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CVE-2026-54909— Pion STUN vulnerable to remote denial of service via panic while parsing a malformed XOR-MAPPED-ADDRESS attribute

CVSS 5.3 · Medium EPSS 0.37% · P30

Possible ATT&CK Techniques 1AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProductVersion RangeStatus
pionstun< 3.1.3affected
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I. Basic Information for CVE-2026-54909

Vulnerability Information
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Vulnerability Title
Pion STUN vulnerable to remote denial of service via panic while parsing a malformed XOR-MAPPED-ADDRESS attribute
Source: CVE Program / CVE List V5
Vulnerability Description
pion/stun is a Go implementation of STUN. Prior to 3.1.3, XORMappedAddress.GetFromAs can panic while parsing a malformed short XOR-MAPPED-ADDRESS attribute in STUN or ICE Binding-response parsing paths, allowing remote denial of service. This issue is fixed in version 3.1.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Pion STUN 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Pion Pion STUN是Pion组织的一个STUN协议库。 Pion STUN 3.1.3之前版本存在输入验证错误漏洞，该漏洞源于XORMappedAddress.GetFromAs在解析格式错误的短XOR-MAPPED-ADDRESS属性时可能崩溃，可能导致远程拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
pionstun < 3.1.3 -

II. Public POCs for CVE-2026-54909

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III. Intelligence Information for CVE-2026-54909

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Patches & Fixes for CVE-2026-54909 (2)

Vendor Advisories for CVE-2026-54909 (1)

Vendor Pages for CVE-2026-54909 (1)

IV. Related Vulnerabilities

Same vendor: pion
Same weakness: CWE-20

V. Comments for CVE-2026-54909

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