CVE-2023-31486: HTTP::Tiny before 0.083, a Perl core module since 5.13.9 and available standalone on CPAN, has an insecure def

Q: How do I fix CVE-2023-31486?

\: upgrade to 0.083; perl: upgrade to 5.38.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-31486 being exploited?

CVE-2023-31486 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-2023-31486 affect?

CVE-2023-31486 affects \, perl. Severity is high (CVSS 8.1). HTTP::Tiny before 0.083, a Perl core module since 5.13.9 and available standalone on CPAN, has an insecure default TLS configuration where users must opt in to verify certificates.

Q: How urgent is CVE-2023-31486?

Priority 53/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 8.1REMOTEUPGRADEUPGRADE

CVE-2023-31486 is a high-severity flaw (CVSS 8.1) affecting \, perl. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

HTTP::Tiny before 0.083, a Perl core module since 5.13.9 and available standalone on CPAN, has an insecure default TLS configuration where users must opt in to verify certificates.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	1.7% (top 22%)
CISA exploited list	No
Weakness	CWE-295
Published	2023-04-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: http\ · perl

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-04-29 00:15 UTCPublished CVE record published
2026-06-17 05:57 UTCUpdated Record last modified

http\ \ UPGRADE

Affected: < 0.083

Fixed in: 0.083

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.083 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade

Note

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

perl perl UPGRADE

Affected: < 5.38.0

Fixed in: 5.38.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 5.38.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade perl

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-2023-31486?

\: upgrade to 0.083; perl: upgrade to 5.38.0. Exact commands for each OS are on this page.

Is CVE-2023-31486 being exploited?

CVE-2023-31486 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-2023-31486 affect?

CVE-2023-31486 affects \, perl. Severity is high (CVSS 8.1). HTTP::Tiny before 0.083, a Perl core module since 5.13.9 and available standalone on CPAN, has an insecure default TLS configuration where users must opt in to verify certificates.

How urgent is CVE-2023-31486?

Priority 53/100. High severity; Remotely exploitable, no login, no user action

Software pages

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References

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