How severe is CVE-2012-5822?

CVE-2012-5822 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-2012-5822 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-5822?

CVE-2012-5822 affects Mozilla Zamboni. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2012-5822?

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-2012-5822 published?

CVE-2012-5822 was published on 2012-11-04 and last updated on 2026-06-16.

CVE-2012-5822

CVE-2012-5822 is a high-severity vulnerability in Mozilla Zamboni 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-295.

Key facts

Severity: High (CVSS 3.x base score 7.4)
CVSS v2: 5.8
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Mozilla Zamboni
Published: 2012-11-04
Last modified: 2026-06-16

Description

The contribution feature in Zamboni does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate, related to use of the Python urllib2 library.

Frequently asked questions

What is CVE-2012-5822?: The contribution feature in Zamboni does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate, related to use of the Python urllib2 library.
How severe is CVE-2012-5822?: CVE-2012-5822 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-2012-5822 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-5822?: CVE-2012-5822 affects Mozilla Zamboni. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2012-5822?: 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-2012-5822 published?: CVE-2012-5822 was published on 2012-11-04 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:mozilla:zamboni:-:*:*:*:*:*:*:*

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