CVE-2026-5086: Crypt::SecretBuffer versions before 0.019 for Perl is suseceptible to timing attacks. For example, if Crypt::

Q: How do I fix CVE-2026-5086?

crypt\: upgrade to 0.019. Exact commands for each OS are on this page.

Q: Is CVE-2026-5086 being exploited?

CVE-2026-5086 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-5086 affect?

CVE-2026-5086 affects crypt\. Severity is high (CVSS 7.5). Crypt::SecretBuffer versions before 0.019 for Perl is suseceptible to timing attacks. For example, if Crypt::SecretBuffer was used to store and compare plaintext passwords, then discrepencies in timing could be used to guess the secret pas

Q: How urgent is CVE-2026-5086?

Priority 40/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2026-5086 is a high-severity flaw (CVSS 7.5) affecting crypt\. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Crypt::SecretBuffer versions before 0.019 for Perl is suseceptible to timing attacks. For example, if Crypt::SecretBuffer was used to store and compare plaintext passwords, then discrepencies in timing could be used to guess the secret password.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 66%)
CISA exploited list	No
Weakness	CWE-208
Published	2026-04-13
Last modified	2026-10-26

Publisher (CNA): CPANSec · Vendor: nerdvana

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-13 23:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

nerdvana crypt\ UPGRADE

Affected: < 0.019

Fixed in: 0.019

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy crypt || rpm -q crypt || crypt --version

2. UPGRADE to 0.019 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade crypt

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade crypt

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-5086?

crypt\: upgrade to 0.019. Exact commands for each OS are on this page.

Is CVE-2026-5086 being exploited?

CVE-2026-5086 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-5086 affect?

CVE-2026-5086 affects crypt\. Severity is high (CVSS 7.5). Crypt::SecretBuffer versions before 0.019 for Perl is suseceptible to timing attacks. For example, if Crypt::SecretBuffer was used to store and compare plaintext passwords, then discrepencies in timing could be used to guess the secret pas

How urgent is CVE-2026-5086?

Priority 40/100. High severity; Remotely exploitable, no login, no user action

Software pages

Perl vulnerabilities

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References

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