LibreChat <= 0.7.9 - HTML Injection via Accept-Language Header

danny-avila/librechat 0.7.9 contains a stored XSS caused by improper sanitization of the Accept-Language header, letting logged-in users inject arbitrary HTML into the html lang= tag, exploit requires user to be logged in. id: CVE-2025-8848 info: name: LibreChat marker"...

GHSA-FW57-JGCH-PGF3 Gitea: ParseAcceptLanguage quadratic-time DoS via Locale middleware on unauthenticated requests

Summary The Locale middleware that runs in front of every unauthenticated request calls golang.org/x/text/language.ParseAcceptLanguage on the raw Accept-Language header without imposing a size or shape filter. The underlying parser has quadratic-time behaviour on long lists of malformed language...

PT-2026-63302

Name of the Vulnerable Software and Affected Versions code.gitea.io/gitea versions 1.22.x through 1.26.x Description The Locale middleware, which processes every unauthenticated request, is susceptible to a Denial of Service DoS attack. The issue occurs when the middleware calls...

GO-2026-5981 Ech0: ParseAcceptLanguage `_` separator bypass enables ~70x CPU amplification via Accept-Language header in i18n.Middleware in github.com/lin-snow/ech0

Ech0: ParseAcceptLanguage separator bypass enables 70x CPU amplification via Accept-Language header in i18n.Middleware in github.com/lin-snow/ech0...

GHSA-MQXV-9RM6-W8QC Ech0: ParseAcceptLanguage `_` separator bypass enables ~70x CPU amplification via Accept-Language header in i18n.Middleware

Summary Ech0's i18n middleware runs on every HTTP request and constructs a fresh goi18n.Localizer from the raw Accept-Language header without imposing any size or shape filter. goi18n.NewLocalizer calls golang.org/x/text/language.ParseAcceptLanguage on the value internally. The underlying parser...

CVE-2026-41683

i18next-http-middleware is a middleware to be used with Node.js web frameworks like express or Fastify and also for Deno. Prior to version 3.9.3, i18next-http-middleware wrote user-controlled language values into the Content-Language response header after passing them through utils.escape, which ...

Astra Linux – Vulnerability in golang-golang-x-text

An attacker can cause a denial of service by creating an Accept-Language header that requires ParseAcceptLanguage to take significant time to process...

CVE-2026-44241 Micronaut Framework: Unbounded formattersCache in TimeConverterRegistrar Allows Memory Exhaustion via Accept-Language Header

Micronaut Framework is a JVM-based full stack Java framework designed for building modular, easily testable JVM applications. From 4.3.0 to before 4.10.22, 3.10.6, and 3.8.14, TimeConverterRegistrar caches DateTimeFormatter instances in an unbounded ConcurrentHashMap whose key is derived from the...

CVE-2026-44241 Micronaut Framework: Unbounded formattersCache in TimeConverterRegistrar Allows Memory Exhaustion via Accept-Language Header

Micronaut Framework is a JVM-based full stack Java framework designed for building modular, easily testable JVM applications. From 4.3.0 to before 4.10.22, 3.10.6, and 3.8.14, TimeConverterRegistrar caches DateTimeFormatter instances in an unbounded ConcurrentHashMap whose key is derived from the...

CVE-2026-44241

Summary of CVE-2026-44241 (Micronaut Framework) Affected: Micronaut Core versions 4.3.0–4.10.21 (fixed in 4.10.22). A cache in TimeConverterRegistrar stores DateTimeFormatter instances in an unbounded ConcurrentHashMap keyed by pattern+Locale derived from the @Format annotation and the HTTP Accep...

CVE-2026-44241

Micronaut Framework is a JVM-based full stack Java framework designed for building modular, easily testable JVM applications. From 4.3.0 to before 4.10.22, TimeConverterRegistrar caches DateTimeFormatter instances in an unbounded ConcurrentHashMap whose key is derived from the @Format annotation...

CVE-2026-44241 Micronaut Framework: Unbounded formattersCache in TimeConverterRegistrar Allows Memory Exhaustion via Accept-Language Header

Micronaut Framework is a JVM-based full stack Java framework designed for building modular, easily testable JVM applications. From 4.3.0 to before 4.10.22, 3.10.6, and 3.8.14, TimeConverterRegistrar caches DateTimeFormatter instances in an unbounded ConcurrentHashMap whose key is derived from the...

CVE-2026-44242

CVE-2026-44242 affects Micronaut Framework when a non-default ResourceBundleMessageSource bean is registered. The bundleCache is a ConcurrentHashMap unbounded by design, allowing an attacker to flood the server with unique Accept-Language headers (while requesting HTML error responses), creating ...

CVE-2026-44242 Micronaut Framework: Unbounded bundleCache in ResourceBundleMessageSource Allows Memory Exhaustion via Accept-Language Header

Micronaut Framework is a JVM-based full stack Java framework designed for building modular, easily testable JVM applications. Prior to 4.10.22, the bundleCache is keyed by Locale, baseName where the locale originates from the HTTP Accept-Language header. In applications that explicitly register a...

CVE-2026-44242 Micronaut Framework: Unbounded bundleCache in ResourceBundleMessageSource Allows Memory Exhaustion via Accept-Language Header

Micronaut Framework is a JVM-based full stack Java framework designed for building modular, easily testable JVM applications. Prior to 4.10.22, the bundleCache is keyed by Locale, baseName where the locale originates from the HTTP Accept-Language header. In applications that explicitly register a...

CVE-2026-44242 Micronaut Framework: Unbounded bundleCache in ResourceBundleMessageSource Allows Memory Exhaustion via Accept-Language Header

Micronaut Framework is a JVM-based full stack Java framework designed for building modular, easily testable JVM applications. Prior to 4.10.22, the bundleCache is keyed by Locale, baseName where the locale originates from the HTTP Accept-Language header. In applications that explicitly register a...

CVE-2026-41683

i18next-http-middleware is a middleware to be used with Node.js web frameworks like express or Fastify and also for Deno. Prior to version 3.9.3, i18next-http-middleware wrote user-controlled language values into the Content-Language response header after passing them through utils.escape, which ...

CVE-2026-41683 HTTP response splitting and DoS in i18next-http-middleware via unsanitised Content-Language header

i18next-http-middleware is a middleware to be used with Node.js web frameworks like express or Fastify and also for Deno. Prior to version 3.9.3, i18next-http-middleware wrote user-controlled language values into the Content-Language response header after passing them through utils.escape, which ...

CVE-2026-41683 HTTP response splitting and DoS in i18next-http-middleware via unsanitised Content-Language header

i18next-http-middleware is a middleware to be used with Node.js web frameworks like express or Fastify and also for Deno. Prior to version 3.9.3, i18next-http-middleware wrote user-controlled language values into the Content-Language response header after passing them through utils.escape, which ...

CVE-2026-41683

CVE-2026-41683 affects i18next-http-middleware prior to 3.9.3. The root cause is that user-controlled language values (lng) were passed, via unsafe escaping, into the Content-Language header, potentially allowing HTTP response splitting or DoS depending on Node.js version. Older i18next (&lt; 19....