How severe is CVE-2018-16352?

CVE-2018-16352 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-16352 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-16352?

CVE-2018-16352 affects Weaselcms Project Weaselcms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-16352?

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

When was CVE-2018-16352 published?

CVE-2018-16352 was published on 2018-09-02 and last updated on 2026-06-17.

CVE-2018-16352

CVE-2018-16352 is a critical-severity vulnerability in Weaselcms Project Weaselcms with a CVSS 3.x base score of 9.8. 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Weaselcms Project Weaselcms
Published: 2018-09-02
Last modified: 2026-06-17

Description

There is a PHP code upload vulnerability in WeaselCMS 0.3.6 via index.php because code can be embedded at the end of a .png file when the image/png content type is used.

Frequently asked questions

What is CVE-2018-16352?: There is a PHP code upload vulnerability in WeaselCMS 0.3.6 via index.php because code can be embedded at the end of a .png file when the image/png content type is used.
How severe is CVE-2018-16352?: CVE-2018-16352 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-16352 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-16352?: CVE-2018-16352 affects Weaselcms Project Weaselcms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-16352?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-16352 published?: CVE-2018-16352 was published on 2018-09-02 and last updated on 2026-06-17.

References

https://github.com/alterebro/WeaselCMS/issues/8

Affected products (1)

cpe:2.3:a:weaselcms_project:weaselcms:0.3.6:*:*:*:*:*:*:*

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