HMAC Comparison Timing Attacks in Plack-Middleware-Session by Plack
CVE-2013-10031

7.5HIGH

Key Information:

Vendor

Miyagawa

Status
Plack::middleware::session
Vendor
CVE Published:
9 December 2025

What is CVE-2013-10031?

The Plack-Middleware-Session prior to version 0.17 is susceptible to HMAC comparison timing attacks. These security concerns can allow attackers to exploit the differences in response times to determine valid HMACs, potentially leading to unauthorized access or data manipulation. It is crucial for users of the affected versions to update to the latest version to mitigate these vulnerabilities.

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Deploy the Patch

Affected Version(s)

Plack::Middleware::Session 0.01 < 0.17

References

https://github.com/plack/Plack-Middleware-Session/commit/...
patch

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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