MadeYouReset HTTP/2 vulnerability

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• eclipse jetty9.3.0 and later · up to 9.4.57 inclusive
• eclipse jetty10.0.0 and later · up to 10.0.25 inclusive
• eclipse jetty11.0.0 and later · up to 11.0.25 inclusive
• eclipse jetty12.0.0 and later · up to 12.0.21 inclusive
• eclipse jetty12.1.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (eclipse). Independent of NVD's CPE analysis and usually ahead of it.

• Eclipse Jetty Eclipse Jetty

  • >=9.3.0 and later · up to and including <=9.4.57affected · semver
  • >=10.0.0 and later · up to and including <=10.0.25affected · semver
  • >=11.0.0 and later · up to and including <=11.0.25affected · semver
  • >=12.0.0 and later · up to and including <=12.0.21affected · semver
  • >=12.1.0.alpha0 and later · up to and including <=12.1.0.alpha2affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2021-34429For Eclipse Jetty versions 9.4.37-9.4.42, 10.0.1-10.0.5 & 11.0.1-11.0.5, URIs can be crafted using some encoded characters to access the con
  60This week
• CVE-2021-28164In Eclipse Jetty 9.4.37.v20210219 to 9.4.38.v20210224, the default compliance mode allows requests with URIs that contain %2e or %2e%2e segm
  60This week
• CVE-2015-2080The exception handling code in Eclipse Jetty before 9.2.9.v20150224 allows remote attackers to obtain sensitive information from process mem
  53Plan

Published before and after this one in the same product

• ← EarlierCVE-2024-13009May 8, 2025 · Eclipse Jetty GZIP buffer release
  28Monitor
• ← EarlierCVE-2025-1948May 8, 2025 · Eclipse Jetty HTTP clients can increase memory allocation
  30Monitor
• Later →CVE-2025-11143Mar 5, 2026 · The Jetty URI parser has some key differences to other common parsers when evaluating invalid or unusual URIs.
  26Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1function expand(node) {2  return node.children.map(expand);3}

1const MAX_DEPTH = 32;2function expand(node, depth = 0) {3  if (depth > MAX_DEPTH) throw new Error("too deep");4  return node.children.map((c) => expand(c, depth + 1));5}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.