How severe is CVE-2001-1521?

CVE-2001-1521 has a CVSS 2.0 base score of 2.6, rated low severity.

Is CVE-2001-1521 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-1521?

CVE-2001-1521 primarily affects Postnuke Software Foundation Postnuke. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2001-1521?

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

When was CVE-2001-1521 published?

CVE-2001-1521 was published on 2001-12-31 and last updated on 2026-06-16.

CVE-2001-1521

CVE-2001-1521 is a low-severity vulnerability in Postnuke Software Foundation Postnuke with a CVSS 2.0 base score of 2.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Low (CVSS 2.0 base score 2.6)
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Postnuke Software Foundation Postnuke
Published: 2001-12-31
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in user.php in PostNuke 0.64 allows remote attackers to inject arbitrary web script or HTML via the uname parameter.

Frequently asked questions

What is CVE-2001-1521?: Cross-site scripting (XSS) vulnerability in user.php in PostNuke 0.64 allows remote attackers to inject arbitrary web script or HTML via the uname parameter.
How severe is CVE-2001-1521?: CVE-2001-1521 has a CVSS 2.0 base score of 2.6, rated low severity.
Is CVE-2001-1521 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-1521?: CVE-2001-1521 primarily affects Postnuke Software Foundation Postnuke. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-1521?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2001-1521 published?: CVE-2001-1521 was published on 2001-12-31 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:postnuke_software_foundation:postnuke:0.62:*:*:*:*:*:*:*
cpe:2.3:a:postnuke_software_foundation:postnuke:0.63:*:*:*:*:*:*:*
cpe:2.3:a:postnuke_software_foundation:postnuke:0.64:*:*:*:*:*:*:*