CVE-2010-4411: Unspecified vulnerability in CGI.pm 3.50 and earlier allows remote attackers to inject arbitrary HTTP headers

Q: How do I fix CVE-2010-4411?

cgi.pm: upgrade to newer than 3.50. Exact commands for each OS are on this page.

Q: Is CVE-2010-4411 being exploited?

CVE-2010-4411 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2010-4411 affect?

CVE-2010-4411 affects cgi.pm. Severity is medium (CVSS 4.3). Unspecified vulnerability in CGI.pm 3.50 and earlier allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via unknown vectors. NOTE: this issue exists because of an incomplete fix for CVE-201

Q: How urgent is CVE-2010-4411?

Priority 36/100. No elevated risk signals yet.

Routine

MEDIUM 4.3UPGRADE

CVE-2010-4411 is a medium-severity flaw (CVSS 4.3) affecting cgi.pm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unspecified vulnerability in CGI.pm 3.50 and earlier allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via unknown vectors. NOTE: this issue exists because of an incomplete fix for CVE-2010-2761.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	2.6% (top 15%)
CISA exploited list	No
Published	2010-12-06
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: andy armstrong

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2010-12-06 20:13 UTCPublished CVE record published
2026-06-16 23:24 UTCUpdated Record last modified

andy armstrong cgi.pm UPGRADE

Affected: <= 3.50 · 1.4 · 1.42 · 1.43 · 1.44 · 1.45 · 1.50 · 1.51

Fixed in: newer than 3.50

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy cgi.pm || rpm -q cgi.pm || cgi.pm --version

2. UPGRADE to newer than 3.50 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade cgi.pm

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cgi.pm

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2010-4411?

cgi.pm: upgrade to newer than 3.50. Exact commands for each OS are on this page.

Is CVE-2010-4411 being exploited?

CVE-2010-4411 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2010-4411 affect?

CVE-2010-4411 affects cgi.pm. Severity is medium (CVSS 4.3). Unspecified vulnerability in CGI.pm 3.50 and earlier allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via unknown vectors. NOTE: this issue exists because of an incomplete fix for CVE-201

How urgent is CVE-2010-4411?

Priority 36/100. No elevated risk signals yet.

Related CVEs

CVE-2012-5526 MEDIUM 5.0 UPGRADE CGI.pm module before 3.63 for Perl does not properly escape newlines in (1) Set-Cookie or (2) P3P headers, whi
CVE-2010-4410 MEDIUM 4.3 UPGRADE UPGRADE CRLF injection vulnerability in the header function in (1) CGI.pm before 3.50 and (2) Simple.pm in CGI::Simple
CVE-2010-2761 MEDIUM 4.3 UPGRADE UPGRADE The multipart_init function in (1) CGI.pm before 3.50 and (2) Simple.pm in CGI::Simple 1.112 and earlier uses
CVE-2003-0615 MEDIUM 4.3 DOWNGRADE DOWNGRADE Cross-site scripting (XSS) vulnerability in start_form() of CGI.pm allows remote attackers to insert web scrip

References

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