How severe is CVE-2011-1129?

CVE-2011-1129 has a CVSS 2.0 base score of 3.5, rated low severity.

Is CVE-2011-1129 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-1129?

CVE-2011-1129 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-2011-1129?

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

When was CVE-2011-1129 published?

CVE-2011-1129 was published on 2011-06-21 and last updated on 2026-06-16.

CVE-2011-1129

CVE-2011-1129 is a low-severity vulnerability in Simplemachines Smf with a CVSS 2.0 base score of 3.5. 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-79.

Key facts

Severity: Low (CVSS 2.0 base score 3.5)
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Simplemachines Smf
Published: 2011-06-21
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in the EditNews function in ManageNews.php in Simple Machines Forum (SMF) before 1.1.13, and 2.x before 2.0 RC5, might allow remote authenticated users to inject arbitrary web script or HTML via a save_items action.

Frequently asked questions

What is CVE-2011-1129?: Cross-site scripting (XSS) vulnerability in the EditNews function in ManageNews.php in Simple Machines Forum (SMF) before 1.1.13, and 2.x before 2.0 RC5, might allow remote authenticated users to inject arbitrary web script or HTML via a save_items action.
How severe is CVE-2011-1129?: CVE-2011-1129 has a CVSS 2.0 base score of 3.5, rated low severity.
Is CVE-2011-1129 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-1129?: CVE-2011-1129 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-2011-1129?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-1129 published?: CVE-2011-1129 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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