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    CVE-2007-1521

    Double free vulnerability in PHP before 4.4.7, and 5.x before 5.2.2, allows context-dependent attackers to execute arbitrary code by interrupting the session_regenerate_id function, as demonstrated by calling a userspace error handler or triggering a memory limit violation.

    Published:Mar 20, 2007
    Last Modified:Apr 23, 2026
    EPS:Mar 20, 2007
    EPSS Score:0.16979
    CVSS Score:6.8

    Affected Products

    Vendor
    Php
    Product
    Php

    Exploits

    http://www.php-security.org/MOPB/MOPB-22-2007.htmlhttp://www.php-security.org/MOPB/MOPB-22-2007.htmlhttps://www.exploit-db.com/exploits/3479

    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-2026-7263 (CVSS 6.3) — In PHP versions 8.4.* before 8.4.21 and 8.5.* before 8.5.6, DOMNode::C14N() method may process the XML data in…
    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…
    CVE-2026-7262 (CVSS 2.9) — 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 a …
    CVE-2025-14179 (CVSS 7.4) — 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 PDO…
    CVE-2026-7568 (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, the met…

    References

    http://docs.info.apple.com/article.html?artnum=306172
    http://lists.apple.com/archives/security-announce//2007/Jul/msg00004.html
    http://secunia.com/advisories/24505
    http://secunia.com/advisories/25025
    http://secunia.com/advisories/25056
    http://secunia.com/advisories/25057
    http://secunia.com/advisories/25062
    http://secunia.com/advisories/25445
    http://secunia.com/advisories/26235
    http://security.gentoo.org/glsa/glsa-200705-19.xml
    http://us2.php.net/releases/4_4_7.php
    http://us2.php.net/releases/5_2_2.php
    http://www.debian.org/security/2007/dsa-1282
    http://www.debian.org/security/2007/dsa-1283
    http://www.novell.com/linux/security/advisories/2007_32_php.html
    http://www.php-security.org/MOPB/MOPB-22-2007.html
    http://www.securityfocus.com/bid/22968
    http://www.securityfocus.com/bid/25159
    http://www.ubuntu.com/usn/usn-455-1
    http://www.vupen.com/english/advisories/2007/0960
    http://www.vupen.com/english/advisories/2007/2732
    http://docs.info.apple.com/article.html?artnum=306172
    http://lists.apple.com/archives/security-announce//2007/Jul/msg00004.html
    http://secunia.com/advisories/24505
    http://secunia.com/advisories/25025
    http://secunia.com/advisories/25056
    http://secunia.com/advisories/25057
    http://secunia.com/advisories/25062
    http://secunia.com/advisories/25445
    http://secunia.com/advisories/26235
    http://security.gentoo.org/glsa/glsa-200705-19.xml
    http://us2.php.net/releases/4_4_7.php
    http://us2.php.net/releases/5_2_2.php
    http://www.debian.org/security/2007/dsa-1282
    http://www.debian.org/security/2007/dsa-1283
    http://www.novell.com/linux/security/advisories/2007_32_php.html
    http://www.php-security.org/MOPB/MOPB-22-2007.html
    http://www.securityfocus.com/bid/22968
    http://www.securityfocus.com/bid/25159
    http://www.ubuntu.com/usn/usn-455-1
    http://www.vupen.com/english/advisories/2007/0960
    http://www.vupen.com/english/advisories/2007/2732

    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