CVE-2009-5016
MEDIUM · CVSS 6.8EPSS 2.7%EU EUVD
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.
Key facts
- CVSS score
- 6.8 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:P- Weakness (CWE)
- CWE-189
- EPSS score
- 2.7% (86th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-4974)
- Published
- November 12, 2010
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-4974 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- php / php
- php / php
- php / php
- php / php
- php / php
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- php / php
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- php / php
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and 38 more…
References
- http://bugs.php.net/bug.php?id=49687(Exploit)
- 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.html(Exploit)
- http://www.blackhat.com/presentations/bh-usa-09/VELANAVA/BHUSA09-VelaNava-FavoriteXSS-SLIDES.pdf(Exploit)
- 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
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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