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VulnerabilityPublished Updated

CVE-2025-5115: Org.eclipse.jetty.http2:http2 common: Eclipse Jetty affected by MadeYouReset HTTP/2 vulnerability

Affects org.eclipse.jetty.http2:http2-commonSource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2025-5115· High 7.7

Not known to be exploited · CVSS 7.7 High : upgrade to 9.4.58 soon.

Data as of 4 Nov 2026, 18:16 UTC

CVSS 4.0 base score
7.7High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (eclipse)CVSS 4.07.7
Patch
Available – fixed in 9.4.58, 10.0.26, 11.0.26 +2
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 Aug 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 4 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Mavenorg.eclipse.jetty.http2:http2-commonAffected
  • >=9.3.0 <9.4.58
Fixed in
  • 9.4.58
Mavenorg.eclipse.jetty.http2:http2-commonAffected
  • >=10.0.0 <10.0.26
Fixed in
  • 10.0.26
Mavenorg.eclipse.jetty.http2:http2-commonAffected
  • >=11.0.0 <11.0.26
Fixed in
  • 11.0.26
Mavenorg.eclipse.jetty.http2:jetty-http2-commonAffected
  • >=12.0.0 <12.0.25
Fixed in
  • 12.0.25
Mavenorg.eclipse.jetty.http2:jetty-http2-commonAffected
  • >=12.1.0.alpha0 <12.1.0.beta3
Fixed in
  • 12.1.0.beta3

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A patch is available for Eclipse Jetty http2-common in versions 9.4.58, 10.0.26, 11.0.26, 12.0.25, and 12.1.0.beta3. Users should upgrade to these fixed versions to remediate the vulnerability. Additionally, mitigating controls include limiting the number and rate of RST_STREAM frames sent from the server and limiting control frames such as WINDOW_UPDATE and PRIORITY sent by clients, treating protocol flow errors as connection errors. Since this is a protocol-level vulnerability affecting multiple implementations, coordinated mitigation efforts are recommended.

Description

CVE-2025-5115, known as the MadeYouReset vulnerability, is a denial of service flaw in the HTTP/2 protocol affecting the Eclipse Jetty http2-common library. It exploits a design issue where the server incorrectly counts active streams when streams are reset, allowing an attacker to exhaust server resources by repeatedly triggering stream resets via malformed HTTP/2 control frames. This leads to CPU or memory exhaustion, causing service disruption. The vulnerability affects multiple Jetty versions prior to fixed releases and has a CVSS score of 7.5 (high severity).

References

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