How severe is CVE-2023-2453?

CVE-2023-2453 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-2023-2453 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-2453?

CVE-2023-2453 affects Php-fusion Phpfusion. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-2453?

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-2023-2453 published?

CVE-2023-2453 was published on 2023-09-05 and last updated on 2026-06-17.

CVE-2023-2453

CVE-2023-2453 is a high-severity vulnerability in Php-fusion Phpfusion with a CVSS 3.x base score of 8.8. 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-829.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-829
Affected product: Php-fusion Phpfusion
Published: 2023-09-05
Last modified: 2026-06-17

Description

There is insufficient sanitization of tainted file names that are directly concatenated with a path that is subsequently passed to a ‘require_once’ statement. This allows arbitrary files with the ‘.php’ extension for which the absolute path is known to be included and executed. There are no known means in PHPFusion through which an attacker can upload and target a ‘.php’ file payload.

Frequently asked questions

What is CVE-2023-2453?: There is insufficient sanitization of tainted file names that are directly concatenated with a path that is subsequently passed to a ‘require_once’ statement. This allows arbitrary files with the ‘.php’ extension for which the absolute path is known to be included and executed. There are no known means in PHPFusion through which an attacker can upload and target a ‘.php’ file payload.
How severe is CVE-2023-2453?: CVE-2023-2453 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-2023-2453 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-2453?: CVE-2023-2453 affects Php-fusion Phpfusion. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-2453?: 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-2023-2453 published?: CVE-2023-2453 was published on 2023-09-05 and last updated on 2026-06-17.

References

https://www.synopsys.com/blogs/software-security/cyrc-vulnerability-advisory-cve-2023-2453/

Affected products (1)

cpe:2.3:a:php-fusion:phpfusion:*:*:*:*:*:*:*:*

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