RHSA-2026:57194

PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree.

ApostropheCMS is an open-source Node.js content management system, and sanitize-html provides a simple HTML sanitizer with a clear API.

js-yaml is a JavaScript YAML parser and dumper.

PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree.

Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation.

The in-memory keyring returned by NewKeyring() silently accepted keys with the ConfirmBeforeUse constraint but never enforced it.

When adding a key to a remote agent constraint extensions such as [email protected] were not serialized in the request.

The Verify() method for FIDO/U2F security key types ([email protected], [email protected]) did not check the User Presence flag.

The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label.

When writing data larger than 4GB in a single Write call on an SSH channel, an integer overflow in the internal payload size calculation caused the write loop to spin indefinitely, sending empty packets without making pr…

A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop.

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.

Pathological inputs could cause DoS through consumePhrase when parsing an email address according to RFC 5322.

The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).

Well-crafted inputs reaching ParseAddress, ParseAddressList, and ParseDate were able to trigger excessive CPU exhaustion and memory allocations.

When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.

When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.

Due to missing nil check, sending 0x0a-0x0f HTTP/2 frames will cause a running server to panic

fast-uri versions 2.3.1 through 3.1.2 and 4.0.0 fail to canonicalize Unicode (IDN) hostnames for HTTP-family URLs.

An incorrectly placed cast from bytes to int allowed for server-side panic in the AES-GCM packet decoder for well-crafted inputs.

The RSA and DSA public key parsers did not enforce size limits on key parameters.

Improper access control in Windows Cross Device Service allows an authorized attacker to elevate privileges locally.

nanoid is a secure, URL-friendly, unique string ID generator for JavaScript.

For certain crafted inputs, a 'ed25519.PrivateKey' was created by casting malformed wire bytes, leading to a panic when used.

When returning errors, functions in the net/textproto package would include its input as part of the error.

ReverseProxy can forward queries containing parameters not visible to Rewrite functions.

(*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name (SAN) entries.

Billy is an interface filesystem abstraction for Go.

An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users.

Parsing arbitrary HTML can consume excessive CPU time, possibly leading to denial of service.

When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a sec…

The HTTP client drops sensitive headers after following a cross-domain redirect.

Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree.

Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree.

If a trusted template author were to write a <script> tag containing an empty 'type' attribute or a 'type' attribute with an ASCII whitespace, the execution of the template would incorrectly escape any data passed into t…

CVE-2026-27142 fixed a vulnerability in which URLs were not correctly escaped inside of a <meta> tag's <content> attribute.

Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree.

Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree.

The "go tool pack" subcommand (usually used only by the compiler as an internal tool with known-good inputs) does not sanitize output filenames.

SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate.

The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp").

Due to the usage of a variable time instruction in the assembly implementation of an internal function, a small number of bits of secret scalars are leaked on the ppc64le architecture.