Linux Distros Unpatched Vulnerability : CVE-2026-115347

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Mistune before 3.3.0 contains an inefficient algorithmic complexity vulnerability in parselinktext that allows remote attackers to cause denial of service throu...

DEBIAN-CVE-2026-115347

Mistune before 3.3.0 contains an inefficient algorithmic complexity vulnerability in parselinktext that allows remote attackers to cause denial of service through unbalanced square brackets. Attackers can submit markdown containing long runs of unmatched brackets to mistune.html, triggering...

CVE-2026-115347

Mistune before 3.3.0 contains an inefficient algorithmic complexity vulnerability in parselinktext that allows remote attackers to cause denial of service through unbalanced square brackets. Attackers can submit markdown containing long runs of unmatched brackets to mistune.html, triggering...

CVE-2026-115349 Mistune 3.0.0 before 3.3.0 Denial of Service via Nested Bracket Parsing

Mistune from 3.0.0 before 3.3.0 contains an algorithmic complexity denial of service vulnerability in the parselinktext function in src/mistune/helpers.py. Attackers can submit markdown with deeply nested square brackets triggering quadratic parsing time, exhausting server CPU with small crafted...

CVE-2026-115349 Mistune 3.0.0 before 3.3.0 Denial of Service via Nested Bracket Parsing

Mistune from 3.0.0 before 3.3.0 contains an algorithmic complexity denial of service vulnerability in the parselinktext function in src/mistune/helpers.py. Attackers can submit markdown with deeply nested square brackets triggering quadratic parsing time, exhausting server CPU with small crafted...

CVE-2026-115349

The Mistune markdown library, versions 3.0.0 through 3.2.x , is vulnerable to an algorithmic complexity denial of service (DoS) in the parse_link_text function located in src/mistune/helpers.py. An attacker can submit a small, specially crafted markdown request containing deeply nested square bra...

CVE-2026-115347 Mistune before 3.3.0 Quadratic Denial of Service via parse_link_text

Mistune before 3.3.0 contains an inefficient algorithmic complexity vulnerability in parselinktext that allows remote attackers to cause denial of service through unbalanced square brackets. Attackers can submit markdown containing long runs of unmatched brackets to mistune.html, triggering...

CVE-2026-115347 Mistune before 3.3.0 Quadratic Denial of Service via parse_link_text

Mistune before 3.3.0 contains an inefficient algorithmic complexity vulnerability in parselinktext that allows remote attackers to cause denial of service through unbalanced square brackets. Attackers can submit markdown containing long runs of unmatched brackets to mistune.html, triggering...

EUVD-2026-108416

Mistune before 3.3.0 contains an inefficient algorithmic complexity vulnerability in parselinktext that allows remote attackers to cause denial of service through unbalanced square brackets. Attackers can submit markdown containing long runs of unmatched brackets to mistune.html, triggering...

CVE-2026-115347

The Mistune markdown processor, in versions prior to 3.3.0 , is susceptible to an inefficient algorithmic complexity vulnerability within the parse_link_text function. Remote attackers can trigger a denial of service (DoS) by submitting markdown containing long runs of unmatched square brackets t...

Rocky Linux 9 [CIQ] Security Update: python3.12 / python3.12-debug / python3.12-debuginfo / etc (crlsa-2025_7107)

The Rocky Linux 9 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-20257107 advisory. python: cpython: URL parser allowed square brackets in domain names CVE-2025-0938 Tenable has extracted the preceding description block directly from the CIQ securi...

Rocky Linux 9 [CIQ] Security Update: python3.11 / python3.11-debug / python3.11-debuginfo / etc (crlsa-2025_7109)

The Rocky Linux 9 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-20257109 advisory. python: cpython: URL parser allowed square brackets in domain names CVE-2025-0938 Tenable has extracted the preceding description block directly from the CIQ securi...

Rocky Linux 9 [CIQ] Security Update: python-unversioned-command / python3 / python3-debug / etc (crlsa-2025_6977)

The Rocky Linux 9 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-20256977 advisory. python: cpython: URL parser allowed square brackets in domain names CVE-2025-0938 Tenable has extracted the preceding description block directly from the CIQ securi...

CVE-2026-41661 Admidio: Reflected XSS in msg_window.php via Square Bracket to HTML Tag Conversion

Admidio is an open-source user management solution. Prior to version 5.0.9, an unauthenticated attacker can execute arbitrary JavaScript in any Admidio user's browser through a reflected XSS in system/msgwindow.php. The endpoint passes user input through htmlspecialchars, which does not encode...

CVE-2026-41661 Admidio: Reflected XSS in msg_window.php via Square Bracket to HTML Tag Conversion

Admidio is an open-source user management solution. Prior to version 5.0.9, an unauthenticated attacker can execute arbitrary JavaScript in any Admidio user's browser through a reflected XSS in system/msgwindow.php. The endpoint passes user input through htmlspecialchars, which does not encode...

GHSA-GQ27-FC8W-VCMP Admidio vulnerable to reflected XSS in msg_window.php via Square Bracket to HTML Tag Conversion

Summary An unauthenticated attacker can execute arbitrary JavaScript in any Admidio user's browser through a reflected XSS in system/msgwindow.php. The endpoint passes user input through htmlspecialchars, which does not encode square brackets. A subsequent call to Language::prepareTextPlaceholder...

Admidio vulnerable to reflected XSS in msg_window.php via Square Bracket to HTML Tag Conversion

Summary An unauthenticated attacker can execute arbitrary JavaScript in any Admidio user's browser through a reflected XSS in system/msgwindow.php. The endpoint passes user input through htmlspecialchars, which does not encode square brackets. A subsequent call to Language::prepareTextPlaceholder...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: python3 (UTSA-2026-014321)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-014321 advisory. The Python standard library functions urllib.parse.urlsplit and urlparse accepted domain names that included square brackets which isn't valid according to RFC 3986...

net/url: Insufficient validation of bracketed IPv6 hostnames in net/url

The Parse function permits values other than IPv6 addresses to be included in square brackets within the host component of a URL. RFC 3986 permits IPv6 addresses to be included within the host component, enclosed within square brackets. For example: "http://::1/". IPv4 addresses and hostnames mus...

CVE-2026-3475

The Instant Popup Builder plugin for WordPress is vulnerable to Unauthenticated Arbitrary Shortcode Execution in all versions up to and including 1.1.7. This is due to the handleemailverificationpage function constructing a shortcode string from user-supplied GET parameters token, email and passi...