How severe is CVE-2011-1131?

CVE-2011-1131 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2011-1131 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-2011-1131?

CVE-2011-1131 primarily affects Simplemachines Smf. In total, 57 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-1131?

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

When was CVE-2011-1131 published?

CVE-2011-1131 was published on 2011-06-21 and last updated on 2026-06-16.

CVE-2011-1131

CVE-2011-1131 is a medium-severity vulnerability in Simplemachines Smf 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: Simplemachines Smf
Published: 2011-06-21
Last modified: 2026-06-16

Description

The PlushSearch2 function in Search.php in Simple Machines Forum (SMF) before 1.1.13, and 2.x before 2.0 RC5, uses certain cached data in a situation where a temporary table has been created, even though this cached data is intended only for situations where a temporary table has not been created, which might allow remote attackers to obtain sensitive information via a search.

Frequently asked questions

What is CVE-2011-1131?: The PlushSearch2 function in Search.php in Simple Machines Forum (SMF) before 1.1.13, and 2.x before 2.0 RC5, uses certain cached data in a situation where a temporary table has been created, even though this cached data is intended only for situations where a temporary table has not been created, which might allow remote attackers to obtain sensitive information via a search.
How severe is CVE-2011-1131?: CVE-2011-1131 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-1131 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-2011-1131?: CVE-2011-1131 primarily affects Simplemachines Smf. In total, 57 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-1131?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-1131 published?: CVE-2011-1131 was published on 2011-06-21 and last updated on 2026-06-16.

References

Affected products (57)

cpe:2.3:a:simplemachines:smf:*:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0:beta4:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0:beta4.1:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0:beta5:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0:beta6:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0:rc1:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0:rc2:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.6:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.7:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.8:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.9:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.10:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.12:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.13:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.14:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.15:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.16:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.17:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.18:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.19:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.20:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.0.21:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.1:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.1:beta1:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.1:beta2:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.1:beta3:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.1:beta4:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.1:rc1:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.1:rc2:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.1:rc3:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:simplemachines:smf:1.1.4:*:*:*:*:*:*:*

More vulnerabilities in Simplemachines Smf

CVE-2011-1127 — Critical (CVSS 10.0): SSI.php in Simple Machines Forum (SMF) before 1.1.13, and 2.x before 2.0 RC5, does not properly restrict guest access,…
CVE-2011-3615 — High (CVSS 7.5): Multiple SQL injection vulnerabilities in Simple Machines Forum (SMF) before 1.1.15 and 2.x before 2.0.1 allow remote…
CVE-2011-1130 — High (CVSS 7.5): Simple Machines Forum (SMF) before 1.1.13, and 2.x before 2.0 RC5, does not properly validate the start parameter,…
CVE-2011-1128 — High (CVSS 7.5): The loadUserSettings function in Load.php in Simple Machines Forum (SMF) before 1.1.13, and 2.x before 2.0 RC5, does…
CVE-2008-6971 — High (CVSS 7.5): The password reset functionality in Simple Machines Forum (SMF) 1.0.x before 1.0.14, 1.1.x before 1.1.6, and 2.0 before…
CVE-2011-4173 — Medium (CVSS 6.8): Cross-site request forgery (CSRF) vulnerability in Simple Machines Forum (SMF) 2.x before 2.0.1 allows remote attackers…

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