AZL-87384 CVE-2026-39821 affecting package azcopy for versions less than 10.25.1-6

The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode"xn--example-.com" incorrectly returns the name "example.com" rather than an error. This behavior can lead to privilege escalation in programs using the idna...

AZL-88161 CVE-2026-39821 affecting package opa for versions less than 0.63.0-4

The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode"xn--example-.com" incorrectly returns the name "example.com" rather than an error. This behavior can lead to privilege escalation in programs using the idna...

CVE-2026-39821

The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode"xn--example-.com" incorrectly returns the name "example.com" rather than an error. This behavior can lead to privilege escalation in programs using the idna...

AZL-87272 CVE-2026-39821 affecting package podman 5.6.1-10

The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode"xn--example-.com" incorrectly returns the name "example.com" rather than an error. This behavior can lead to privilege escalation in programs using the idna...

CVE-2026-39821

The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode"xn--example-.com" incorrectly returns the name "example.com" rather than an error. This behavior can lead to privilege escalation in programs using the idna...

CVE-2026-39821 Invoking failure to reject ASCII-only Punycode-encoded labels in golang.org/x/net/idna

The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode"xn--example-.com" incorrectly returns the name "example.com" rather than an error. This behavior can lead to privilege escalation in programs using the idna...

CVE-2026-39821

CVE-2026-39821 affects golang.org/x/net/idna; ToASCII/ToUnicode incorrectly accept Punycode-encoded labels that decode to ASCII-only labels (e.g., xn--example-.com). The issue can enable privilege escalation in programs that validate ASCII hostnames but later convert to Unicode, potentially grant...

CVE-2026-39821

The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode"xn--example-.com" incorrectly returns the name "example.com" rather than an error. This behavior can lead to privilege escalation in programs using the idna...

GO-2026-5026 Invoking failure to reject ASCII-only Punycode-encoded labels in golang.org/x/net/idna

The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. For example, ToUnicode"xn--example-.com" incorrectly returns the name "example.com" rather than an error. This behavior can lead to privilege escalation in programs using the idna...

Critical Photon OS Security Update - PHSA-2026-5.0-90-0855

Updates of 'rubygem-addressable', 'libvirt', 'libxml2', 'containerd', 'glib', 'glibc', 'docker', 'go', 'python3-idna', 'gtk3' packages of Photon OS have been released...

Astra Linux – Vulnerability in Python 3.7, Python 2.7

A issue was discovered in Python before version 3.11.1. An unnecessary quadratic algorithm exists in one path when processing certain inputs to the IDNA RFC 3490 decoder. This could lead to a CPU denial of service if a maliciously crafted, unreasonably long hostname was provided to the decoder...

OPENSUSE-SU-2026:10829-1 python311-idna-3.15-1.1 on GA media

These are all security issues fixed in the python311-idna-3.15-1.1 package on the GA media of openSUSE Tumbleweed...

GHSA-65PC-FJ4G-8RJX Internationalized Domain Names in Applications (IDNA): Specially crafted inputs to idna.encode() can bypass CVE-2024-3651 fix

This is the same issue as CVE-2024-3651, however the original remediation in 2024 was not a complete fix. Payloads such as "\u0660" N or "\u30fb" N + "\u6f22" utilize the validcontexto function prior to length rejection, and for high values of N will take a long time to process. Impact A speciall...

PT-2026-41956

Name of the Vulnerable Software and Affected Versions idna versions prior to 3.14 Description A specially crafted argument passed to the idna.encode function can consume significant system resources, potentially leading to a denial-of-service. This occurs because payloads containing specific...

CLSA-2026-1777946894 Fix CVE(s): CVE-2022-0391, CVE-2022-45061, CVE-2024-7592, CVE-2026-4519

SECURITY UPDATE: URL parsing accepts ASCII tab/CR/LF URL smuggling - debian/patches/CVE-2022-0391.patch: sanitise tab, CR, LF anywhere in URL/scheme inside urlsplit before cache lookup, plus regression test in Lib/urlparse.py, Lib/test/testurlparse.py. - CVE-2022-0391 SECURITY UPDATE: Quadratic...

Splunk Enterprise 9.1.x < 9.1.8 / 9.2.x < 9.2.5 / 9.3.x < 9.3.3 / 9.4.x < 9.4.1 Multiple Vulnerabilities (SVD-2025-0308)

The version of Splunk installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities: - A vulnerability in the kjd/idna library, specifically within the idna.encode function, allows crafted input strings to cause quadratic complexity, leading to a...

SUSE-SU-2026:20910-1 Security update for librsvg

This update for librsvg fixes the following issues: Update to version 2.60.2: - CVE-2024-12224: Fixed idna accepts Punycode labels that do not produce any non-ASCII when decoded bsc1243867. - CVE-2024-43806: Fixed memory explosion in rustix bsc1229950...

NewStart CGSL MAIN 6.06 (SP) : python3 Multiple Vulnerabilities (NS-SA-2026-0032)

The remote NewStart CGSL host, running version MAIN 6.06 SP, has python3 packages installed that are affected by multiple vulnerabilities: - Python 3.x through 3.10 has an open redirection vulnerability in lib/http/server.py due to no protection against multiple / at the beginning of URI path whi...

NewStart CGSL MAIN 6.06 (SP) : glibc Multiple Vulnerabilities (NS-SA-2026-0027)

The remote NewStart CGSL host, running version MAIN 6.06 SP, has glibc packages installed that are affected by multiple vulnerabilities: - The mqnotify function in the GNU C Library aka glibc versions 2.32 and 2.33 has a use-after-free. It may use the notification thread attributes object passed...

SUSE SLES15 Security Update : snpguest (SUSE-SU-2026:0620-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0620-1 advisory. Update to version 0.10.0. Security issues fixed: - CVE-2026-25727: time: parsing of user-provided input by the RFC 2822 date parser...