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PatchSiren cyber security CVE debrief

CVE-2026-5086 NERDVANA CVE debrief

CVE-2026-5086 is a high-severity vulnerability in Crypt::SecretBuffer versions before 0.019 for Perl, susceptible to timing attacks. If used to store and compare plaintext passwords, discrepancies in timing could be used to guess the secret password. Defenders responsible for Perl systems using Crypt::SecretBuffer should assess potential exposure to timing attacks and prioritize verification and updates. The vulnerability's impact is significant as it could allow attackers to exploit timing discrepancies to gain unauthorized access. It is crucial for defenders to verify if their systems use vulnerable versions and assess potential exposure to mitigate the risk.

Vendor
NERDVANA
Product
Crypt::SecretBuffer
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-13
Original CVE updated
2026-10-26
Advisory published
2026-04-13
Advisory updated
2026-10-26

Who should care

Defenders responsible for Perl systems using Crypt::SecretBuffer should assess potential exposure to timing attacks and prioritize verification and updates.

Why it matters

CVE-2026-5086 is a high-severity vulnerability in Crypt::SecretBuffer versions before 0.019 for Perl, susceptible to timing attacks. Defenders should prioritize verifying if their systems use vulnerable versions and assess potential exposure.

  • Verify if systems use vulnerable versions of Crypt::SecretBuffer
  • Assess potential exposure to timing attacks
  • Update to version 0.019 or later if possible

Technical summary

Crypt::SecretBuffer versions before 0.019 for Perl are susceptible to timing attacks. If used to store and compare plaintext passwords, discrepancies in timing could be used to guess the secret password. This vulnerability is particularly concerning for systems that handle sensitive information, such as password storage. Defenders should prioritize verifying if their systems use vulnerable versions of Crypt::SecretBuffer and assess potential exposure to timing attacks. Updating to version 0.019 or later if possible is recommended to mitigate this vulnerability.

Defensive priority

Defenders should prioritize verifying if their systems use vulnerable versions of Crypt::SecretBuffer and assess potential exposure to timing attacks.

Recommended defensive actions

  • Verify if systems use vulnerable versions of Crypt::SecretBuffer
  • Assess potential exposure to timing attacks
  • Update to version 0.019 or later if possible

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, its severity, and potential impact. However, specific details on exploitation or affected systems are limited.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-5086 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-5086

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-5086 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-5086

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://metacpan.org/release/NERDVANA/Crypt-SecretBuffer-0.019/source/Changes

    9b29abf9-4ab0-4765-b253-1875cd9b441e - Product, Release Notes

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.