How severe is CVE-2001-1471?

CVE-2001-1471 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2001-1471 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-2001-1471?

CVE-2001-1471 affects Phpbb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2001-1471?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2001-1471 published?

CVE-2001-1471 was published on 2001-07-31 and last updated on 2026-06-16.

CVE-2001-1471

CVE-2001-1471 is a high-severity vulnerability in Phpbb with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-665.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 4.6
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-665
Affected product: Phpbb
Published: 2001-07-31
Last modified: 2026-06-16

Description

prefs.php in phpBB 1.4.0 and earlier allows remote authenticated users to execute arbitrary PHP code via an invalid language value, which prevents the variables (1) $l_statsblock in prefs.php or (2) $l_privnotify in auth.php from being properly initialized, which can be modified by the user and later used in an eval statement.

Frequently asked questions

What is CVE-2001-1471?: prefs.php in phpBB 1.4.0 and earlier allows remote authenticated users to execute arbitrary PHP code via an invalid language value, which prevents the variables (1) $l_statsblock in prefs.php or (2) $l_privnotify in auth.php from being properly initialized, which can be modified by the user and later used in an eval statement.
How severe is CVE-2001-1471?: CVE-2001-1471 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2001-1471 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-2001-1471?: CVE-2001-1471 affects Phpbb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2001-1471?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2001-1471 published?: CVE-2001-1471 was published on 2001-07-31 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:phpbb:phpbb:*:*:*:*:*:*:*:*

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