CVE-2016-7416: n/a vulnerability

CVE-2016-7416: ext/intl/msgformat/msgformat_format.c in PHP before 5.6.26 and 7.x before 7.0.11 does not properly restrict...

ext/intl/msgformat/msgformat_format.c in PHP before 5.6.26 and 7.x before 7.0.11 does not properly restrict the locale length provided to the Locale class in the ICU library, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a MessageFormatter::formatMessage call with a long first argument.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 01:57 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2016-7416 is a PHP intl extension flaw where an overly long locale value can crash an application using MessageFormatter::formatMessage. The main documented business impact is denial of service. The record also says “possibly unspecified other impact,” but the public sources provided do not clarify that further. Exposure is most likely in applications running affected PHP versions with the intl extension enabled and code paths accepting user-influenced locale values for MessageFormatter::formatMessage. Systems already on PHP 5.6.26, 7.0.11, or vendor-fixed packages are less likely exposed. Treat as a maintenance-priority availability issue for affected PHP applications, especially public-facing services. Prioritize patching where user input can influence locale formatting. No source provided confirms active exploitation or clear data compromise impact. Mitigation focus: Upgrade PHP to 5.6.26, 7.0.11, or later supported fixed releases.; Apply distribution vendor updates from Gentoo, Red Hat, or relevant package maintainers.; Review application handling of user-supplied locale values reaching MessageFormatter::formatMessage..

Prepared: Jun 13, 2026, 14:11 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Sep 17, 2016, 21:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

6Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
GLSA-201611-22CVE reference · vendor-advisory, x_refsource_GENTOO
RHSA-2018:1296CVE reference · vendor-advisory, x_refsource_REDHAT
https://bugs.php.net/bug.php?id=73007CVE reference · x_refsource_CONFIRM
https://www.tenable.com/security/tns-2016-19CVE reference · x_refsource_CONFIRM
https://github.com/php/php-src/commit/6d55ba265637d6adf0ba7e9c9ef11187d1ec2f5b?w=1CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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