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idna: idna accepts Punycode labels that do not produce any non-ASCII when decoded

🗓️ 18 Sep 2025 10:30:09Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 4 Views

A flaw in the idna crate allows hostname spoofing and privilege escalation via Punycode labels that render as ASCII or empty.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
ibm
IBM Security Bulletins		Security Bulletin: IBM DataPower Gateway vulnerable to naming confusion (CVE-2024-12224)
2 Apr 202520:10
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM Instana Observability is affected by multiple vulnerabilities within Instana Agent container image
26 May 202606:03
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM Instana Observability is affected by multiple vulnerabilities within Instana Agent container image
4 May 202607:40
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ibm
IBM Security Bulletins		Security Bulletin: IBM Maximo Application Suite - Monitor Component is vulnerable to idna-0.1.5.crate, idna-0.5.0.crate CVE-2024-12224
8 May 202515:19
–ibm
alpinelinux
AlpineLinux		CVE-2024-12224
30 May 202501:16
–alpinelinux
bdu_fstec
BDU FSTEC		The vulnerability of the Punycode character transformation method, which is used to process domain names, allows attackers to increase their privileges.
28 Oct 202500:00
–bdu_fstec
cgr
Chainguard		CVE-2024-12224 vulnerabilities
9 Dec 202412:00
–cgr
circl
Circl		CVE-2024-12224
30 May 202502:41
–circl
cnnvd
CNNVD		Servo 安全漏洞
30 May 202500:00
–cnnvd
cve
CVE		CVE-2024-12224
30 May 202501:16
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.6aarch64thunderbird140.3.0-1.el9_6thunderbird-140.3.0-1.el9_6.aarch64.rpm
Red Hat Enterprise Linux9.6ppc64lethunderbird140.3.0-1.el9_6thunderbird-140.3.0-1.el9_6.ppc64le.rpm
Red Hat Enterprise Linux9.6s390xthunderbird140.3.0-1.el9_6thunderbird-140.3.0-1.el9_6.s390x.rpm
Red Hat Enterprise Linux9.6x86_64thunderbird140.3.0-1.el9_6thunderbird-140.3.0-1.el9_6.x86_64.rpm
Red Hat Enterprise Linux9.6aarch64thunderbird-debuginfo140.3.0-1.el9_6thunderbird-debuginfo-140.3.0-1.el9_6.aarch64.rpm
Red Hat Enterprise Linux9.6ppc64lethunderbird-debuginfo140.3.0-1.el9_6thunderbird-debuginfo-140.3.0-1.el9_6.ppc64le.rpm
Red Hat Enterprise Linux9.6s390xthunderbird-debuginfo140.3.0-1.el9_6thunderbird-debuginfo-140.3.0-1.el9_6.s390x.rpm
Red Hat Enterprise Linux9.6x86_64thunderbird-debuginfo140.3.0-1.el9_6thunderbird-debuginfo-140.3.0-1.el9_6.x86_64.rpm
Red Hat Enterprise Linux9.6aarch64thunderbird-debugsource140.3.0-1.el9_6thunderbird-debugsource-140.3.0-1.el9_6.aarch64.rpm
Red Hat Enterprise Linux9.6ppc64lethunderbird-debugsource140.3.0-1.el9_6thunderbird-debugsource-140.3.0-1.el9_6.ppc64le.rpm
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31 Jul 2026 14:36Current
7.3High risk
Vulners AI Score7.3
CVSS 3.18.8
CVSS 45.1
EPSS0.00201
SSVC
CWE-1289
idna cratehostname spoofingpunycode labelsequality comparison flawhostname validationprivilege escalationunix platform
4