CVE-2026-68006 Puma - Remote Code Execution

Puma <= 8.0.3 contains a remote code execution caused by vulnerability in ext/puma_http11/http11_parser.rl, letting attackers execute arbitrary code remotely, exploit requires crafted request.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.53% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
10 September 2026
Updated
15 October 2026
Weakness
CWE-444

Vendor fix

Update to a version later than 8.0.3.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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