Arbitrary Code Execution Vulnerability in Puma Web Server
CVE-2026-68006

9.1CRITICAL

Key Information:

Vendor

Puma

Status
Puma Web Server
Vendor
CVE Published:
10 September 2026

What is CVE-2026-68006?

An arbitrary code execution vulnerability exists in Puma versions up to 5.0.0 and including 8.0.3. This flaw allows attackers to execute arbitrary code through exploitation of the http11_parser.rl file in the ext/puma_http11 module. Implementing the appropriate security patch is crucial to protect against potential exploits targeting this vulnerability.

References

https://github.com/czx1111/cve/issues/1

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.