CVE-2011-4885
MEDIUM · CVSS 5.0EPSS 83.4%EU EUVD
PHP before 5.3.9 computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- Weakness (CWE)
- CWE-20
- EPSS score
- 83.4% (100th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2011-4802)
- Published
- December 30, 2011
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2011-4802 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
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
- php / php
References
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
- http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00013.html
- http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00016.html
- http://marc.info/?l=bugtraq&m=132871655717248&w=2
- http://marc.info/?l=bugtraq&m=133469208622507&w=2
- http://rhn.redhat.com/errata/RHSA-2012-0071.html
- http://secunia.com/advisories/47404
- http://secunia.com/advisories/48668
- http://support.apple.com/kb/HT5281
- http://svn.php.net/viewvc?view=revision&revision=321003
- http://svn.php.net/viewvc?view=revision&revision=321040
- http://www.debian.org/security/2012/dsa-2399
- http://www.exploit-db.com/exploits/18296
- http://www.exploit-db.com/exploits/18305
- http://www.kb.cert.org/vuls/id/903934(US Government Resource)
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:197
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
- http://www.nruns.com/_downloads/advisory28122011.pdf
- http://www.ocert.org/advisories/ocert-2011-003.html
- http://www.oracle.com/technetwork/topics/security/cpujul2012-392727.html
- http://www.redhat.com/support/errata/RHSA-2012-0019.html
- http://www.securityfocus.com/bid/51193
- http://www.securitytracker.com/id?1026473
- https://exchange.xforce.ibmcloud.com/vulnerabilities/72021
- https://github.com/FireFart/HashCollision-DOS-POC/blob/master/HashtablePOC.py
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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