CVE-2013-0263

MediumCVSS 5.1/10Last modified Jun 16, 2026

Description

Rack::Session::Cookie in Rack 1.5.x before 1.5.2, 1.4.x before 1.4.5, 1.3.x before 1.3.10, 1.2.x before 1.2.8, and 1.1.x before 1.1.6 allows remote attackers to guess the session cookie, gain privileges, and execute arbitrary code via a timing attack involving an HMAC comparison function that does not run in constant time.

Metrics

CVSS 2.0 5.1/10AV:N/AC:H/Au:N/C:P/I:P/A:P

Affected software

No affected versions have been published.

Timeline

Published: Feb 8, 2013
Last modified: Jun 16, 2026
NVD status: Modified

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