How severe is CVE-2023-38836?

CVE-2023-38836 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-38836 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 73% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-38836?

CVE-2023-38836 affects Boidcms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-38836?

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-2023-38836 published?

CVE-2023-38836 was published on 2023-08-21 and last updated on 2026-07-05.

CVE-2023-38836

CVE-2023-38836 is a high-severity vulnerability in Boidcms with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 73% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 73% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Boidcms
Published: 2023-08-21
Last modified: 2026-07-05

Description

File Upload vulnerability in BoidCMS v.2.0.0 allows a remote attacker to execute arbitrary code by adding a GIF header to bypass MIME type checks.

Frequently asked questions

What is CVE-2023-38836?: File Upload vulnerability in BoidCMS v.2.0.0 allows a remote attacker to execute arbitrary code by adding a GIF header to bypass MIME type checks.
How severe is CVE-2023-38836?: CVE-2023-38836 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-38836 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 73% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-38836?: CVE-2023-38836 affects Boidcms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-38836?: 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-2023-38836 published?: CVE-2023-38836 was published on 2023-08-21 and last updated on 2026-07-05.

References

Affected products (1)

cpe:2.3:a:boidcms:boidcms:2.0.0:*:*:*:*:*:*:*

More vulnerabilities in Boidcms

CVE-2026-39387 — High (CVSS 7.2): BoidCMS is an open-source, PHP-based flat-file CMS for building simple websites and blogs, using JSON as its database.…
CVE-2024-32343 — Medium (CVSS 6.1): A cross-site scripting (XSS) vulnerability in the Create Page of Boid CMS v2.1.0 allows attackers to execute arbitrary…
CVE-2024-32342 — Medium (CVSS 6.1): A cross-site scripting (XSS) vulnerability in the Create Page of Boid CMS v2.1.0 allows attackers to execute arbitrary…
CVE-2024-53255 — Medium (CVSS 5.4): BoidCMS is a free and open-source flat file CMS for building simple websites and blogs, developed using PHP and uses…
CVE-2023-48824 — Medium (CVSS 5.4): BoidCMS 2.0.1 is vulnerable to Multiple Stored Cross-Site Scripting (XSS) issues via the title, subtitle, footer, or…

All CVEs affecting Boidcms →

Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities

CVE-2026-48283 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-48276 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-57700 — Critical (CVSS 10.0): Unrestricted Upload of File with Dangerous Type vulnerability in Daan.Dev OMGF Pro allows Using Malicious Files. This…
CVE-2025-69129 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in WordPress & WooCommerce Scraper Plugin, Import Data from Any Site <= 1.0.7…
CVE-2026-40772 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in GeekyBot <= 1.2.2 versions.
CVE-2026-40412 — Critical (CVSS 10.0): Unrestricted upload of file with dangerous type in Azure Orbital Spatio allows an unauthorized attacker to execute code…

Browse all CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities →