CVE-2009-1271
MEDIUM · CVSS 5.0EPSS 2.4%EU EUVD
The JSON_parser function (ext/json/JSON_parser.c) in PHP 5.2.x before 5.2.9 allows remote attackers to cause a denial of service (segmentation fault) via a malformed string to the json_decode API function.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- EPSS score
- 2.4% (84th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-1270)
- Published
- April 8, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-1270 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
- php / php
- php / php
- php / php
- php / php
- php / php
References
- http://cvs.php.net/viewvc.cgi/php-src/ext/json/JSON_parser.c?r1=1.1.2.14&r2=1.1.2.15
- http://lists.apple.com/archives/security-announce/2009/Sep/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
- http://secunia.com/advisories/34770
- http://secunia.com/advisories/34830
- http://secunia.com/advisories/34933
- http://secunia.com/advisories/35003
- http://secunia.com/advisories/35007
- http://secunia.com/advisories/35306
- http://secunia.com/advisories/35685
- http://secunia.com/advisories/36701
- http://support.apple.com/kb/HT3865
- http://www.debian.org/security/2009/dsa-1775
- http://www.debian.org/security/2009/dsa-1789
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:090
- http://www.openwall.com/lists/oss-security/2009/04/01/9
- http://www.php.net/releases/5_2_9.php(Vendor Advisory)
- http://www.redhat.com/support/errata/RHSA-2009-0350.html
- http://www.ubuntu.com/usn/USN-761-2
- https://usn.ubuntu.com/761-1/
- https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01451.html
- https://www.redhat.com/archives/fedora-package-announce/2009-May/msg01465.html
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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