CVE-2009-5016
Integer overflow in the xml_utf8_decode function in ext/xml/xml.c in PHP before 5.2.11 makes it easier for remote attackers to bypass cross-site scripting (XSS) and SQL injection protection mechanisms via a crafted string that uses overlong UTF-8…
Does this matter?
Lower severity and a low EPSS score (2.65%). Track it; it rarely justifies an emergency change on its own.
Description
Integer overflow in the xml_utf8_decode function in ext/xml/xml.c in PHP before 5.2.11 makes it easier for remote attackers to bypass cross-site scripting (XSS) and SQL injection protection mechanisms via a crafted string that uses overlong UTF-8 encoding, a different vulnerability than CVE-2010-3870.
- CVSS 2.0
- 6.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
- EPSS
- 2.65% probability · 86th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-189
- Affected
- php/php
- Source
- cve@mitre.org
EPSS 2.7% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://bugs.php.net/bug.php?id=49687Exploit
- http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052836.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052845.html
- http://secunia.com/advisories/42410
- http://secunia.com/advisories/42812
- http://sirdarckcat.blogspot.com/2009/10/couple-of-unicode-issues-on-php-and.htmlExploit
- http://www.blackhat.com/presentations/bh-usa-09/VELANAVA/BHUSA09-VelaNava-FavoriteXSS-SLIDES.pdfExploit
- http://www.redhat.com/support/errata/RHSA-2010-0919.html
- http://www.redhat.com/support/errata/RHSA-2011-0195.html
- http://www.securityfocus.com/bid/44889
- http://www.ubuntu.com/usn/USN-1042-1
- http://www.vupen.com/english/advisories/2010/3081
- http://www.vupen.com/english/advisories/2011/0020
- http://www.vupen.com/english/advisories/2011/0021
- http://www.vupen.com/english/advisories/2011/0077
- http://bugs.php.net/bug.php?id=49687Exploit
- http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052836.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052845.html
- http://secunia.com/advisories/42410
- http://secunia.com/advisories/42812
- http://sirdarckcat.blogspot.com/2009/10/couple-of-unicode-issues-on-php-and.htmlExploit
- http://www.blackhat.com/presentations/bh-usa-09/VELANAVA/BHUSA09-VelaNava-FavoriteXSS-SLIDES.pdfExploit
- http://www.redhat.com/support/errata/RHSA-2010-0919.html
- http://www.redhat.com/support/errata/RHSA-2011-0195.html
- http://www.securityfocus.com/bid/44889
- http://www.ubuntu.com/usn/USN-1042-1
- http://www.vupen.com/english/advisories/2010/3081
- http://www.vupen.com/english/advisories/2011/0020
- http://www.vupen.com/english/advisories/2011/0021
- http://www.vupen.com/english/advisories/2011/0077
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.