CVE-2026-48860 (GCVE-0-2026-48860)
Vulnerability from cvelistv5 – Published: 2026-06-10 14:35 – Updated: 2026-09-24 20:39
VLAI
EPSS
VEX
Title
Distribution-over-TLS LAN allowlist silently bypassed due to sockname/peername confusion in inet_tls_dist
Summary
Reliance on IP Address for Authentication vulnerability in Erlang/OTP ssl (inet_tls_dist module) allows unauthenticated bypass of the distribution-over-TLS LAN allowlist.
The inet_tls_dist:check_ip/1 function, which enforces a LAN allowlist for Erlang distribution over TLS, calls inet:sockname/1 instead of inet:peername/1 to obtain the peer's IP address. Because inet:sockname/1 returns the local socket address, both the local IP and the supposed peer IP resolve to the same value, causing the subnet mask comparison to always succeed regardless of the actual remote address. Any holder of a CA-signed TLS certificate can therefore bypass the LAN restriction and gain full Erlang distribution access to the node, including rpc:call/4 and code:load_binary/3.
This vulnerability is associated with program file lib/ssl/src/inet_tls_dist.erl.
This issue affects OTP from OTP 26.0 before OTP 27.3.4.13, OTP 28.5.0.2, and OTP 29.0.2, corresponding to ssl from 11.0 before 11.2.12.9, 11.6.0.2, and 11.7.2.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 16:23 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/erlang/otp/security/advisories… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-48860.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-48860 | related |
| https://www.erlang.org/doc/system/versions.html#o… | x_version-scheme |
| https://github.com/erlang/otp/commit/7a08c5507862… | related |
| https://github.com/erlang/otp/commit/0209a6df65d6… | patch |
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Erlang | OTP |
Affected:
26.0 , < *
(otp)
cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
||
| Erlang | OTP |
Affected:
11.0 , < *
(otp)
cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
||
| Erlang | OTP |
Affected:
7a08c5507862a7011568506d0c17b1fdef30bee4 , < 0209a6df65d605552b378273027b3968b35f26b4
(git)
cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
Date Public
2026-06-10 14:35
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-48860",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T16:23:08.922807Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-10T16:23:31.951Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"inet_tls_dist"
],
"packageName": "otp",
"packageURL": "pkg:software-id/erlang.org/otp",
"product": "OTP",
"programFiles": [
"lib/ssl/src/inet_tls_dist.erl"
],
"programRoutines": [
{
"name": "inet_tls_dist:check_ip/1"
}
],
"vendor": "Erlang",
"versions": [
{
"changes": [
{
"at": "27.3.4.13",
"status": "unaffected"
},
{
"at": "28.5.0.2",
"status": "unaffected"
},
{
"at": "29.0.2",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "26.0",
"versionType": "otp"
}
]
},
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"inet_tls_dist"
],
"packageName": "ssl",
"packageURL": "pkg:otp/ssl?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp\u0026vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Ferlang%2Fotp.git",
"product": "OTP",
"programFiles": [
"src/inet_tls_dist.erl"
],
"programRoutines": [
{
"name": "inet_tls_dist:check_ip/1"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
{
"changes": [
{
"at": "11.2.12.9",
"status": "unaffected"
},
{
"at": "11.6.0.2",
"status": "unaffected"
},
{
"at": "11.7.2",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "11.0",
"versionType": "otp"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"inet_tls_dist"
],
"packageName": "erlang/otp",
"packageURL": "pkg:github/erlang/otp",
"product": "OTP",
"programFiles": [
"lib/ssl/src/inet_tls_dist.erl"
],
"programRoutines": [
{
"name": "inet_tls_dist:check_ip/1"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
{
"lessThan": "0209a6df65d605552b378273027b3968b35f26b4",
"status": "affected",
"version": "7a08c5507862a7011568506d0c17b1fdef30bee4",
"versionType": "git"
}
]
}
],
"configurations": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eThe Erlang distribution must be configured to use TLS (\u003ccode\u003einet_tls_dist\u003c/code\u003e) with the \u003ccode\u003echeck_ip\u003c/code\u003e option enabled. The default Erlang distribution configuration does not use TLS and is not affected.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "The Erlang distribution must be configured to use TLS (`inet_tls_dist`) with the `check_ip` option enabled. The default Erlang distribution configuration does not use TLS and is not affected."
}
],
"value": "The Erlang distribution must be configured to use TLS (inet_tls_dist) with the check_ip option enabled. The default Erlang distribution configuration does not use TLS and is not affected."
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"versionEndExcluding": "27.3.4.13",
"versionStartIncluding": "26.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"versionEndExcluding": "28.5.0.2",
"versionStartIncluding": "28.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"versionEndExcluding": "29.0.2",
"versionStartIncluding": "29.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Lukas Backstr\u00f6m"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Ingela Anderton Andin"
},
{
"lang": "en",
"type": "remediation reviewer",
"value": "Raimo Niskanen"
},
{
"lang": "en",
"type": "remediation reviewer",
"value": "Jakub Witczak"
}
],
"datePublic": "2026-06-10T14:35:49.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eReliance on IP Address for Authentication vulnerability in Erlang/OTP ssl (inet_tls_dist module) allows unauthenticated bypass of the distribution-over-TLS LAN allowlist.\u003c/p\u003e\n\u003cp\u003eThe \u003ccode\u003einet_tls_dist:check_ip/1\u003c/code\u003e function, which enforces a LAN allowlist for Erlang distribution over TLS, calls \u003ccode\u003einet:sockname/1\u003c/code\u003e instead of \u003ccode\u003einet:peername/1\u003c/code\u003e to obtain the peer\u0027s IP address. Because \u003ccode\u003einet:sockname/1\u003c/code\u003e returns the local socket address, both the local IP and the supposed peer IP resolve to the same value, causing the subnet mask comparison to always succeed regardless of the actual remote address. Any holder of a CA-signed TLS certificate can therefore bypass the LAN restriction and gain full Erlang distribution access to the node, including \u003ccode\u003erpc:call/4\u003c/code\u003e and \u003ccode\u003ecode:load_binary/3\u003c/code\u003e.\u003c/p\u003e\n\u003cp\u003eThis vulnerability is associated with program file \u003ccode\u003elib/ssl/src/inet_tls_dist.erl\u003c/code\u003e.\u003c/p\u003e\n\u003cp\u003eThis issue affects OTP from OTP\u0026nbsp;26.0 before OTP\u0026nbsp;27.3.4.13, OTP\u0026nbsp;28.5.0.2, and OTP\u0026nbsp;29.0.2, corresponding to ssl from 11.0 before 11.2.12.9, 11.6.0.2, and 11.7.2.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "Reliance on IP Address for Authentication vulnerability in Erlang/OTP ssl (inet_tls_dist module) allows unauthenticated bypass of the distribution-over-TLS LAN allowlist.\n\nThe `inet_tls_dist:check_ip/1` function, which enforces a LAN allowlist for Erlang distribution over TLS, calls `inet:sockname/1` instead of `inet:peername/1` to obtain the peer\u0027s IP address. Because `inet:sockname/1` returns the local socket address, both the local IP and the supposed peer IP resolve to the same value, causing the subnet mask comparison to always succeed regardless of the actual remote address. Any holder of a CA-signed TLS certificate can therefore bypass the LAN restriction and gain full Erlang distribution access to the node, including `rpc:call/4` and `code:load_binary/3`.\n\nThis vulnerability is associated with program file `lib/ssl/src/inet_tls_dist.erl`.\n\nThis issue affects OTP from OTP\u00a026.0 before OTP\u00a027.3.4.13, OTP\u00a028.5.0.2, and OTP\u00a029.0.2, corresponding to ssl from 11.0 before 11.2.12.9, 11.6.0.2, and 11.7.2."
}
],
"value": "Reliance on IP Address for Authentication vulnerability in Erlang/OTP ssl (inet_tls_dist module) allows unauthenticated bypass of the distribution-over-TLS LAN allowlist.\n\nThe inet_tls_dist:check_ip/1 function, which enforces a LAN allowlist for Erlang distribution over TLS, calls inet:sockname/1 instead of inet:peername/1 to obtain the peer\u0027s IP address. Because inet:sockname/1 returns the local socket address, both the local IP and the supposed peer IP resolve to the same value, causing the subnet mask comparison to always succeed regardless of the actual remote address. Any holder of a CA-signed TLS certificate can therefore bypass the LAN restriction and gain full Erlang distribution access to the node, including rpc:call/4 and code:load_binary/3.\n\nThis vulnerability is associated with program file lib/ssl/src/inet_tls_dist.erl.\n\nThis issue affects OTP from OTP\u00a026.0 before OTP\u00a027.3.4.13, OTP\u00a028.5.0.2, and OTP\u00a029.0.2, corresponding to ssl from 11.0 before 11.2.12.9, 11.6.0.2, and 11.7.2."
}
],
"impacts": [
{
"capecId": "CAPEC-1",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"
}
]
},
{
"capecId": "CAPEC-115",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-115 Authentication Bypass"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "HIGH",
"attackRequirements": "PRESENT",
"attackVector": "ADJACENT",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-1025",
"description": "CWE-1025 Comparison Using Wrong Factors",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-863",
"description": "CWE-863 Incorrect Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-24T20:39:54.903Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/erlang/otp/security/advisories/GHSA-gp7x-mfv6-52cv"
},
{
"name": "EEF CNA record for CVE-2026-48860",
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-48860.html"
},
{
"name": "OSV record EEF-CVE-2026-48860",
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-48860"
},
{
"name": "Erlang/OTP version ordering",
"tags": [
"x_version-scheme"
],
"url": "https://www.erlang.org/doc/system/versions.html#order-of-versions"
},
{
"name": "Introducing commit 7a08c55 in erlang/otp",
"tags": [
"related"
],
"url": "https://github.com/erlang/otp/commit/7a08c5507862a7011568506d0c17b1fdef30bee4"
},
{
"name": "Fix commit 0209a6d in erlang/otp",
"tags": [
"patch"
],
"url": "https://github.com/erlang/otp/commit/0209a6df65d605552b378273027b3968b35f26b4"
}
],
"source": {
"discovery": "INTERNAL"
},
"title": "Distribution-over-TLS LAN allowlist silently bypassed due to sockname/peername confusion in inet_tls_dist",
"workarounds": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eImplement a custom \u003ccode\u003everify_fun\u003c/code\u003e SSL option that correctly checks the peer IP address using \u003ccode\u003einet:peername/1\u003c/code\u003e on the socket.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "Implement a custom `verify_fun` SSL option that correctly checks the peer IP address using `inet:peername/1` on the socket."
}
],
"value": "Implement a custom verify_fun SSL option that correctly checks the peer IP address using inet:peername/1 on the socket."
}
]
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-48860",
"datePublished": "2026-06-10T14:35:49.987Z",
"dateReserved": "2026-05-25T20:44:10.697Z",
"dateUpdated": "2026-09-24T20:39:54.903Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-48860",
"date": "2026-09-29",
"epss": "0.00379",
"percentile": "0.29342"
},
"microsoft_vex": {
"current_release_date": "2026-06-18T14:42:46.000Z",
"cve": "CVE-2026-48860",
"id": "msrc_CVE-2026-48860",
"initial_release_date": "2026-06-02T00:00:00.000Z",
"product_status:fixed": "1",
"product_status:known_affected": "1",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "Distribution-over-TLS LAN allowlist silently bypassed due to sockname/peername confusion in inet_tls_dist",
"url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-48860.json",
"version": "2"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"inet_tls_dist"
],
"packageName": "otp",
"packageURL": "pkg:software-id/erlang.org/otp",
"product": "OTP",
"programFiles": [
"lib/ssl/src/inet_tls_dist.erl"
],
"programRoutines": [
{
"name": "inet_tls_dist:check_ip/1"
}
],
"vendor": "Erlang",
"versions": [
{
"changes": [
{
"at": "27.3.4.13",
"status": "unaffected"
},
{
"at": "28.5.0.2",
"status": "unaffected"
},
{
"at": "29.0.2",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "26.0",
"versionType": "otp"
}
]
},
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"inet_tls_dist"
],
"packageName": "ssl",
"packageURL": "pkg:otp/ssl?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp\u0026vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Ferlang%2Fotp.git",
"product": "OTP",
"programFiles": [
"src/inet_tls_dist.erl"
],
"programRoutines": [
{
"name": "inet_tls_dist:check_ip/1"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
{
"changes": [
{
"at": "11.2.12.9",
"status": "unaffected"
},
{
"at": "11.6.0.2",
"status": "unaffected"
},
{
"at": "11.7.2",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "11.0",
"versionType": "otp"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"inet_tls_dist"
],
"packageName": "erlang/otp",
"packageURL": "pkg:github/erlang/otp",
"product": "OTP",
"programFiles": [
"lib/ssl/src/inet_tls_dist.erl"
],
"programRoutines": [
{
"name": "inet_tls_dist:check_ip/1"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
{
"lessThan": "0209a6df65d605552b378273027b3968b35f26b4",
"status": "affected",
"version": "7a08c5507862a7011568506d0c17b1fdef30bee4",
"versionType": "git"
}
]
}
],
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"matchCriteriaId": "9F891113-4D35-4AB8-AA44-F3B6FC784F48",
"versionEndExcluding": "27.3.4.13",
"versionStartIncluding": "26.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"matchCriteriaId": "902ED4C3-B9DE-4ABC-9BEA-D23DA4F5D373",
"versionEndExcluding": "28.5.0.2",
"versionStartIncluding": "28.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F4AB1573-4E81-4338-B65A-B3C94C7249FA",
"versionEndExcluding": "29.0.2",
"versionStartIncluding": "29.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/ssl:*:*:*:*:*:*:*:*",
"matchCriteriaId": "0CA14B60-463E-40CC-912B-C7F2CA378F10",
"versionEndExcluding": "11.2.12.9",
"versionStartIncluding": "11.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/ssl:*:*:*:*:*:*:*:*",
"matchCriteriaId": "3B27962B-3148-468A-973A-9C1564E41697",
"versionEndExcluding": "11.6.0.2",
"versionStartIncluding": "11.6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/ssl:*:*:*:*:*:*:*:*",
"matchCriteriaId": "39203B38-8145-4DC7-9624-2EB224B7E6AA",
"versionEndExcluding": "11.7.2",
"versionStartIncluding": "11.7",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Reliance on IP Address for Authentication vulnerability in Erlang/OTP ssl (inet_tls_dist module) allows unauthenticated bypass of the distribution-over-TLS LAN allowlist.\n\nThe inet_tls_dist:check_ip/1 function, which enforces a LAN allowlist for Erlang distribution over TLS, calls inet:sockname/1 instead of inet:peername/1 to obtain the peer\u0027s IP address. Because inet:sockname/1 returns the local socket address, both the local IP and the supposed peer IP resolve to the same value, causing the subnet mask comparison to always succeed regardless of the actual remote address. Any holder of a CA-signed TLS certificate can therefore bypass the LAN restriction and gain full Erlang distribution access to the node, including rpc:call/4 and code:load_binary/3.\n\nThis vulnerability is associated with program file lib/ssl/src/inet_tls_dist.erl.\n\nThis issue affects OTP from OTP\u00a026.0 before OTP\u00a027.3.4.13, OTP\u00a028.5.0.2, and OTP\u00a029.0.2, corresponding to ssl from 11.0 before 11.2.12.9, 11.6.0.2, and 11.7.2."
}
],
"id": "CVE-2026-48860",
"lastModified": "2026-09-24T21:17:14.607",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "HIGH",
"attackRequirements": "PRESENT",
"attackVector": "ADJACENT",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-48860",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T16:23:08.922807Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-10T16:17:12.503",
"references": [
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
"Third Party Advisory"
],
"url": "https://cna.erlef.org/cves/CVE-2026-48860.html"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
"Patch"
],
"url": "https://github.com/erlang/otp/commit/0209a6df65d605552b378273027b3968b35f26b4"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"url": "https://github.com/erlang/otp/commit/7a08c5507862a7011568506d0c17b1fdef30bee4"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
"Vendor Advisory"
],
"url": "https://github.com/erlang/otp/security/advisories/GHSA-gp7x-mfv6-52cv"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
"Third Party Advisory"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-48860"
},
{
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"tags": [
"Product"
],
"url": "https://www.erlang.org/doc/system/versions.html#order-of-versions"
}
],
"sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-863"
},
{
"lang": "en",
"value": "CWE-1025"
}
],
"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-09-21T11:32:10+00:00",
"cve": "CVE-2026-48860",
"id": "CVE-2026-48860",
"initial_release_date": "2026-06-10T14:35:49.987000+00:00",
"product_status:fixed": "79",
"product_status:known_affected": "42",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "erlang: Erlang/OTP: Authentication bypass allows arbitrary code execution via improper IP address validation",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48860.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-48860",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-10T16:23:08.922807Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-10T16:23:27.427Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"inet_tls_dist"
],
"packageName": "otp",
"packageURL": "pkg:software-id/erlang.org/otp",
"product": "OTP",
"programFiles": [
"lib/ssl/src/inet_tls_dist.erl"
],
"programRoutines": [
{
"name": "inet_tls_dist:check_ip/1"
}
],
"vendor": "Erlang",
"versions": [
{
"changes": [
{
"at": "27.3.4.13",
"status": "unaffected"
},
{
"at": "28.5.0.2",
"status": "unaffected"
},
{
"at": "29.0.2",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "26.0",
"versionType": "otp"
}
]
},
{
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"inet_tls_dist"
],
"packageName": "ssl",
"packageURL": "pkg:otp/ssl?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp\u0026vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Ferlang%2Fotp.git",
"product": "OTP",
"programFiles": [
"src/inet_tls_dist.erl"
],
"programRoutines": [
{
"name": "inet_tls_dist:check_ip/1"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
{
"changes": [
{
"at": "11.2.12.9",
"status": "unaffected"
},
{
"at": "11.6.0.2",
"status": "unaffected"
},
{
"at": "11.7.2",
"status": "unaffected"
}
],
"lessThan": "*",
"status": "affected",
"version": "11.0",
"versionType": "otp"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"inet_tls_dist"
],
"packageName": "erlang/otp",
"packageURL": "pkg:github/erlang/otp",
"product": "OTP",
"programFiles": [
"lib/ssl/src/inet_tls_dist.erl"
],
"programRoutines": [
{
"name": "inet_tls_dist:check_ip/1"
}
],
"repo": "https://github.com/erlang/otp",
"vendor": "Erlang",
"versions": [
{
"lessThan": "0209a6df65d605552b378273027b3968b35f26b4",
"status": "affected",
"version": "7a08c5507862a7011568506d0c17b1fdef30bee4",
"versionType": "git"
}
]
}
],
"configurations": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eThe Erlang distribution must be configured to use TLS (\u003ccode\u003einet_tls_dist\u003c/code\u003e) with the \u003ccode\u003echeck_ip\u003c/code\u003e option enabled. The default Erlang distribution configuration does not use TLS and is not affected.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "The Erlang distribution must be configured to use TLS (`inet_tls_dist`) with the `check_ip` option enabled. The default Erlang distribution configuration does not use TLS and is not affected."
}
],
"value": "The Erlang distribution must be configured to use TLS (inet_tls_dist) with the check_ip option enabled. The default Erlang distribution configuration does not use TLS and is not affected."
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"versionEndExcluding": "27.3.4.13",
"versionStartIncluding": "26.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"versionEndExcluding": "28.5.0.2",
"versionStartIncluding": "28.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
"versionEndExcluding": "29.0.2",
"versionStartIncluding": "29.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Lukas Backstr\u00f6m"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Ingela Anderton Andin"
},
{
"lang": "en",
"type": "remediation reviewer",
"value": "Raimo Niskanen"
},
{
"lang": "en",
"type": "remediation reviewer",
"value": "Jakub Witczak"
}
],
"datePublic": "2026-06-10T14:35:49.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eReliance on IP Address for Authentication vulnerability in Erlang/OTP ssl (inet_tls_dist module) allows unauthenticated bypass of the distribution-over-TLS LAN allowlist.\u003c/p\u003e\n\u003cp\u003eThe \u003ccode\u003einet_tls_dist:check_ip/1\u003c/code\u003e function, which enforces a LAN allowlist for Erlang distribution over TLS, calls \u003ccode\u003einet:sockname/1\u003c/code\u003e instead of \u003ccode\u003einet:peername/1\u003c/code\u003e to obtain the peer\u0027s IP address. Because \u003ccode\u003einet:sockname/1\u003c/code\u003e returns the local socket address, both the local IP and the supposed peer IP resolve to the same value, causing the subnet mask comparison to always succeed regardless of the actual remote address. Any holder of a CA-signed TLS certificate can therefore bypass the LAN restriction and gain full Erlang distribution access to the node, including \u003ccode\u003erpc:call/4\u003c/code\u003e and \u003ccode\u003ecode:load_binary/3\u003c/code\u003e.\u003c/p\u003e\n\u003cp\u003eThis vulnerability is associated with program file \u003ccode\u003elib/ssl/src/inet_tls_dist.erl\u003c/code\u003e.\u003c/p\u003e\n\u003cp\u003eThis issue affects OTP from OTP\u0026nbsp;26.0 before OTP\u0026nbsp;27.3.4.13, OTP\u0026nbsp;28.5.0.2, and OTP\u0026nbsp;29.0.2, corresponding to ssl from 11.0 before 11.2.12.9, 11.6.0.2, and 11.7.2.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "Reliance on IP Address for Authentication vulnerability in Erlang/OTP ssl (inet_tls_dist module) allows unauthenticated bypass of the distribution-over-TLS LAN allowlist.\n\nThe `inet_tls_dist:check_ip/1` function, which enforces a LAN allowlist for Erlang distribution over TLS, calls `inet:sockname/1` instead of `inet:peername/1` to obtain the peer\u0027s IP address. Because `inet:sockname/1` returns the local socket address, both the local IP and the supposed peer IP resolve to the same value, causing the subnet mask comparison to always succeed regardless of the actual remote address. Any holder of a CA-signed TLS certificate can therefore bypass the LAN restriction and gain full Erlang distribution access to the node, including `rpc:call/4` and `code:load_binary/3`.\n\nThis vulnerability is associated with program file `lib/ssl/src/inet_tls_dist.erl`.\n\nThis issue affects OTP from OTP\u00a026.0 before OTP\u00a027.3.4.13, OTP\u00a028.5.0.2, and OTP\u00a029.0.2, corresponding to ssl from 11.0 before 11.2.12.9, 11.6.0.2, and 11.7.2."
}
],
"value": "Reliance on IP Address for Authentication vulnerability in Erlang/OTP ssl (inet_tls_dist module) allows unauthenticated bypass of the distribution-over-TLS LAN allowlist.\n\nThe inet_tls_dist:check_ip/1 function, which enforces a LAN allowlist for Erlang distribution over TLS, calls inet:sockname/1 instead of inet:peername/1 to obtain the peer\u0027s IP address. Because inet:sockname/1 returns the local socket address, both the local IP and the supposed peer IP resolve to the same value, causing the subnet mask comparison to always succeed regardless of the actual remote address. Any holder of a CA-signed TLS certificate can therefore bypass the LAN restriction and gain full Erlang distribution access to the node, including rpc:call/4 and code:load_binary/3.\n\nThis vulnerability is associated with program file lib/ssl/src/inet_tls_dist.erl.\n\nThis issue affects OTP from OTP\u00a026.0 before OTP\u00a027.3.4.13, OTP\u00a028.5.0.2, and OTP\u00a029.0.2, corresponding to ssl from 11.0 before 11.2.12.9, 11.6.0.2, and 11.7.2."
}
],
"impacts": [
{
"capecId": "CAPEC-1",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"
}
]
},
{
"capecId": "CAPEC-115",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-115 Authentication Bypass"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "HIGH",
"attackRequirements": "PRESENT",
"attackVector": "ADJACENT",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-1025",
"description": "CWE-1025 Comparison Using Wrong Factors",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-863",
"description": "CWE-863 Incorrect Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-24T20:39:54.903Z",
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/erlang/otp/security/advisories/GHSA-gp7x-mfv6-52cv"
},
{
"name": "EEF CNA record for CVE-2026-48860",
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-48860.html"
},
{
"name": "OSV record EEF-CVE-2026-48860",
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-48860"
},
{
"name": "Erlang/OTP version ordering",
"tags": [
"x_version-scheme"
],
"url": "https://www.erlang.org/doc/system/versions.html#order-of-versions"
},
{
"name": "Introducing commit 7a08c55 in erlang/otp",
"tags": [
"related"
],
"url": "https://github.com/erlang/otp/commit/7a08c5507862a7011568506d0c17b1fdef30bee4"
},
{
"name": "Fix commit 0209a6d in erlang/otp",
"tags": [
"patch"
],
"url": "https://github.com/erlang/otp/commit/0209a6df65d605552b378273027b3968b35f26b4"
}
],
"source": {
"discovery": "INTERNAL"
},
"title": "Distribution-over-TLS LAN allowlist silently bypassed due to sockname/peername confusion in inet_tls_dist",
"workarounds": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eImplement a custom \u003ccode\u003everify_fun\u003c/code\u003e SSL option that correctly checks the peer IP address using \u003ccode\u003einet:peername/1\u003c/code\u003e on the socket.\u003c/p\u003e"
},
{
"base64": false,
"type": "text/markdown",
"value": "Implement a custom `verify_fun` SSL option that correctly checks the peer IP address using `inet:peername/1` on the socket."
}
],
"value": "Implement a custom verify_fun SSL option that correctly checks the peer IP address using inet:peername/1 on the socket."
}
]
}
},
"cveMetadata": {
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"assignerShortName": "EEF",
"cveId": "CVE-2026-48860",
"datePublished": "2026-06-10T14:35:49.987Z",
"dateReserved": "2026-05-25T20:44:10.697Z",
"dateUpdated": "2026-09-24T20:39:54.903Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…