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Vulnerabilities

Vulnerability · CVE-2013-10031

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

Published Dec 9, 2025 · catalog updated Dec 11, 2025 · MIYAGAWA Plack::Middleware::Session

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2013-10031. EPSS is 0.29%. Act only if a listed version of MIYAGAWA Plack::Middleware::Session is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.29%
Remediation
Version ranges on file
Affected products
vendor MIYAGAWA Plack::Middleware::Session 0.01 <0.17

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor MIYAGAWA Plack::Middleware::Session 0.01 <0.170.01 <0.17

How to fix CVE-2013-10031

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2013-10031. EPSS is 0.29%. Act only if a listed version of MIYAGAWA Plack::Middleware::Session is installed.

Which versions are affected?

Compare what you have installed with MIYAGAWA Plack::Middleware::Session 0.01 <0.17 0.01 <0.17. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.29%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 9, 2025 · EUVD

    Detected

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

  2. Dec 11, 2025 · EUVD

    Updated

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

Sources

  • CVE.orgVulnerability recordCVE-2013-10031

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2013-10031

    30-day exploitation probability 0.29%

    first.org
  • EUVDVulnerability recordEUVD-2013-7289

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

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 2, 2026
  • CVE.orgOct 27, 2026
  • EUVDOct 27, 2026