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    CVE-2009-1271

    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.

    Published:Dec 19, 2008
    Last Modified:Apr 23, 2026
    EPS:Apr 8, 2009
    EPSS Score:0.10218
    CVSS Score:5

    Affected Products

    Vendor
    Php
    Product
    Php

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-6104 (CVSS 6.3) — In PHP versions 8.4.* before 8.4.21 and 8.5.* before 8.5.6, when an encoding name containing an embedded NUL b…
    CVE-2026-7258 (CVSS 6.3) — In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, some fu…
    CVE-2026-6722 (CVSS 9.5) — In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the SOA…
    CVE-2026-7259 (CVSS 2.1) — In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, a misma…
    CVE-2026-7261 (CVSS 6.3) — In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, when So…
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    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
    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
    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
    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High