How severe is CVE-2007-6398?

CVE-2007-6398 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2007-6398 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-6398?

CVE-2007-6398 affects Flat Php Board. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2007-6398?

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

When was CVE-2007-6398 published?

CVE-2007-6398 was published on 2007-12-17 and last updated on 2026-06-16.

CVE-2007-6398

CVE-2007-6398 is a medium-severity vulnerability in Flat Php Board 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-287.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Flat Php Board
Published: 2007-12-17
Last modified: 2026-06-16

Description

Flat PHP Board 1.2 and earlier allows remote attackers to bypass authentication and obtain limited access to an arbitrary user account via the fpb_username cookie.

Frequently asked questions

What is CVE-2007-6398?: Flat PHP Board 1.2 and earlier allows remote attackers to bypass authentication and obtain limited access to an arbitrary user account via the fpb_username cookie.
How severe is CVE-2007-6398?: CVE-2007-6398 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2007-6398 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-6398?: CVE-2007-6398 affects Flat Php Board. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-6398?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-6398 published?: CVE-2007-6398 was published on 2007-12-17 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:flat_php:board:*:*:*:*:*:*:*:*

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