Critical severity9.8NVD Advisory· Published May 7, 2010· Updated Apr 29, 2026

CVE-2010-1866

Description

The dechunk filter in PHP 5.3 through 5.3.2, when decoding an HTTP chunked encoding stream, allows context-dependent attackers to cause a denial of service (crash) and possibly trigger memory corruption via a negative chunk size, which bypasses a signed comparison, related to an integer overflow in the chunk size decoder.

Affected products

PHP/PHP
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
Range: >=5.3.0,<=5.3.2
OpenSUSE/openSUSE3 versions
cpe:2.3:o:opensuse:opensuse:11.1:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:opensuse:opensuse:11.1:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:opensuse:11.2:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:opensuse:11.3:*:*:*:*:*:*:*
SUSE S.A./Linux Enterprise3 versions
cpe:2.3:o:suse:linux_enterprise:10.0:sp3:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:suse:linux_enterprise:10.0:sp3:*:*:*:*:*:*
- cpe:2.3:o:suse:linux_enterprise:11.0:-:*:*:*:*:*:*
- cpe:2.3:o:suse:linux_enterprise:11.0:sp1:*:*:*:*:*:*

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

php-security.org/2010/05/02/mops-2010-003-php-dechunk-filter-signed-comparison-vulnerability/index.htmlnvdBroken LinkExploit
lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.htmlnvdMailing List

News mentions

No linked articles in our index yet.

cvss	0.637
epss	0.001
exploit	0.030
kev	0.000
patch	0.000
ransomware	0.000