CVE-2005-4712: CRLF injection vulnerability in process_signup.php in PHP Handicapper allows remote attackers to inject arbitr

Routine

MEDIUM 5.0MITIGATE

CVE-2005-4712 is a medium-severity flaw (CVSS 5.0) affecting php handicapper. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

CRLF injection vulnerability in process_signup.php in PHP Handicapper allows remote attackers to inject arbitrary HTTP headers via CRLF sequences in the login parameter. NOTE: the vendor has disputed CVE-2005-3497, and it is possible that the dispute was intended to include this issue as well.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Published	2005-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: php handicapper

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

Am I affected?

Timeline

2005-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:19 UTCUpdated Record last modified

php handicapper php handicapper MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy php-handicapper || rpm -q php-handicapper || php-handicapper --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

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-2005-4712?

php handicapper: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2005-4712 being exploited?

CVE-2005-4712 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-2005-4712 affect?

CVE-2005-4712 affects php handicapper. Severity is medium (CVSS 5.0). CRLF injection vulnerability in process_signup.php in PHP Handicapper allows remote attackers to inject arbitrary HTTP headers via CRLF sequences in the login parameter. NOTE: the vendor has disputed CVE-2005-3497, and it is possible that

How urgent is CVE-2005-4712?

Priority 39/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2005-3497 HIGH 7.5 MITIGATE SQL injection vulnerability in process_signup.php in PHP Handicapper allows remote attackers to execute arbitr
CVE-2005-3496 MEDIUM 4.3 MITIGATE Cross-site scripting (XSS) vulnerability in PHP Handicapper allows remote attackers to inject arbitrary web sc

References

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