How severe is CVE-2007-0399?

CVE-2007-0399 has a CVSS 2.0 base score of 6.0, rated medium severity.

Is CVE-2007-0399 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-0399?

CVE-2007-0399 affects Simple Machines Simple Machines Forum. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-0399?

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

When was CVE-2007-0399 published?

CVE-2007-0399 was published on 2007-01-22 and last updated on 2026-06-16.

CVE-2007-0399

CVE-2007-0399 is a medium-severity vulnerability in Simple Machines Simple Machines Forum with a CVSS 2.0 base score of 6.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 6.0)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Simple Machines Simple Machines Forum
Published: 2007-01-22
Last modified: 2026-06-16

Description

Multiple cross-site scripting (XSS) vulnerabilities in index.php in Simple Machines Forum (SMF) 1.1 RC3 allow remote authenticated users to inject arbitrary web script or HTML via the (1) recipient or (2) BCC field when selecting send in a pm action.

Frequently asked questions

What is CVE-2007-0399?: Multiple cross-site scripting (XSS) vulnerabilities in index.php in Simple Machines Forum (SMF) 1.1 RC3 allow remote authenticated users to inject arbitrary web script or HTML via the (1) recipient or (2) BCC field when selecting send in a pm action.
How severe is CVE-2007-0399?: CVE-2007-0399 has a CVSS 2.0 base score of 6.0, rated medium severity.
Is CVE-2007-0399 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-0399?: CVE-2007-0399 affects Simple Machines Simple Machines Forum. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-0399?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-0399 published?: CVE-2007-0399 was published on 2007-01-22 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:simple_machines:simple_machines_forum:1.1_rc3:*:*:*:*:*:*:*

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