How severe is CVE-2023-39776?

CVE-2023-39776 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-2023-39776 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39776?

CVE-2023-39776 affects Phpjabbers Ticket Support Script. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-39776?

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-2023-39776 published?

CVE-2023-39776 was published on 2023-08-10 and last updated on 2026-06-17.

CVE-2023-39776

CVE-2023-39776 is a critical-severity vulnerability in Phpjabbers Ticket Support Script 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)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Phpjabbers Ticket Support Script
Published: 2023-08-10
Last modified: 2026-06-17

Description

A File Upload vulnerability in PHPJabbers Ticket Support Script v3.2 allows attackers to execute arbitrary code via uploading a crafted file.

Frequently asked questions

What is CVE-2023-39776?: A File Upload vulnerability in PHPJabbers Ticket Support Script v3.2 allows attackers to execute arbitrary code via uploading a crafted file.
How severe is CVE-2023-39776?: CVE-2023-39776 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-2023-39776 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39776?: CVE-2023-39776 affects Phpjabbers Ticket Support Script. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-39776?: 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-2023-39776 published?: CVE-2023-39776 was published on 2023-08-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:phpjabbers:ticket_support_script:3.2:*:*:*:*:*:*:*

More vulnerabilities in Phpjabbers Ticket Support Script

CVE-2023-40766 — Critical (CVSS 9.8): User enumeration is found in in PHPJabbers Ticket Support Script v3.2. This issue occurs during password recovery,…
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Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities

CVE-2026-39770 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in Doctreat <= 1.7.0 versions.
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CVE-2026-102427 — Critical (CVSS 10.0): Joomla Extension - ordasoft.com - Unauthenticated Remote Code Execution in OrdaSoft Joomla CCK < 8.3.16 -…
CVE-2026-4357 — Critical (CVSS 10.0): The Embed HTML5 Game WordPress plugin through 1.3 does not properly restrict who can upload files via the plugin, as…
CVE-2026-84147 — Critical (CVSS 10.0): This vulnerability exists in the ERP system due to improper authentication controls and inadequate file type validation…
CVE-2026-81780 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in Hash Form <= 1.4.2 versions.

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