--- title: Improper parsing of W3C baggage headers may lead to DoS description: CVE-2026-50276 is a high-severity (CVSS 7.5) denial-of-service vulnerability in the Datadog Ruby tracing library dd-trace-rb. The flaw stems from W3C baggage... canonical: https://daily.dev/posts/improper-parsing-of-w3c-baggage-headers-may-lead-to-dos-unmzdvdu5 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Improper parsing of W3C baggage headers may lead to DoS | daily.dev og:description: CVE-2026-50276 is a high-severity (CVSS 7.5) denial-of-service vulnerability in the Datadog Ruby tracing library dd-trace-rb. The flaw stems from W3C baggage... og:url: https://daily.dev/posts/improper-parsing-of-w3c-baggage-headers-may-lead-to-dos-unmzdvdu5 og:image: https://api.daily.dev/og/posts/UnMzdVDU5.png og:image:alt: Improper parsing of W3C baggage headers may lead to DoS og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Improper parsing of W3C baggage headers may lead to DoS **[RUBYLAND](https://daily.dev/sources/rubyla)** · 1 min read · 0 upvotes · 0 comments ## Summary CVE-2026-50276 is a high-severity (CVSS 7.5) denial-of-service vulnerability in the Datadog Ruby tracing library dd-trace-rb. The flaw stems from W3C baggage HTTP header parsing that enforces item-count and byte-size limits only during injection, not extraction. A remote unauthenticated attacker can send requests with arbitrarily large or numerous baggage key-value pairs, causing unbounded CPU and memory consumption. Since baggage propagation is enabled by default, any internet-facing Ruby service instrumented with an affected tracer version is exposed. The fix is available in dd-trace-rb version 2.32.0 or later. ## Full article daily.dev links to this article rather than hosting it. 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