How severe is CVE-2011-3771?

CVE-2011-3771 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2011-3771 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-3771?

CVE-2011-3771 affects Gnu Phpbook. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-3771?

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

When was CVE-2011-3771 published?

CVE-2011-3771 was published on 2011-09-24 and last updated on 2026-06-16.

CVE-2011-3771

CVE-2011-3771 is a medium-severity vulnerability in Gnu Phpbook 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. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Gnu Phpbook
Published: 2011-09-24
Last modified: 2026-06-16

Description

phpBook 2.1.0 allows remote attackers to obtain sensitive information via a direct request to a .php file, which reveals the installation path in an error message, as demonstrated by doc/update_smilies_1.50-1.60.php and certain other files.

Frequently asked questions

What is CVE-2011-3771?: phpBook 2.1.0 allows remote attackers to obtain sensitive information via a direct request to a .php file, which reveals the installation path in an error message, as demonstrated by doc/update_smilies_1.50-1.60.php and certain other files.
How severe is CVE-2011-3771?: CVE-2011-3771 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-3771 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-3771?: CVE-2011-3771 affects Gnu Phpbook. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-3771?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-3771 published?: CVE-2011-3771 was published on 2011-09-24 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:gnu:phpbook:2.1.0:*:*:*:*:*:*:*

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