Description
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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 8 | php5 | 5.6.26+dfsg-0+deb8u1 | DSA-3689-1 |
| Debian 7 | php5 | 5.4.45-0+deb7u6 | DLA-749-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | php7.0 | 7.0.8-0ubuntu0.16.04.3 | USN-3095-1 |
| Ubuntu 14.04 LTS | php5 | 5.5.9+dfsg-1ubuntu4.20 | USN-3095-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 3 | rh-php70-php +29 | 7.0.27-1.el6 | RHSA-2018:1296 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | php5 | 5.5.14-78.1 | SUSE-SU-2016:2477-1 |
| SLES 12 SP1 | php7 | 7.0.7-15.1 | SUSE-SU-2016:2460-1 |
| SLES 12 | php5 | 5.5.14-78.1 | SUSE-SU-2016:2477-2, SUSE-SU-2016:2477-1 |
| SLES 12 | php7 | 7.0.7-15.1 | SUSE-SU-2016:2460-2, SUSE-SU-2016:2460-1 |
| SLES 11 SP4 | php53 | 5.3.17-84.1 | SUSE-SU-2016:2459-1 |
| SLES 11 SP3 | php53 | 5.3.17-84.1 | SUSE-SU-2016:2459-1 |
| SLES 11 SP2 | php53 | 5.3.17-58.1 | SUSE-SU-2016:2461-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 11 SP4 | php53 | 5.3.17-84.1 | SUSE-SU-2016:2459-1 |
| SUSE OpenStack Cloud 5 | php53 | 5.3.17-84.1 | SUSE-SU-2016:2459-1 |
| SUSE Manager Proxy 2.1 | php53 | 5.3.17-84.1 | SUSE-SU-2016:2459-1 |
| SUSE Manager 2.1 | php53 | 5.3.17-84.1 | SUSE-SU-2016:2459-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | php53 | 5.3.17-84.1 | SUSE-SU-2016:2459-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.3 | php | 5.6.27-r0 | — |
| Alpine v3.2 | php | 5.6.27-r0 | — |
Advisories 10
- RHSA-2018:1296 Red Hat Security Advisory: rh-php70-php security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-3095-1 php5, php7.0 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-749-1 php5 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3689-1 php5 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2016:2460-1 Security update for php7 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2460-2 Security update for php7 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2459-1 Security update for php53 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2461-1 Security update for php53 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2477-2 Security update for php5 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2477-1 Security update for php5 SUSE / openSUSE Security Updates · May 2, 2025
References
- 93008 vdb-entry
- http://www.php.net/ChangeLog-7.php
- GLSA-201611-22 vendor-advisory
- 1036836 vdb-entry
- [oss-security] 20160915 Re: CVE assignment for PHP 5.6.26 and 7.0.11 mailing-list
- RHSA-2018:1296 vendor-advisory
- https://bugs.php.net/bug.php?id=73007
- http://www.php.net/ChangeLog-5.php
- https://www.tenable.com/security/tns-2016-19
- https://github.com/php/php-src/commit/6d55ba265637d6adf0ba7e9c9ef11187d1ec2f5b?w=1