What is CVE-2013-0243?

CVE-2013-0243 is a high-severity vulnerability in Haskell Hs-Tls, classified under Improper Input Validation. CVSS score: 7.4/10. Published 2019-12-05.

How severe is CVE-2013-0243?

High severity. CVSS v3 base score is 7.4 out of 10.

Improper input validation in Haskell Hs-Tls

CVE-2013-0243

haskell-tls-extra before 0.6.1 has Basic Constraints attribute vulnerability may lead to Man in the Middle attacks on TLS connections

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2019-12-05 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.010 (62.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Haskell Hs-Tls
Haskell-Tls-Extra — versions < 0.6.1

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

security-tracker.debian.org/tracker/CVE-2013-0243 (Third Party Advisory)
access.redhat.com/security/cve/cve-2013-0243 (Broken Link)
www.openwall.com/lists/oss-security/2013/01/30/6 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2013-0243?: CVE-2013-0243 is a high-severity vulnerability in Haskell Hs-Tls, classified under Improper Input Validation. CVSS score: 7.4/10. Published 2019-12-05.
How severe is CVE-2013-0243?: High severity. CVSS v3 base score is 7.4 out of 10.