How severe is CVE-2005-4357?

CVE-2005-4357 has a CVSS 2.0 base score of 2.6, rated low severity.

Is CVE-2005-4357 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-4357?

CVE-2005-4357 affects Phpbb Group Phpbb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2005-4357?

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

When was CVE-2005-4357 published?

CVE-2005-4357 was published on 2005-12-20 and last updated on 2026-06-16.

CVE-2005-4357

CVE-2005-4357 is a low-severity vulnerability in Phpbb Group Phpbb with a CVSS 2.0 base score of 2.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Low (CVSS 2.0 base score 2.6)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Phpbb Group Phpbb
Published: 2005-12-20
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in phpBB 2.0.18, when "Allowed HTML tags" is enabled, allows remote attackers to inject arbitrary Javascript via a permitted HTML tag with " (quote) characters and active attributes such as onmouseover.

Frequently asked questions

What is CVE-2005-4357?: Cross-site scripting (XSS) vulnerability in phpBB 2.0.18, when "Allowed HTML tags" is enabled, allows remote attackers to inject arbitrary Javascript via a permitted HTML tag with " (quote) characters and active attributes such as onmouseover.
How severe is CVE-2005-4357?: CVE-2005-4357 has a CVSS 2.0 base score of 2.6, rated low severity.
Is CVE-2005-4357 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-4357?: CVE-2005-4357 affects Phpbb Group Phpbb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2005-4357?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2005-4357 published?: CVE-2005-4357 was published on 2005-12-20 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:phpbb_group:phpbb:2.0.18:*:*:*:*:*:*:*

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