How severe is CVE-2014-9277?

CVE-2014-9277 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2014-9277 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-9277?

CVE-2014-9277 primarily affects Mediawiki. In total, 42 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-9277?

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-2014-9277 published?

CVE-2014-9277 was published on 2015-01-04 and last updated on 2026-06-17.

CVE-2014-9277

CVE-2014-9277 is a high-severity vulnerability in Mediawiki with a CVSS 2.0 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-77.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Mediawiki
Published: 2015-01-04
Last modified: 2026-06-17

Description

The wfMangleFlashPolicy function in OutputHandler.php in MediaWiki before 1.19.22, 1.20.x through 1.22.x before 1.22.14, and 1.23.x before 1.23.7 allows remote attackers to conduct PHP object injection attacks via a crafted string containing <cross-domain-policy> in a PHP format request, which causes the string length to change when converting the request to <NOT-cross-domain-policy>.

Frequently asked questions

What is CVE-2014-9277?: The wfMangleFlashPolicy function in OutputHandler.php in MediaWiki before 1.19.22, 1.20.x through 1.22.x before 1.22.14, and 1.23.x before 1.23.7 allows remote attackers to conduct PHP object injection attacks via a crafted string containing <cross-domain-policy> in a PHP format request, which causes the string length to change when converting the request to <NOT-cross-domain-policy>.
How severe is CVE-2014-9277?: CVE-2014-9277 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2014-9277 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-9277?: CVE-2014-9277 primarily affects Mediawiki. In total, 42 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-9277?: 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-2014-9277 published?: CVE-2014-9277 was published on 2015-01-04 and last updated on 2026-06-17.

References

Affected products (42)

cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.20:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.20.1:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.20.2:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.20.3:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.20.4:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.20.5:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.20.6:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.20.7:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.20.8:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.21:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.21.1:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.21.2:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.21.3:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.21.4:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.21.5:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.21.6:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.21.7:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.21.8:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.21.9:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.21.10:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.21.11:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.22.0:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.22.1:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.22.2:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.22.3:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.22.4:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.22.5:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.22.6:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.22.7:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.22.8:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.22.10:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.22.11:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.22.12:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.22.13:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.23.0:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.23.1:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.23.2:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.23.3:*:*:*:*:*:*:*
cpe:2.3:a:mediawiki:mediawiki:1.23.4:*:*:*:*:*:*:*

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