CVE-2017-11142

CVE-2017-11142 is a high-severity vulnerability in Php 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-400.

Key facts

• Severity: High (CVSS 3.x base score 7.5)
• CVSS v2: 7.8
• EPSS exploit prediction: 8% (94th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-400
• Affected product: Php
• Published: 2017-07-10
• Last modified: 2026-06-17

Description

In PHP before 5.6.31, 7.x before 7.0.17, and 7.1.x before 7.1.3, remote attackers could cause a CPU consumption denial of service attack by injecting long form variables, related to main/php_variables.c.

Frequently asked questions

What is CVE-2017-11142?

In PHP before 5.6.31, 7.x before 7.0.17, and 7.1.x before 7.1.3, remote attackers could cause a CPU consumption denial of service attack by injecting long form variables, related to main/php_variables.c.

How severe is CVE-2017-11142?

CVE-2017-11142 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 none, integrity none, and availability high.

Is CVE-2017-11142 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-11142?

CVE-2017-11142 primarily affects Php. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-11142?

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-2017-11142 published?

CVE-2017-11142 was published on 2017-07-10 and last updated on 2026-06-17.

References

• http://openwall.com/lists/oss-security/2017/07/10/6
• http://php.net/ChangeLog-5.php
• http://php.net/ChangeLog-7.php
• http://www.securityfocus.com/bid/99601
• https://bugs.php.net/bug.php?id=73807
• https://github.com/php/php-src/commit/0f8cf3b8497dc45c010c44ed9e96518e11e19fc3
• https://github.com/php/php-src/commit/a15bffd105ac28fd0dd9b596632dbf035238fda3
• https://security.netapp.com/advisory/ntap-20180112-0001/
• https://www.debian.org/security/2018/dsa-4081
• https://www.tenable.com/security/tns-2017-12

Affected products (21)

• cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.7:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.8:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.9:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.10:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.11:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.12:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.13:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.14:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.15:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.0.16:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:php:php:7.1.2:*:*:*:*:*:*:*

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• CVE-2009-4143 — Critical (CVSS 10.0): PHP before 5.2.12 does not properly handle session data, which has unspecified impact and attack vectors related to (1)…
• CVE-2008-5557 — Critical (CVSS 10.0): Heap-based buffer overflow in ext/mbstring/libmbfl/filters/mbfilter_htmlent.c in the mbstring extension in PHP 4.3.0…

All CVEs affecting Php →

Other CWE-400 (Uncontrolled Resource Consumption) vulnerabilities

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• CVE-2025-43193 — Critical (CVSS 9.8): The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.6, macOS Sonoma 14.7.7,…
• CVE-2025-24269 — Critical (CVSS 9.8): The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.4. An app may be able to…
• CVE-2025-24264 — Critical (CVSS 9.8): The issue was addressed with improved memory handling. This issue is fixed in Safari 18.4, iOS 18.4 and iPadOS 18.4,…
• CVE-2025-24260 — Critical (CVSS 9.8): The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.4, macOS Sonoma 14.7.5,…

Browse all CWE-400 (Uncontrolled Resource Consumption) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

• 45.84.120.3 (ipv4-addr)
• 79.137.34.248 (ipv4-addr)
• 221.161.235.168 (ipv4-addr)
• 200.196.50.91 (ipv4-addr)
• 187.51.208.158 (ipv4-addr)
• 187.141.71.166 (ipv4-addr)
• 187.110.238.50 (ipv4-addr)
• 182.93.50.90 (ipv4-addr)