How severe is CVE-2023-3393?

CVE-2023-3393 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-3393 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-3393?

CVE-2023-3393 affects Fossbilling. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-3393?

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-2023-3393 published?

CVE-2023-3393 was published on 2023-06-23 and last updated on 2026-06-17.

CVE-2023-3393

CVE-2023-3393 is a high-severity vulnerability in Fossbilling with a CVSS 3.x base score of 7.2. 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-94.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Fossbilling
Published: 2023-06-23
Last modified: 2026-06-17

Description

Code Injection in GitHub repository fossbilling/fossbilling prior to 0.5.1.

Frequently asked questions

What is CVE-2023-3393?: Code Injection in GitHub repository fossbilling/fossbilling prior to 0.5.1.
How severe is CVE-2023-3393?: CVE-2023-3393 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-3393 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-3393?: CVE-2023-3393 affects Fossbilling. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-3393?: 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-2023-3393 published?: CVE-2023-3393 was published on 2023-06-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fossbilling:fossbilling:*:*:*:*:*:*:*:*

More vulnerabilities in Fossbilling

CVE-2023-4005 — Critical (CVSS 9.8): Insufficient Session Expiration in GitHub repository fossbilling/fossbilling prior to 0.5.5.
CVE-2023-3490 — Critical (CVSS 9.8): SQL Injection in GitHub repository fossbilling/fossbilling prior to 0.5.3.
CVE-2023-3491 — High (CVSS 8.8): Unrestricted Upload of File with Dangerous Type in GitHub repository fossbilling/fossbilling prior to 0.5.3.
CVE-2023-3493 — High (CVSS 8.0): Improper Neutralization of Formula Elements in a CSV File in GitHub repository fossbilling/fossbilling prior to 0.5.3.
CVE-2023-3230 — High (CVSS 7.5): Missing Authorization in GitHub repository fossbilling/fossbilling prior to 0.5.0.
CVE-2023-3229 — Medium (CVSS 6.5): Business Logic Errors in GitHub repository fossbilling/fossbilling prior to 0.5.0.

All CVEs affecting Fossbilling →

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CVE-2026-48836 — Critical (CVSS 10.0): Unauthenticated Remote Code Execution (RCE) in Easy Invoice <= 2.1.19 versions.

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