CVE-2026-67987
Last modified
CVE-2026-67987 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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 <think> tags can cause excessive CPU consumption in two consecutive regular expressions and delay chat-completion processing. EPSS estimates a 0.17% chance of exploitation in the next 30 days.
Description
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 <think> tags can cause excessive CPU consumption in two consecutive regular expressions and delay chat-completion processing
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| — | — | n/a |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-67987?
How severe is CVE-2026-67987?
How do I fix CVE-2026-67987?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-67976The Ref::SignalGen component of fprime framework v4.2.2 does…7.5
- CVE-2026-67977An integer overflow in the Svc::FileDownlink::SendPartial co…7.5
- CVE-2026-67978An issue in the SBN UDP interface of NASA cFS v7.0.1 allows …7.5
- CVE-2026-67979Incorrect access control in the Executive Services dynamic a…9.1
- CVE-2026-6798The 2Download Connector for 2DL Hosted Checkout plugin for W…5.3
- CVE-2026-67986amazing-print/amazing_print at commit dc890dfafdf07088ea901d…8.4
- CVE-2026-67989crmne/ruby_llm at commit fa6f279847d6d7027814539d9c0dfc3bbdf…7.5
- CVE-2026-6799A security flaw has been discovered in Comfast CF-N1-S 2.6.0…6.3
- CVE-2026-67990basecamp/upright at commit efe4f2e5254ac6e57e45d2261804cca74…5.4
- CVE-2026-67991crmne/ruby_llm at commit fa6f279847d6d7027814539d9c0dfc3bbdf…7.5
- CVE-2026-67993basecamp/upright at commit efe4f2e5254ac6e57e45d2261804cca74…8.8
- CVE-2026-6800The FastBots plugin for WordPress is vulnerable to Stored Cr…4.4
Are you affected by CVE-2026-67987?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST