UBUNTU-CVE-2026-67987

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Source
https://ubuntu.com/security/CVE-2026-67987
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67987.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-67987
Upstream
Published
2026-09-29T20:17:00Z
Modified
2026-10-17T13:00:40Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

crmne/ruby_llm at commit fa6f279847d6d7027814539d9c0dfc3bbdfd2a83 contains polynomial-time regular expression denial-of-service conditions in think-tag response parsing on Ruby 3.1.x. A malicious or anomalous model response containing many unterminated tags can cause excessive CPU consumption in two consecutive regular expressions and delay chat-completion processing

References

Affected packages

Ubuntu:26.10 / ruby-llm

Package

Name
ruby-llm
Purl
pkg:deb/ubuntu/ruby-llm?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.16.0-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "ruby-llm",
            "binary_version":  "1.16.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-67987.json"