34 matches found
DEBIAN-CVE-2026-86431
league/commonmark thephpleague/commonmark versions = 2.7.0 and 2.9.1 contain a cross-site scripting vulnerability in the AttributesExtension. Prefixing an attribute name with a single U+000C form feed byte e.g. \x0Conclick="alert1" bypasses the AttributesHelper::filterAttributes 'on' event-handle...
CVE-2026-86431 commonmark before 2.9.1 XSS via AttributesExtension form feed bypass
league/commonmark thephpleague/commonmark versions = 2.7.0 and 2.9.1 contain a cross-site scripting vulnerability in the AttributesExtension. Prefixing an attribute name with a single U+000C form feed byte e.g. \x0Conclick="alert1" bypasses the AttributesHelper::filterAttributes 'on' event-handle...
CVE-2026-86431
league/commonmark (thephpleague/commonmark) versions >= 2.7.0 and
EUVD-2026-72389
league/commonmark thephpleague/commonmark versions = 2.7.0 and 2.9.1 contain a cross-site scripting vulnerability in the AttributesExtension. Prefixing an attribute name with a single U+000C form feed byte e.g. \x0Conclick="alert1" bypasses the AttributesHelper::filterAttributes 'on' event-handle...
CVE-2026-86431 commonmark before 2.9.1 XSS via AttributesExtension form feed bypass
league/commonmark thephpleague/commonmark versions = 2.7.0 and 2.9.1 contain a cross-site scripting vulnerability in the AttributesExtension. Prefixing an attribute name with a single U+000C form feed byte e.g. \x0Conclick="alert1" bypasses the AttributesHelper::filterAttributes 'on' event-handle...
CVE-2026-86431 commonmark before 2.9.1 XSS via AttributesExtension form feed bypass
league/commonmark thephpleague/commonmark versions = 2.7.0 and 2.9.1 contain a cross-site scripting vulnerability in the AttributesExtension. Prefixing an attribute name with a single U+000C form feed byte e.g. \x0Conclick="alert1" bypasses the AttributesHelper::filterAttributes 'on' event-handle...
CVE-2026-86431: Improper Neutralization of Input During Web Page Generation
league/commonmark thephpleague/commonmark versions = 2.7.0 and 2.9.1 contain a cross-site scripting vulnerability in the AttributesExtension. Prefixing an attribute name with a single U+000C form feed byte e.g. \x0Conclick="alert1" bypasses the AttributesHelper::filterAttributes 'on' event-handle...
PT-2026-86797
league/commonmark thephpleague/commonmark versions = 2.7.0 and 2.9.1 contain a cross-site scripting vulnerability in the AttributesExtension. Prefixing an attribute name with a single U+000C form feed byte e.g. x0Conclick="alert1" bypasses the AttributesHelper::filterAttributes 'on' event-handler...
Linux Distros Unpatched Vulnerability : CVE-2026-86431
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - league/commonmark thephpleague/commonmark versions = 2.7.0 and 2.9.1 contain a cross-site scripting vulnerability in the AttributesExtension. Prefixing an...
league/commonmark XSS: `on*` event-handler filter in `AttributesExtension` bypassed with a U+000C form feed
Summary The AttributesExtension documents a security guarantee: Note: Attributes starting with on e.g. onclick or onerror are capable of executing JavaScript code and are therefore never allowed by default. You must explicitly add them to the allow list if you want to use them. —...
GHSA-F8FG-PG57-V4J8 league/commonmark XSS: `on*` event-handler filter in `AttributesExtension` bypassed with a U+000C form feed
Summary The AttributesExtension documents a security guarantee: Note: Attributes starting with on e.g. onclick or onerror are capable of executing JavaScript code and are therefore never allowed by default. You must explicitly add them to the allow list if you want to use them. —...
WS-2026-0049
league/commonmark's AttributesExtension left a form feed U+000C inside attribute names because PHP's default trim charlist omits the byte that PCRE's \s matches. Browsers treat U+000C as whitespace between attributes, so a name written as onclick="..." reached the browser as a genuine onclick...
PT-2026-60098
Summary Two filter-bypass techniques in NukeVietCoreRequest::filterAttr and NukeVietCoreRequest::unhtmlentities allow a low-privileged user any account with news post permission to store and serve arbitrary JavaScript to any visitor of the affected page. Affected Component...
JLSEC-2026-562 In GnuPG through 2.4.8, if a signed message has `\f` at the end of a plaintext line, an adversary...
In GnuPG through 2.4.8, if a signed message has \f at the end of a plaintext line, an adversary can construct a modified message that places additional text after the signed material, such that signature verification of the modified message succeeds although an "invalid armor" message is printed...
gnupg: GnuPG: Signature bypass via form feed character in signed messages
A flaw was found in GnuPG. An adversary can exploit this vulnerability by crafting a signed message that includes a form feed character \f at the end of a plaintext line. This allows the adversary to append additional, unsigned text to the message while the signature verification still reports...
CVE-2025-68972
A flaw was found in GnuPG. An adversary can exploit this vulnerability by crafting a signed message that includes a form feed character \f at the end of a plaintext line. This allows the adversary to append additional, unsigned text to the message while the signature verification still reports...
In GnuPG through 2.4.8, if a signed message has \f at the end of a plaintext line, an adversary can construct a modified message that places additional text after the signed material, such that signature verification of the modified message succeeds (although an "invalid armor" message is printed during verification). This is related to use of \f as a marker to denote truncation of a long plaintext line.
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EUVD-2025-205487
In GnuPG through 2.4.8, if a signed message has \f at the end of a plaintext line, an adversary can construct a modified message that places additional text after the signed material, such that signature verification of the modified message succeeds although an "invalid armor" message is printed...
Linux Distros Unpatched Vulnerability : CVE-2025-68972
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In GnuPG through 2.4.8, if a signed message has \f at the end of a plaintext line, an adversary can construct a modified message that places additional text aft...
AZL-73192 CVE-2025-68972 affecting package gnupg2 for versions less than 2.4.9-1
In GnuPG through 2.4.8, if a signed message has \f at the end of a plaintext line, an adversary can construct a modified message that places additional text after the signed material, such that signature verification of the modified message succeeds although an "invalid armor" message is printed...