CVE-2023-31486

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.

Published: 2023-04-29 Last update: 2025-01-30 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-31486 is rated Moderate Risk (58.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.77%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-31486

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-16 0.66% 0.77% +0.11%
2 2026-04-30 0.56% 0.66% +0.10%
3 2025-12-28 — 0.56% —

Full EPSS history (23 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-31486

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.1 3.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.2 5.9 [email protected]
8.1 3.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.2 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-31486

OS Trackers for CVE-2023-31486

vendor priority summary link
debian unimportant CVE-2023-31486 unimportant priority: Debian including 2 source packages (libhttp-tiny-perl, perl), 9 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 6, open 3. https://security-tracker.debian.org/tracker/CVE-2023-31486
gentoo normal CVE-2023-31486: 1 GLSA(s) (202411-09), 1 atom(s) (dev-lang/perl); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-31486
redhat medium — https://access.redhat.com/security/cve/CVE-2023-31486
suse high — https://www.suse.com/security/cve/CVE-2023-31486/
ubuntu medium CVE-2023-31486 medium priority: Ubuntu including 2 source packages (libhttp-tiny-perl, perl), 16 status rows across 8 suites (bionic, focal, jammy, kinetic, lunar, trusty, upstream, xenial): ignored 14, needed 2. https://ubuntu.com/security/CVE-2023-31486

Affected software / configurations for CVE-2023-31486

Vendor Product Version Raw CPE
http::tiny_project http::tiny < 0.083 cpe:2.3:a:http\:\:tiny_project:http\:\:tiny:*:*:*:*:*:*:*:*
perl perl < 5.38.0 cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:*

References for CVE-2023-31486

URL Tags
http://www.openwall.com/lists/oss-security/2023/04/29/1 Mailing List Patch
http://www.openwall.com/lists/oss-security/2023/05/03/3 Mailing List Patch
http://www.openwall.com/lists/oss-security/2023/05/03/5 Mailing List
http://www.openwall.com/lists/oss-security/2023/05/07/2 Mailing List Third Party Advisory
https://blog.hackeriet.no/perl-http-tiny-insecure-tls-default-affects-cpan-modules/ Mitigation Patch Third Party Advisory
https://github.com/chansen/p5-http-tiny/pull/153 Patch
https://hackeriet.github.io/cpan-http-tiny-overview/ Product
https://www.openwall.com/lists/oss-security/2023/04/18/14 Mailing List Patch
https://www.openwall.com/lists/oss-security/2023/05/03/4 Mailing List Third Party Advisory
https://www.reddit.com/r/perl/comments/111tadi/psa_httptiny_disabled_ssl_verification_by_default/ Issue Tracking
https://security.netapp.com/advisory/ntap-20241129-0011/
cvelogic Threat Intelligence