How severe is CVE-2016-6332?

CVE-2016-6332 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2016-6332 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-6332?

CVE-2016-6332 primarily affects Mediawiki. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-6332?

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-2016-6332 published?

CVE-2016-6332 was published on 2017-04-20 and last updated on 2026-06-17.

CVE-2016-6332

CVE-2016-6332 is a high-severity vulnerability in Mediawiki with a CVSS 3.x base score of 7.5. 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-200.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Mediawiki
Published: 2017-04-20
Last modified: 2026-06-17

Description

MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1, when $wgBlockDisablesLogin is true, might allow remote attackers to obtain sensitive information by leveraging failure to terminate sessions when a user account is blocked.

Frequently asked questions

What is CVE-2016-6332?: MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1, when $wgBlockDisablesLogin is true, might allow remote attackers to obtain sensitive information by leveraging failure to terminate sessions when a user account is blocked.
How severe is CVE-2016-6332?: CVE-2016-6332 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2016-6332 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-6332?: CVE-2016-6332 primarily affects Mediawiki. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-6332?: 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-2016-6332 published?: CVE-2016-6332 was published on 2017-04-20 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.26.0:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.26.1:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.26.2:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.26.3:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.26.4:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.27.0:*:*:*:*:*:*:*

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