ext/wddx/wddx.c in PHP before 5.6.25 and 7.x before 7.0.10 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or possibly have unspecified other impact via a malformed wddxPacket XML document that is mishandled in a wddx_deserialize call, as demonstrated by a tag that lacks a < (less than) character.
CVE-2016-7131
HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.5; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 9%CVSS: 7.5Exploit: NoneExposed: 0
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 94.6%
- KEV
- Not listed
Published
September 12, 2016
Last Modified
May 6, 2026
References (22)
- cve@mitrehttp://openwall.com/lists/oss-security/2016/09/02/9
- cve@mitrehttp://rhn.redhat.com/errata/RHSA-2016-2750.html
- cve@mitrehttp://www.php.net/ChangeLog-5.php
- cve@mitrehttp://www.php.net/ChangeLog-7.php
- cve@mitrehttp://www.securityfocus.com/bid/92768
- cve@mitrehttp://www.securitytracker.com/id/1036680
- cve@mitrehttps://bugs.php.net/bug.php?id=72790
- cve@mitrehttps://github.com/php/php-src/commit/0c8a2a2cd1056b7dc403eacb5d2c0eec6ce47c6f
- cve@mitrehttps://github.com/php/php-src/commit/a14fdb9746262549bbbb96abb87338bacd147e1b?w=1
- cve@mitrehttps://security.gentoo.org/glsa/201611-22
- cve@mitrehttps://www.tenable.com/security/tns-2016-19
- af854a3a-2127-422b-91ae-364da2661108http://openwall.com/lists/oss-security/2016/09/02/9
- af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2016-2750.html
- af854a3a-2127-422b-91ae-364da2661108http://www.php.net/ChangeLog-5.php
- af854a3a-2127-422b-91ae-364da2661108http://www.php.net/ChangeLog-7.php
Vendor Advisories for CVE-2016-7131(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(2)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | php7.0-zip (7.0.8-0ubuntu0.16.04.3) @ xenial | 2026-05-22 | ubuntu |
| redhat | rh-php56-php-pear-1:1.9.5-4.el7 | 2016-11-15 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Additional Vendor Advisories
(1)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Frequently asked(5)
What is CVE-2016-7131?
CVE-2016-7131 is a high vulnerability published on September 12, 2016. ext/wddx/wddx.c in PHP before 5.6.25 and 7.x before 7.0.10 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or possibly have unspecified other impact via a malformed wddxPacket XML document that is mishandled in a wddx_deserialize call, as…
When was CVE-2016-7131 disclosed?
CVE-2016-7131 was first published in the National Vulnerability Database on September 12, 2016, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-7131 actively exploited?
CVE-2016-7131 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2016-7131?
CVE-2016-7131 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2016-7131?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-7131, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2016-7131
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