How severe is CVE-2014-1591?

CVE-2014-1591 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2014-1591 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-1591?

CVE-2014-1591 primarily affects Mozilla Firefox. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-1591?

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

When was CVE-2014-1591 published?

CVE-2014-1591 was published on 2014-12-11 and last updated on 2026-06-17.

CVE-2014-1591

CVE-2014-1591 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 4.3. 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-199.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-199
Affected product: Mozilla Firefox
Published: 2014-12-11
Last modified: 2026-06-17

Description

Mozilla Firefox 33.0 and SeaMonkey before 2.31 include path strings in CSP violation reports, which allows remote attackers to obtain sensitive information via a web site that receives a report after a redirect.

Frequently asked questions

What is CVE-2014-1591?: Mozilla Firefox 33.0 and SeaMonkey before 2.31 include path strings in CSP violation reports, which allows remote attackers to obtain sensitive information via a web site that receives a report after a redirect.
How severe is CVE-2014-1591?: CVE-2014-1591 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2014-1591 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-1591?: CVE-2014-1591 primarily affects Mozilla Firefox. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-1591?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-1591 published?: CVE-2014-1591 was published on 2014-12-11 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:mozilla:firefox:33.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*

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