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Vulnerability record · CVE-2011-2767 · published 26 August 2018

CVE-2011-2767: Apache mod perl code injection vulnerability

Apache · Mod Perl

mod_perl 2.0 through 2.0.10 allows attackers to execute arbitrary Perl code by placing it in a user-owned .htaccess file, because (contrary to the documentation) there is no configuration option that permits Perl code for the administrator's control of HTTP request processing without also permitting unprivileged users to run Perl code in the context of the user account that runs Apache HTTP Server processes.

9.8 CVSS 3.0 Critical EPSS 8.9% · top 4.9% CWE-94 · Code injection
9.8CVSS 3.0 base score, v2 10.0
8.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
24References
16 Jun 2026Last modified by NVD

Description

mod_perl 2.0 through 2.0.10 allows attackers to execute arbitrary Perl code by placing it in a user-owned .htaccess file, because (contrary to the documentation) there is no configuration option that permits Perl code for the administrator's control of HTTP request processing without also permitting unprivileged users to run Perl code in the context of the user account that runs Apache HTTP Server processes.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00063.html
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00065.html
http://www.securityfocus.com/bid/105195 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2018:2737 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2825 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2826 Third Party Advisory
https://bugs.debian.org/644169 Issue TrackingMailing ListThird Party Advisory
https://lists.apache.org/thread.html/c8ebe8aad147a3ad2e7b0e8b2da45263171ab5d0fc7f8c100feaa94d%40%3Cmodperl-cvs.perl.apac
https://lists.debian.org/debian-lts-announce/2018/09/msg00018.html Mailing ListThird Party Advisory
https://mail-archives.apache.org/mod_mbox/perl-modperl/201110.mbox/raw/%3C20111004084343.GA21290%40ktnx.net%3E Mailing ListThird Party Advisory
https://usn.ubuntu.com/3825-1/ Third Party Advisory
https://usn.ubuntu.com/3825-2/ Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00063.html
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00065.html
http://www.securityfocus.com/bid/105195 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2018:2737 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2825 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2826 Third Party Advisory
https://bugs.debian.org/644169 Issue TrackingMailing ListThird Party Advisory
https://lists.apache.org/thread.html/c8ebe8aad147a3ad2e7b0e8b2da45263171ab5d0fc7f8c100feaa94d%40%3Cmodperl-cvs.perl.apac
https://lists.debian.org/debian-lts-announce/2018/09/msg00018.html Mailing ListThird Party Advisory
https://mail-archives.apache.org/mod_mbox/perl-modperl/201110.mbox/raw/%3C20111004084343.GA21290%40ktnx.net%3E Mailing ListThird Party Advisory
https://usn.ubuntu.com/3825-1/ Third Party Advisory
https://usn.ubuntu.com/3825-2/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2011-2767), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.