How severe is CVE-2006-0891?

CVE-2006-0891 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2006-0891 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-0891?

CVE-2006-0891 affects Nocc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2006-0891?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2006-0891 published?

CVE-2006-0891 was published on 2006-02-25 and last updated on 2026-06-16.

CVE-2006-0891

CVE-2006-0891 is a medium-severity vulnerability in Nocc with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Nocc
Published: 2006-02-25
Last modified: 2026-06-16

Description

Multiple directory traversal vulnerabilities in NOCC Webmail 1.0 allow remote attackers to include arbitrary files via .. (dot dot) sequences and a trailing NULL (%00) byte in (1) the _SESSION['nocc_theme'] parameter in (a) html/footer.php; and (2) the lang and (3) theme parameters and the (4) Accept-Language HTTP header field, when force_default_lang is disabled, in (b) index.php, as demonstrated by injecting PHP code into a profile and accessing it using the lang parameter in index.php.

Frequently asked questions

What is CVE-2006-0891?: Multiple directory traversal vulnerabilities in NOCC Webmail 1.0 allow remote attackers to include arbitrary files via .. (dot dot) sequences and a trailing NULL (%00) byte in (1) the _SESSION['nocc_theme'] parameter in (a) html/footer.php; and (2) the lang and (3) theme parameters and the (4) Accept-Language HTTP header field, when force_default_lang is disabled, in (b) index.php, as demonstrated by injecting PHP code into a profile and accessing it using the lang parameter in index.php.
How severe is CVE-2006-0891?: CVE-2006-0891 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2006-0891 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-0891?: CVE-2006-0891 affects Nocc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-0891?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-0891 published?: CVE-2006-0891 was published on 2006-02-25 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:nocc:nocc:1.0:*:*:*:*:*:*:*

More vulnerabilities in Nocc

CVE-2006-0892 — High (CVSS 7.5): NOCC Webmail 1.0 stores e-mail attachments in temporary files with predictable filenames, which makes it easier for…
CVE-2006-0893 — Medium (CVSS 5.0): NOCC Webmail 1.0 allows remote attackers to obtain sensitive information via a direct request to (1) the profiles…
CVE-2006-0895 — Medium (CVSS 5.0): NOCC Webmail 1.0 allows remote attackers to obtain the installation path via a direct request to html/header.php.
CVE-2006-0894 — Medium (CVSS 4.3): Multiple cross-site scripting (XSS) vulnerabilities in NOCC Webmail 1.0 allow remote attackers to inject arbitrary web…
CVE-2002-2343 — Medium (CVSS 4.3): Cross-site scripting (XSS) vulnerability in NOCC 0.9 through 0.9.5 allows remote attackers to inject arbitrary web…

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