Updated: 2026-07-16 19:28 X_Open Source
VLAI
EPSS
VEX
Title
WireGuard Easy Weak Token Generation Information Disclosure via OTL Route
Summary
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.
Severity
9.3 (Critical)
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/wg-easy/wg-easy/pull/2661 | issue-tracking |
| https://github.com/wg-easy/wg-easy/commit/66b292b… | patch |
| https://www.vulncheck.com/advisories/wireguard-ea… | third-party-advisory |
Impacted products
Date Public
2026-07-12 00:00
Credits
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "affected",
"product": "wg-easy",
"repo": "https://github.com/wg-easy/wg-easy",
"vendor": "wg-easy",
"versions": [
{
"lessThanOrEqual": "15.3.0",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "66b292b11bde3664f05ffb016c8082665d261ded",
"versionType": "git"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "George Chen"
}
],
"datePublic": "2026-07-12T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "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\u0027s PrivateKey and PresharedKey and impersonate that peer on the VPN network."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 9,
"baseSeverity": "CRITICAL",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "LOW",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.3,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-338",
"description": "Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)",
"lang": "en",
"type": "CWE"
},
{
"cweId": "CWE-613",
"description": "Insufficient Session Expiration",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-16T19:28:37.500Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "Pull Request",
"tags": [
"issue-tracking"
],
"url": "https://github.com/wg-easy/wg-easy/pull/2661"
},
{
"name": "Patch Commit",
"tags": [
"patch"
],
"url": "https://github.com/wg-easy/wg-easy/commit/66b292b11bde3664f05ffb016c8082665d261ded"
},
{
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/wireguard-easy-weak-token-generation-information-disclosure-via-otl-route"
}
],
"source": {
"discovery": "UNKNOWN"
},
"tags": [
"x_open-source"
],
"title": "WireGuard Easy Weak Token Generation Information Disclosure via OTL Route",
"x_generator": {
"engine": "vulncheck"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-63089",
"datePublished": "2026-07-16T19:28:37.500Z",
"dateReserved": "2026-07-15T15:45:44.600Z",
"dateUpdated": "2026-07-16T19:28:37.500Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}