How severe is CVE-2021-34640?

CVE-2021-34640 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-34640 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-34640?

CVE-2021-34640 affects Securimage-wp-fixed Project Securimage-wp-fixed. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-34640?

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

When was CVE-2021-34640 published?

CVE-2021-34640 was published on 2021-08-11 and last updated on 2026-06-17.

CVE-2021-34640

CVE-2021-34640 is a medium-severity vulnerability in Securimage-wp-fixed Project Securimage-wp-fixed with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Securimage-wp-fixed Project Securimage-wp-fixed
Published: 2021-08-11
Last modified: 2026-06-17

Description

The Securimage-WP-Fixed WordPress plugin is vulnerable to Reflected Cross-Site Scripting due to the use of $_SERVER['PHP_SELF'] in the ~/securimage-wp.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 3.5.4.

Frequently asked questions

What is CVE-2021-34640?: The Securimage-WP-Fixed WordPress plugin is vulnerable to Reflected Cross-Site Scripting due to the use of $_SERVER['PHP_SELF'] in the ~/securimage-wp.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 3.5.4.
How severe is CVE-2021-34640?: CVE-2021-34640 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-34640 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-34640?: CVE-2021-34640 affects Securimage-wp-fixed Project Securimage-wp-fixed. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-34640?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-34640 published?: CVE-2021-34640 was published on 2021-08-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:securimage-wp-fixed_project:securimage-wp-fixed:*:*:*:*:*:wordpress:*:*

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