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CVE-2011-4718

Session fixation vulnerability in the Sessions subsystem in PHP before 5.5.2 allows remote...

6.8 MediumFix available

Session fixation vulnerability in the Sessions subsystem in PHP before 5.5.2 allows remote attackers to hijack web sessions by specifying a session ID.

Exploit likelihood

3.62%Up 2.4 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 6.8

Session fixation vulnerability in the Sessions subsystem in PHP before 5.5.2 allows remote attackers to hijack web sessions by specifying a session ID.

Record
CVE-2011-4718
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-264
Updated
2026-11-02
CVE List No score

Session fixation vulnerability in the Sessions subsystem in PHP before 5.5.2 allows remote attackers to hijack web sessions by specifying a session ID.

Record
CVE-2011-4718
Updated
2026-11-02
EUVDEUVD-2011-4636 No score

Session fixation vulnerability in the Sessions subsystem in PHP before 5.5.2 allows remote attackers to hijack web sessions by specifying a session ID.

Record
EUVD-2011-4636
Updated
2026-11-03
GitHub AdvisoriesGHSA-36c7-4qpg-3rf4 No score

Session fixation vulnerability in the Sessions subsystem in PHP before 5.5.2 allows remote...

Session fixation vulnerability in the Sessions subsystem in PHP before 5.5.2 allows remote attackers to hijack web sessions by specifying a session ID.

Record
GHSA-36c7-4qpg-3rf4
Updated
2026-11-02
OSVBELL-CVE-2011-4718 6.8

CVE-2011-4718 does not affect BellSoft software

Record
BELL-CVE-2011-4718
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Updated
2026-11-02
OSVCLSA-2020-1605798462 No score

Fix of 227 CVE

  • Fix bug #69720: Null pointer dereference in phar_get_fp_offset()
  • Fix bug #70728: Type Confusion Vulnerability in PHP_to_XMLRPC_worker()
  • Fix bug #70661: Use After Free Vulnerability in WDDX Packet Deserialization
  • Fix bug #70741: Session WDDX Packet Deserialization Type Confusion Vulnerability
  • Fix bug #71459: Integer overflow in iptcembed()
  • Fix bug #71039: exec functions ignore length but look for NULL termination
  • Fix bug #71354: Heap corruption in tar/zip/phar parser.
  • Fix bug #71391: NULL Pointer Dereference in phar_tar_setupmetadata()
  • Fix bug #71323: Output of stream_get_meta_data can be falsified by its input
  • Fix bug #71498: Out-of-Bound Read in phar_parse_zipfile()
  • Fix bug #71587: Use-After-Free / Double-Free in WDDX Deserialize
  • Fix bug #71860: Invalid memory write in phar on filename with \0 in name
  • Fix bug #71798: Integer Overflow in php_raw_url_encode
  • Fix bug #72837: integer overflow in bzdecompress caused heap corruption
  • Fix bug #72681: PHP Session Data Injection Vulnerability
  • Fix bug #72807: integer overflow in curl_escape caused heap corruption
  • Fix bug #72838: Integer overflow lead to heap corruption in sql_regcase
  • Fix bug #72697: select_colors write out-of-bounds
  • Fix bug #72730: imagegammacorrect allows arbitrary write access
  • Fix bug #72836: integer overflow in base64_decode caused heap corruption
  • Fix bug #72848: integer overflow in quoted_printable_encode caused heap corruption
  • Fix bug #72849: integer overflow in urlencode caused heap corruption
  • Fix bug #72850: integer overflow in php_uuencode caused heap corruption
  • Fix bug #72771: ftps:// wrapper is vulnerable to protocol downgrade attack
  • Fix bug #72749: wddx_deserialize allows illegal memory access
  • Fix bug #72750: wddx_deserialize null dereference
  • Fix bug #72790: wddx_deserialize null dereference with invalid xml
  • Fix bug #72799: wddx_deserialize null dereference in php_wddx_pop_element
  • Fix bug #73189: Memcpy negative size parameter php_resolve_path
  • Fix bug #73150: missing NULL check in dom_document_save_html
  • Fix bug #73284: heap overflow in php_ereg_replace function
  • Fix bug #73218: stack-buffer-overflow through "ResourceBundle" methods
  • Fix bug #73208: integer overflow in imap_8bit caused heap corruption
  • Fix bug #73082: string length overflow in mb_encode_* function
  • Fix bug #73174: heap overflow in php_pcre_replace_impl
  • Fix bug #73276: crash in openssl_random_pseudo_bytes function
  • Fix bug #73275: crash in openssl_encrypt function
  • Fix bug #73017: memory corruption in wordwrap function
  • Fix bug #73240: Write out of bounds at number_format
  • Fix bug #73073: CachingIterator null dereference when convert to string
  • Fix bug #73293: NULL pointer dereference in SimpleXMLElement::asXML()
  • Fix bug #73356: crash in bzcompress function
  • Fix bug #72696: imagefilltoborder stackoverflow on truecolor images
  • Fix bug #73418: Integer Overflow in "_php_imap_mail" leads Heap Overflow
  • Fix bug #73144: Use-after-free in ArrayObject Deserialization
  • Fix bug #73192: parse_url return wrong hostname
  • Fix bug #73331: NULL Pointer Dereference in WDDX Packet Deserialization with PDORow
  • Fix bug #73452: Segfault (Regression for #69152)
  • Fix bug #73631: Invalid read when wddx decodes empty boolean element
  • Fix bug #67587: Redirection loop on nginx with FPM
  • Fix bug #71465: PHAR doesn't know about litespeed
  • Fix bug #73737: FPE when parsing a tag format
  • Fix bug #73868: Fix DOS vulnerability in gdImageCreateFromGd2Ctx()
  • Fix bug #73869: Signed Integer Overflow gd_io.c
  • Fix bug #73773: Seg fault when loading hostile phar
  • Fix bug #70436: Use After Free Vulnerability in unserialize()
  • Fix bug #74603: PHP INI Parsing Stack Buffer Overflow Vulnerability
  • Fix bug #72535: arcfour encryption stream filter crashes php
  • Fix bug #72434: ZipArchive class Use After Free Vulnerability in PHP's GC algorithm and unseria
  • Fix bug #72455: Heap Overflow due to integer overflows
  • Fix bug #74782:…
Record
CLSA-2020-1605798462
Updated
2026-11-02
OSVopenSUSE-SU-2024:10290-1 No score

apache2-mod_php7-7.0.14-1.4 on GA media

These are all security issues fixed in the apache2-mod_php7-7.0.14-1.4 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10290-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10344-1 No score

apache2-mod_php5-5.6.28-1.1 on GA media

These are all security issues fixed in the apache2-mod_php5-5.6.28-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10344-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
php
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-bcmath
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-cli
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-common
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-dba
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-devel
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-embedded
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-enchant
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-fpm
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-gd
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
Show 19 moreShow less
Affected packages
PackageAffectedFixed
php-imap
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-intl
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-ldap
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-mbstring
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-mysql
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-odbc
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-pdo
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-pgsql
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-process
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-pspell
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-recode
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-snmp
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-soap
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-tidy
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-xml
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-xmlrpc
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php-zts
TuxCare:CentOS:6
before 5.3.3-51.el6.cloudlinux
5.3.3-51.el6.cloudlinux
php7
openSUSE:Tumbleweed
before 7.0.14-1.4
7.0.14-1.4
php5
openSUSE:Tumbleweed
before 5.6.28-1.1
5.6.28-1.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2011-4718 is a medium vulnerability (CVSS 6.8) in Php, published August 13, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.62%, the 89th percentile. Fixed in php 5.3.3-51.el6.cloudlinux.

References

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Left out here: the rest of 1 source description. The JSON record has them.

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