How severe is CVE-2009-2852?

CVE-2009-2852 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2009-2852 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2852?

CVE-2009-2852 affects Ryan.mcgeary Wp-syntax. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-2852?

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

When was CVE-2009-2852 published?

CVE-2009-2852 was published on 2009-08-18 and last updated on 2026-06-16.

CVE-2009-2852

CVE-2009-2852 is a medium-severity vulnerability in Ryan.mcgeary Wp-syntax with a CVSS 2.0 base score of 6.8. 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: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Ryan.mcgeary Wp-syntax
Published: 2009-08-18
Last modified: 2026-06-16

Description

WP-Syntax plugin 0.9.1 and earlier for Wordpress, with register_globals enabled, allows remote attackers to execute arbitrary PHP code via the test_filter[wp_head] array parameter to test/index.php, which is used in a call to the call_user_func_array function.

Frequently asked questions

What is CVE-2009-2852?: WP-Syntax plugin 0.9.1 and earlier for Wordpress, with register_globals enabled, allows remote attackers to execute arbitrary PHP code via the test_filter[wp_head] array parameter to test/index.php, which is used in a call to the call_user_func_array function.
How severe is CVE-2009-2852?: CVE-2009-2852 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2009-2852 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2852?: CVE-2009-2852 affects Ryan.mcgeary Wp-syntax. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-2852?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-2852 published?: CVE-2009-2852 was published on 2009-08-18 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:ryan.mcgeary:wp-syntax:*:*:*:*:*:*:*:*

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

64.202.190.35 (ipv4-addr)
103.253.245.96 (ipv4-addr)
213.199.35.105 (ipv4-addr)
47.251.12.114 (ipv4-addr)
45.56.218.235 (ipv4-addr)