EUVD-2026-39007

Mistune: Potential DoS via quadratic-time parsing in parselinktext...

DEBIAN-CVE-2026-59882

guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Prior to 2.12.3, Uri::assertValidHost does not reject URI host components containing authority delimiters, embedded ports, or malformed IPv6 brackets, allowing Uri::getHost to disagree with the URI authority used for security ...

CVE-2026-59882

guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Prior to 2.12.3, Uri::assertValidHost does not reject URI host components containing authority delimiters, embedded ports, or malformed IPv6 brackets, allowing Uri::getHost to disagree with the URI authority used for security ...

CVE-2026-59882

The CVE affects guzzlehttp/psr7 (PSR-7 HTTP message library for PHP). Prior to version 2.12.3, Uri::assertValidHost() fails to reject authority delimiters, embedded ports, or malformed IPv6 brackets in host components, causing Uri::getHost() to disagree with the URI authority used for security or...

CVE-2026-59711

CVE-2026-59711 affects the showdown library. A cross-site scripting vulnerability exists in metadata title handling when the completeHTMLDocument option is enabled; unescaped characters in markdown frontmatter metadata are placed into HTML title tags, allowing script execution in the rendered pa...

CVE-2026-49851 Mistune: Potential DoS via quadratic-time parsing in parse_link_text

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Mistune is vulnerable to a CPU exhaustion DoS due to superlinear approximately On² behavior in parselinktext. When parsing Markdown containing many consecutive characters, parselinktext repeatedly scans the input usin...

CVE-2026-42260

Open-WebSearch is a multi-engine MCP server, CLI, and local daemon for agent web search and content retrieval. Prior to 2.1.7, isPublicHttpUrl / assertPublicHttpUrl in src/utils/urlSafety.ts do not recognize bracketed IPv6 literals and do not resolve DNS, which combine to allow non-blind SSRF wit...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: golang (UTSA-2026-016817)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-016817 advisory. 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 ...

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...

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...

Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to incorrect parse function values in net/url (CVE-2025-47912)

Summary IBM Watson Speech Services Cartridge is vulnerable to a condition in net/url that allows incorrect parse function values other than IPv6 addresses to be included in square brackets within the host component of a URL CVE-2025-47912, Net/url is used in our speech-utilities. This...

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-2026-39361 OpenObserve has a SSRF Protection Bypass via IPv6 Bracket Notation in validate_enrichment_url

OpenObserve is a cloud-native observability platform. In 0.70.3 and earlier, the validateenrichmenturl function in src/handler/http/request/enrichmenttable/mod.rs fails to block IPv6 addresses because Rust's url crate returns them with surrounding brackets e.g. "::1" not "::1". An authenticated...

CVE-2026-39361

OpenObserve (cloud-native observability platform)

CVE-2026-33672

Picomatch is a glob matcher written JavaScript. Versions prior to 4.0.4, 3.0.2, and 2.3.2 are vulnerable to a method injection vulnerability affecting the POSIXREGEXSOURCE object. Because the object inherits from Object.prototype, specially crafted POSIX bracket expressions e.g., :constructor: ca...

CVE-2026-33672 Picomatch: Method Injection in POSIX Character Classes causes incorrect Glob Matching

Picomatch is a glob matcher written JavaScript. Versions prior to 4.0.4, 3.0.2, and 2.3.2 are vulnerable to a method injection vulnerability affecting the POSIXREGEXSOURCE object. Because the object inherits from Object.prototype, specially crafted POSIX bracket expressions e.g., :constructor: ca...