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VulnerabilityPublished Updated

CVE-2026-114370: undertow · (A flaw was found

Affects undertowSource GCVE Database

0
Authoritative record:CVE-2026-114370· Low 3.7

Not known to be exploited · CVSS 3.7 Low.

Data as of 27 Oct 2026, 07:12 UTC

CVSS 3.1 base score
3.7Low
How severe the flaw is on the 0–10 CVSS scale.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 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 26.10undertowpkg:deb/ubuntu/undertow?arch=source&distro=stonkingOther threatsAffected
  • =2.3.20-1ubuntu1
Fixed in–
Ubuntu 26.04 LTSundertowpkg:deb/ubuntu/undertow?arch=source&distro=resoluteOther threatsAffected
  • =2.3.18-2
  • =2.3.20-1
  • =2.3.20-1ubuntu1
Fixed in–
Ubuntu Pro 24.04 LTSundertowpkg:deb/ubuntu/undertow?arch=source&distro=esm-apps/nobleOther threatsAffected
  • =2.3.8-2
  • =2.3.8-2ubuntu0.1~esm1
Fixed in–
Ubuntu Pro 22.04 LTSundertowpkg:deb/ubuntu/undertow?arch=source&distro=esm-apps/jammyOther threatsAffected
  • 2.2.8-1 – 2.2.16-1ubuntu0.1~esm1
6 affected builds
Fixed in–
Ubuntu Pro 20.04 LTSundertowpkg:deb/ubuntu/undertow?arch=source&distro=esm-apps/focalOther threatsAffected
  • 2.0.23-1 – 2.0.29-1ubuntu0.1~esm1
5 affected builds
Fixed in–
Ubuntu Pro 18.04 LTSundertowpkg:deb/ubuntu/undertow?arch=source&distro=esm-apps/bionicOther threatsAffected
  • 1.4.20-1 – 1.4.23-3ubuntu0.1~esm1
7 affected builds
Fixed in–

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

AI-suggested

No immediate mitigation actions are specified.

Description

A low-severity vulnerability (CVE-2026-114370) was identified in the PathResourceManager component of the Undertow web server. The flaw has a CVSS score of 3.7, indicating limited impact primarily on confidentiality. No known exploits are reported in the wild. Multiple specific versions of Undertow are affected.

References

Community reviews

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