How severe is CVE-2013-0243?

CVE-2013-0243 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2013-0243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-0243?

CVE-2013-0243 affects Haskell Hs-tls. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2013-0243?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2013-0243 published?

CVE-2013-0243 was published on 2019-12-05 and last updated on 2026-06-16.

CVE-2013-0243

CVE-2013-0243 is a high-severity vulnerability in Haskell Hs-tls with a CVSS 3.x base score of 7.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.4)
CVSS v2: 5.8
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Haskell Hs-tls
Published: 2019-12-05
Last modified: 2026-06-16

Description

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

Frequently asked questions

What is 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
How severe is CVE-2013-0243?: CVE-2013-0243 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2013-0243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-0243?: CVE-2013-0243 affects Haskell Hs-tls. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2013-0243?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2013-0243 published?: CVE-2013-0243 was published on 2019-12-05 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:haskell:hs-tls:*:*:*:*:*:*:*:*

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