Medium 5.0Published Nov 23, 2009

CVE-2009-4017PHP before 5.2.12 and 5.3.x before 5.3.1 does not restrict the number of temporary files created when handling a multipart/form-data POST request, which allows remote attackers to cause a denial of s…

Updated under an hour ago (Nov 2, 2026, 1:40 AM ET)

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It affects php and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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PHP before 5.2.12 and 5.3.x before 5.3.1 does not restrict the number of temporary files created when handling a multipart/form-data POST request, which allows remote attackers to cause a denial of service (resource exhaustion), and makes it easier for remote attackers to exploit local file inclusion vulnerabilities, via multiple requests, related to lack of support for the max_file_uploads directive.

CVSS: 5.0 MEDIUM (v2.0, NVD)AV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness (CWE): CWE-770
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

php php php:php	before 5.2.12; 5.3.0; 5.3.0; 5.3.0; 5.3.0; 5.3.0; 5.3.0; 5.3.0; and 2 more ranges	NVD
apple mac_os_x apple:mac_os_x	10.6.3	NVD
debian debian_linux debian:debian_linux	4.0; 5.0; 6.0	NVD

References

References

http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html	mailing-list
http://marc.info/?l=bugtraq&m=127680701405735&w=2	third-party-advisory
http://news.php.net/php.announce/79	mailing-list, release-notes
http://seclists.org/fulldisclosure/2009/Nov/228	mailing-list, third-party-advisory
http://secunia.com/advisories/37482	broken-link
http://secunia.com/advisories/37821	broken-link
http://secunia.com/advisories/40262	broken-link
http://secunia.com/advisories/41480	broken-link
http://secunia.com/advisories/41490	broken-link
http://support.apple.com/kb/HT4077	third-party-advisory
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.