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Fencer Intel
medium 4.3

CVE-2011-2201 json

The Data::FormValidator module 4.66 and earlier for Perl, when untaint_all_constraints is enabled, does not properly preserve the taint att…

published 2011-09-14 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-2191

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.9%
EPSS 6.9% chance of exploitation in 30 days, percentile 94%
public exploits
1
Exploit-DB

Summary

The Data::FormValidator module 4.66 and earlier for Perl, when untaint_all_constraints is enabled, does not properly preserve the taint attribute of data, which might allow remote attackers to bypass the taint protection mechanism via form input.

Patch / fix

  • libdata-formvalidator-perl Debian 14, Debian 13, Debian 12 4.66-3

debian advisories DEBIAN-CVE-2011-2201

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-2201 updated cvss 2.6

perl-Data-FormValidator: Reports invalid field as valid when untaint_all_constraints used

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (EDB-35836)
  2. Published

Exploit prediction

6.90% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-35836 Perl Data::FormValidator 4.66 Module - 'results()' Security Bypass remote, 2011-06-08
  • lists.fedoraproject.org http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065416.html referenced PoC, tagged "exploit" by a source, unverified
  • openwall.com http://www.openwall.com/lists/oss-security/2011/06/12/3 referenced PoC, tagged "exploit" by a source, unverified
  • bugs.debian.org http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=629511 referenced PoC, tagged "exploit" by a source, unverified
  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=712694 referenced PoC, tagged "exploit" by a source, unverified
  • openwall.com http://www.openwall.com/lists/oss-security/2011/06/13/13 referenced PoC, tagged "exploit" by a source, unverified
  • securityfocus.com http://www.securityfocus.com/bid/48167 referenced PoC, tagged "exploit" by a source, unverified
  • rt.cpan.org https://rt.cpan.org/Public/Bug/Display.html?id=61792 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.