How severe is CVE-2008-1066?

CVE-2008-1066 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2008-1066 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-1066?

CVE-2008-1066 affects Smarty. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-1066?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2008-1066 published?

CVE-2008-1066 was published on 2008-02-28 and last updated on 2026-06-16.

CVE-2008-1066

CVE-2008-1066 is a high-severity vulnerability in Smarty with a CVSS 2.0 base score of 7.5. 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-20.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Smarty
Published: 2008-02-28
Last modified: 2026-06-16

Description

The modifier.regex_replace.php plugin in Smarty before 2.6.19, as used by Serendipity (S9Y) and other products, allows attackers to call arbitrary PHP functions via templates, related to a '\0' character in a search string.

Frequently asked questions

What is CVE-2008-1066?: The modifier.regex_replace.php plugin in Smarty before 2.6.19, as used by Serendipity (S9Y) and other products, allows attackers to call arbitrary PHP functions via templates, related to a '\0' character in a search string.
How severe is CVE-2008-1066?: CVE-2008-1066 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2008-1066 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-1066?: CVE-2008-1066 affects Smarty. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-1066?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2008-1066 published?: CVE-2008-1066 was published on 2008-02-28 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:smarty:smarty:*:*:*:*:*:*:*:*

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