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CVE-2026-18659VulnerabilityPublished Updated

Jetty9:

Affects jetty9Source GCVE Database

0
Authoritative record:CVE-2026-18659· Medium 6.9

Not known to be exploited · CVSS 6.9 Medium.

Data as of 28 Oct 2026, 22:28 UTC

CVSS 4.0 base score
6.9Medium
How severe the flaw is on the 0–10 CVSS scale.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10jetty12pkg:deb/ubuntu/jetty12?arch=source&distro=stonkingOther threatsAffected
  • =12.0.32-1
Fixed in–
Ubuntu 26.10jetty9pkg:deb/ubuntu/jetty9?arch=source&distro=stonkingOther threatsAffected
  • =9.4.58-1
  • =9.4.58-2
Fixed in–
Ubuntu 26.04 LTSjetty12pkg:deb/ubuntu/jetty12?arch=source&distro=resoluteOther threatsAffected
  • =12.0.17-3.1
  • =12.0.32-1
Fixed in–
Ubuntu 26.04 LTSjetty9pkg:deb/ubuntu/jetty9?arch=source&distro=resoluteOther threatsAffected
  • =9.4.57-1
  • =9.4.57-1.1
  • =9.4.58-1
Fixed in–
Ubuntu 24.04 LTSjetty9pkg:deb/ubuntu/jetty9?arch=source&distro=nobleOther threatsAffected
  • =9.4.51-2
  • =9.4.53-1
Fixed in–
Ubuntu 22.04 LTSjetty9pkg:deb/ubuntu/jetty9?arch=source&distro=jammyOther threatsAffected
  • 9.4.39-3 – 9.4.45-1
5 affected builds
Fixed in–

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

Description

In Eclipse Jetty, across various versions of `jetty-security`, and `jetty-eeN-security`, and `jetty-eeN-servlet`, the Jakarta Spec constraints defined as `http-method-omission` can be bypassed by using substrings of the defined HTTP Methods.

References

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