EUVD-2026-69301

A flaw was found in openshift/oauth-server. The OAuth login and error page endpoints pass the unauthenticated Accept-Language header to golang.org/x/text/language.ParseAcceptLanguage without input validation. A bypass of the CVE-2022-32149 mitigation exists: the upstream guard counts only '-'...

CVE-2020-27223

CVE-2020-27223 Using root@kitploit: $ mvn spring-boot:run 9.4.36.v20210114 root@kitploit: $ ./poc/cve-2020-27223-poc1.sh "timens":"58,557","acceptlanguage":"aab" real 0m0.093s 🐇 user 0m0.006s sys 0m0.007s "timens":"18,461,763,438","acceptlanguage":"ahn" real 0m35.339s 🐢 user 0m0.006s sys 0m0.006s...

CVE-2026-49329

A flaw was found in openshift/oauth-server. The OAuth login and error page endpoints pass the unauthenticated Accept-Language header to golang.org/x/text/language.ParseAcceptLanguage without input validation. A bypass of the CVE-2022-32149 mitigation exists: the upstream guard counts only '-'...

CVE-2026-49329

A flaw in openshift/oauth-server allows an unauthenticated attacker to trigger a quadratic-time denial of service by sending a crafted Accept-Language header using '_' separators to the OAuth login and error page endpoints. The root cause is a bypass of the CVE-2022-32149 mitigation : the upstrea...

CVE-2026-49329 Openshift/oauth-server: openshift/oauth-server: quadratic-time dos via accept-language header underscore bypass on unauthenticated login endpoints

A flaw was found in openshift/oauth-server. The OAuth login and error page endpoints pass the unauthenticated Accept-Language header to golang.org/x/text/language.ParseAcceptLanguage without input validation. A bypass of the CVE-2022-32149 mitigation exists: the upstream guard counts only '-'...

CVE-2026-49329

A flaw was found in openshift/oauth-server. The OAuth login and error page endpoints pass the unauthenticated Accept-Language header to golang.org/x/text/language.ParseAcceptLanguage without input validation. A bypass of the CVE-2022-32149 mitigation exists: the upstream guard counts only '-'...

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-2026-79658

Ech0 before 5.0.1 does not impose any size or shape limit on the Accept-Language header processed by its i18n middleware, which runs on every HTTP request. The header is passed unfiltered to go-i18n's NewLocalizer, which internally calls golang.org/x/text/language.ParseAcceptLanguage. The...

CVE-2026-79658 Ech0 before 5.0.1 Denial of Service via Accept-Language

Ech0 before 5.0.1 does not impose any size or shape limit on the Accept-Language header processed by its i18n middleware, which runs on every HTTP request. The header is passed unfiltered to go-i18n's NewLocalizer, which internally calls golang.org/x/text/language.ParseAcceptLanguage. The...

CVE-2026-79658

Ech0 versions before 5.0.1 are vulnerable to a denial-of-service attack via the Accept-Language header. The i18n middleware, which runs on every HTTP request, passes the header unfiltered to golang.org/x/text/language.ParseAcceptLanguage. A gap in the CVE-2022-32149 mitigation caps - characters b...

EUVD-2026-65456

Ech0 before 5.0.1 does not impose any size or shape limit on the Accept-Language header processed by its i18n middleware, which runs on every HTTP request. The header is passed unfiltered to go-i18n's NewLocalizer, which internally calls golang.org/x/text/language.ParseAcceptLanguage. The...

EUVD-2026-54578

Hono is a Web application framework that provides support for any JavaScript runtime. From 4.12.0 to 4.12.33, the languageDetector middleware is vulnerable to algorithmic complexity denial of service when processing a crafted language tag containing a large number of hyphen separated subtags. To...

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

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...

Regular Expression Denial of Service (ReDoS)

Overview Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS through the Locale middleware when processing unauthenticated HTTP requests containing a specially crafted Accept-Language header. An attacker can exhaust server CPU resources by sending large...

Regular Expression Denial of Service (ReDoS)

Overview Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS through the Locale middleware when processing unauthenticated HTTP requests containing a specially crafted Accept-Language header. An attacker can exhaust server CPU resources by sending large...

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...