CVE-2006-0894: Multiple cross-site scripting (XSS) vulnerabilities in NOCC Webmail 1.0 allow remote attackers to inject arbit

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MEDIUM 4.3DOWNGRADE

CVE-2006-0894 is a medium-severity flaw (CVSS 4.3) affecting nocc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site scripting (XSS) vulnerabilities in NOCC Webmail 1.0 allow remote attackers to inject arbitrary web script or HTML via (1) the html_error_occurred parameter in error.php, (2) html_filter_select parameter in filter_prefs.php, (3) html_no_mail parameter in no_mail.php, the (4) page_line, (5) prev, and (6) next parameters in html_bottom_table.php, and the (7) _SESSION['nocc_theme'] parameter in footer.php.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	2.7% (top 14%)
CISA exploited list	No
Published	2006-02-25
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: nocc

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

Am I affected?

Timeline

2006-02-25 11:02 UTCPublished CVE record published
2026-06-16 22:21 UTCUpdated Record last modified

nocc nocc DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy nocc || rpm -q nocc || nocc --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison nocc sudo apt install nocc=<VERSION_BEFORE_1.0> sudo apt-mark hold nocc

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list nocc sudo dnf downgrade nocc-<VERSION_BEFORE_1.0> sudo dnf versionlock add nocc

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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: NOCC 1.0 - 'error.php?html_error_occurred' Cross-Site Scripting
Exploit-DB: NOCC 1.0 - 'filter_prefs.php?html_filter_select' Cross-Site Scripting
Exploit-DB: NOCC 1.0 - 'html_bottom_table.php' Multiple Cross-Site Scripting Vulnerabilities
Exploit-DB: NOCC 1.0 - 'no_mail.php?html_no_mail' Cross-Site Scripting

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-2006-0894?

nocc: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-0894 being exploited?

CVE-2006-0894 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-2006-0894 affect?

CVE-2006-0894 affects nocc. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in NOCC Webmail 1.0 allow remote attackers to inject arbitrary web script or HTML via (1) the html_error_occurred parameter in error.php, (2) html_filter_select parameter in filter_prefs.p

How urgent is CVE-2006-0894?

Priority 42/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2006-0895 MEDIUM 5.0 DOWNGRADE NOCC Webmail 1.0 allows remote attackers to obtain the installation path via a direct request to html/header.p
CVE-2006-0893 MEDIUM 5.0 DOWNGRADE NOCC Webmail 1.0 allows remote attackers to obtain sensitive information via a direct request to (1) the profi
CVE-2006-0892 HIGH 7.5 DOWNGRADE NOCC Webmail 1.0 stores e-mail attachments in temporary files with predictable filenames, which makes it easie
CVE-2006-0891 MEDIUM 5.0 DOWNGRADE Multiple directory traversal vulnerabilities in NOCC Webmail 1.0 allow remote attackers to include arbitrary f
CVE-2002-2343 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in NOCC 0.9 through 0.9.5 allows remote attackers to inject arbitrary

References

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