UpHeron
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Servers and applications

CVE-2011-1471

Integer signedness error in zip_stream.c in the Zip extension in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (CPU consumption) via a malformed archive file that triggers errors in zip_fread function calls.

Severity
Medium 4.3
Published
20 Mar 2011
Last changed
16 Jun 2026
Added to UpHeron
14 Oct 2026
Fixed in
5.2.11, 5.3.6
Exploit chance
13% in the next 30 daysHigher than 96% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-189
Attack
Over the network · No login needed
Attacker can
Slow it down
CVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:P
Sources
NVD

Affected software

SoftwareAffected versions
PHPServers and applications · cpe:a:php:php
  • Every version before 5.2.11
  • From 5.3.0 before 5.3.6

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2011-1471
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2011-1471