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

CVE-2013-10031

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

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

HIGH · CVSS 7.5 EPSS 0.00042
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-1254Incorrect Comparison Logic Granularity
▤

Affected Products & Versions

1
plack plack-middleware-session< 0.17
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · 9b29abf9-4ab0-4765-b253-1875cd9b441e
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD09 Dec 2025 · 01:16 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/plack/Plack-Middleware-Session/commit/b7f0252269ba1bb812b5dc02303754fe94c808e4Patch
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