What is CVE-2013-10031?

CVE-2013-10031 is a high-severity vulnerability in Miyagawa Plack::middleware::session, classified under CWE-1254. CVSS score: 7.5/10. Published 2025-12-09.

How severe is CVE-2013-10031?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Miyagawa Plack::middleware::session

CVE-2013-10031

Plack-Middleware-Session versions before 0.17 may be vulnerable to HMAC comparison timing attacks

Published 2025-12-09 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (20.6th percentile), scored 2026-10-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Miyagawa Plack::middleware::session — versions 0.01
Plack Plack-Middleware-Session

Weakness classification (CWE)

CWE-1254

References

9b29abf9-4ab0-4765-b253-1875cd9b441e (Patch, patch)

Frequently asked questions

What is CVE-2013-10031?: CVE-2013-10031 is a high-severity vulnerability in Miyagawa Plack::middleware::session, classified under CWE-1254. CVSS score: 7.5/10. Published 2025-12-09.
How severe is CVE-2013-10031?: High severity. CVSS v3 base score is 7.5 out of 10.