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Vulnerability record · CVE-2016-4345 · published 22 May 2016

CVE-2016-4345: Php integer overflow vulnerability

Php · Php

Integer overflow in the php_filter_encode_url function in ext/filter/sanitizing_filters.c in PHP before 7.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a long string, leading to a heap-based buffer overflow.

9.8 CVSS 3.1 Critical EPSS 5.2% · top 7.8% CWE-190 · Integer overflow
9.8CVSS 3.1 base score, v2 7.5
5.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Integer overflow in the php_filter_encode_url function in ext/filter/sanitizing_filters.c in PHP before 7.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a long string, leading to a heap-based buffer overflow.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://php.net/ChangeLog-7.php Release NotesVendor Advisory
http://www.openwall.com/lists/oss-security/2016/04/28/2 Mailing ListThird Party Advisory
https://bugs.php.net/bug.php?id=71637 ExploitIssue TrackingPatchVendor Advisory
http://php.net/ChangeLog-7.php Release NotesVendor Advisory
http://www.openwall.com/lists/oss-security/2016/04/28/2 Mailing ListThird Party Advisory
https://bugs.php.net/bug.php?id=71637 ExploitIssue TrackingPatchVendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-4345), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.