How severe is CVE-2014-6393?

CVE-2014-6393 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2014-6393 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-6393?

CVE-2014-6393 primarily affects Openjsf Express. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-6393?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2014-6393 published?

CVE-2014-6393 was published on 2017-08-09 and last updated on 2026-06-17.

CVE-2014-6393

CVE-2014-6393 is a medium-severity vulnerability in Openjsf Express with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Openjsf Express
Published: 2017-08-09
Last modified: 2026-06-17

Description

The Express web framework before 3.11 and 4.x before 4.5 for Node.js does not provide a charset field in HTTP Content-Type headers in 400 level responses, which might allow remote attackers to conduct cross-site scripting (XSS) attacks via characters in a non-standard encoding.

Frequently asked questions

What is CVE-2014-6393?: The Express web framework before 3.11 and 4.x before 4.5 for Node.js does not provide a charset field in HTTP Content-Type headers in 400 level responses, which might allow remote attackers to conduct cross-site scripting (XSS) attacks via characters in a non-standard encoding.
How severe is CVE-2014-6393?: CVE-2014-6393 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2014-6393 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-6393?: CVE-2014-6393 primarily affects Openjsf Express. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-6393?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-6393 published?: CVE-2014-6393 was published on 2017-08-09 and last updated on 2026-06-17.

References

Affected products (15)

cpe:2.3:a:openjsf:express:*:*:*:*:*:*:*:*
cpe:2.3:a:openjsf:express:4.0.0:*:*:*:*:*:*:*
cpe:2.3:a:openjsf:express:4.1.0:*:*:*:*:*:*:*
cpe:2.3:a:openjsf:express:4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:openjsf:express:4.1.2:*:*:*:*:*:*:*
cpe:2.3:a:openjsf:express:4.2.0:*:*:*:*:*:*:*
cpe:2.3:a:openjsf:express:4.3.0:*:*:*:*:*:*:*
cpe:2.3:a:openjsf:express:4.3.1:*:*:*:*:*:*:*
cpe:2.3:a:openjsf:express:4.3.2:*:*:*:*:*:*:*
cpe:2.3:a:openjsf:express:4.4.0:*:*:*:*:*:*:*
cpe:2.3:a:openjsf:express:4.4.1:*:*:*:*:*:*:*
cpe:2.3:a:openjsf:express:4.4.2:*:*:*:*:*:*:*
cpe:2.3:a:openjsf:express:4.4.3:*:*:*:*:*:*:*
cpe:2.3:a:openjsf:express:4.4.4:*:*:*:*:*:*:*
cpe:2.3:a:openjsf:express:4.4.5:*:*:*:*:*:*:*

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