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CVE-2012-5526

21
FAUCET Score

CVE-2012-5526 describes a header injection vulnerability in the CGI.pm module prior to version 3.63 for Perl, impacting applications utilizing this module. The vulnerability, rated with a CVSS score of 5.0 (medium), allows remote attackers to inject arbitrary headers into responses due to improper newline escaping in Set-Cookie or P3P headers. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.62CPE matchmatch criteria
cpe:2.3:a:andy_armstrong:cgi.pm:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.26%
Probability of exploitation in next 30 days
EPSS Percentile
87.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0326 is in the 82nd percentile among its peer group of 23,690 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: perl-4:5.8.8-40.el5_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: perl-4:5.10.1-130.el6_4
View patch

Vendor Advisories (1)

redhatCVE-2012-5526Moderate

perl-CGI: Newline injection due to improper CRLF escaping in Set-Cookie and P3P headers

Nov 12, 2012

References

cpansearch.perl.org / src/MARKSTOS/CGI.pm-3.63/Changes
kb.juniper.net / InfoCenter/index
kb.juniper.net / InfoCenter/index
rhn.redhat.com / errata/RHSA-2013-0685.html
secunia.com / advisories/51457
secunia.com / advisories/55314
exchange.xforce.ibmcloud.com / vulnerabilities/80098
github.com / markstos/CGI.pm/pull/23
debian.org / security/2012/dsa-2586
openwall.com / lists/oss-security/2012/11/15/6
oracle.com / technetwork/topics/security/ovmbulletinjul2016-3090546.html
securityfocus.com / bid/56562
securitytracker.com / id
ubuntu.com / usn/USN-1643-1