CVE-2004-2512: CRLF injection vulnerability in calendar.php in DCP-Portal 5.3.2 and earlier allows remote attackers to conduc

Q: How do I fix CVE-2004-2512?

dcp-portal: upgrade to newer than 5.3.2. Exact commands for each OS are on this page.

Q: Is CVE-2004-2512 being exploited?

CVE-2004-2512 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-2004-2512 affect?

CVE-2004-2512 affects dcp-portal. Severity is medium (CVSS 4.3). CRLF injection vulnerability in calendar.php in DCP-Portal 5.3.2 and earlier allows remote attackers to conduct HTTP response splitting attacks to spoof web content and poison web caches via CRLF ("%0d%0a") sequences in the PHPSESSID parame

Q: How urgent is CVE-2004-2512?

Priority 43/100. EPSS top 8%: very likely to be exploited; Public exploit reference

This month

MEDIUM 4.3UPGRADE

CVE-2004-2512 is a medium-severity flaw (CVSS 4.3) affecting dcp-portal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

CRLF injection vulnerability in calendar.php in DCP-Portal 5.3.2 and earlier allows remote attackers to conduct HTTP response splitting attacks to spoof web content and poison web caches via CRLF ("%0d%0a") sequences in the PHPSESSID parameter.

Why this priority

EPSS top 8%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	4.6% (top 8%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: codeworx technologies

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

Am I affected?

Timeline

2004-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:09 UTCUpdated Record last modified

codeworx technologies dcp-portal UPGRADE

Affected: <= 5.3.2 · 3.7 · 4.0 · 4.1 · 4.2 · 4.5.1 · 5.0.1 · 5.0.2

Fixed in: newer than 5.3.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy dcp-portal || rpm -q dcp-portal || dcp-portal --version

2. UPGRADE to newer than 5.3.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade dcp-portal

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dcp-portal

Note

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

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: DCP-Portal 3.7/4.x/5.x - 'calendar.php' HTTP Response Splitting

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-2004-2512?

dcp-portal: upgrade to newer than 5.3.2. Exact commands for each OS are on this page.

Is CVE-2004-2512 being exploited?

CVE-2004-2512 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-2004-2512 affect?

CVE-2004-2512 affects dcp-portal. Severity is medium (CVSS 4.3). CRLF injection vulnerability in calendar.php in DCP-Portal 5.3.2 and earlier allows remote attackers to conduct HTTP response splitting attacks to spoof web content and poison web caches via CRLF ("%0d%0a") sequences in the PHPSESSID parame

How urgent is CVE-2004-2512?

Priority 43/100. EPSS top 8%: very likely to be exploited; Public exploit reference

Software pages

PHP vulnerabilities

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References

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