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"...

CVE-2026-48834

Improper Handling of Length Parameter Inconsistency vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. Unauthenticated attackers can cause a denial of service via a specially crafted Accept-Language header that triggers excessive CPU consumption during parsing. Users...

CVE-2026-48834 Apache Answer: Denial of service via crafted Accept-Language header parsing

Improper Handling of Length Parameter Inconsistency vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. Unauthenticated attackers can cause a denial of service via a specially crafted Accept-Language header that triggers excessive CPU consumption during parsing. Users...

CVE-2026-48834

Apache Answer is affected by CVE-2026-48834 due to improper handling of a length parameter, allowing unauthenticated attackers to trigger denial of service by sending a crafted Accept-Language header that causes excessive CPU usage during parsing. Affected versions are up to 2.0.1; upgrading to 2...

Security Bulletin: Multiple Vulnerabilities in IBM API Connect

Summary Multiple vulnerabilities were addressed in IBM API Connect version 10.0.8.11 Vulnerability Details CVEID:CVE-2020-28851 DESCRIPTION: In x/text in Go 1.15.4, an "index out of range" panic occurs in language.ParseAcceptLanguage while parsing the -u- extension. x/text/language is supposed to...

Security Bulletin: Multiple Vulnerabilities in IBM API Connect

Summary Multiple vulnerabilities were addressed in IBM API Connect version 10.0.8.11 Vulnerability Details CVEID:CVE-2020-28851 DESCRIPTION: In x/text in Go 1.15.4, an "index out of range" panic occurs in language.ParseAcceptLanguage while parsing the -u- extension. x/text/language is supposed to...

GO-2026-6055 Gitea: ParseAcceptLanguage quadratic-time DoS via Locale middleware on unauthenticated requests in gitea.dev

Gitea: ParseAcceptLanguage quadratic-time DoS via Locale middleware on unauthenticated requests in gitea.dev...

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...

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...

Missing Release of Resource after Effective Lifetime

Overview Affected versions of this package are vulnerable to Missing Release of Resource after Effective Lifetime through the i18n.Middleware process, which processes the Accept-Language HTTP header without adequate filtering. An attacker can exhaust server CPU resources by sending specially...

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-2026-44242

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...

Astra Linux – Vulnerability in Python-Django

In Django 3.2 before 3.2.17, 4.0 before 4.0.9, and 4.1 before 4.1.6, the parsed values of the Accept-Language header are cached in order to avoid repeated parsing. This can lead to a potential denial-of-service vulnerability due to excessive memory usage if the raw value of the Accept-Language...

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...

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

In Go 1.15.4, a "index out of range" panic occurs in the language.ParseAcceptLanguage function during the parsing of the -u- extension. The language.ParseAcceptLanguage function is supposed to be able to parse an HTTP Accept-Language header...

CVE-2026-44242

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-2026-44241 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...