How severe is CVE-2023-3432?

CVE-2023-3432 has a CVSS 3.x base score of 10.0, 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 none.

Is CVE-2023-3432 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-3432?

CVE-2023-3432 primarily affects Plantuml. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-3432?

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-2023-3432 published?

CVE-2023-3432 was published on 2023-06-27 and last updated on 2026-06-17.

CVE-2023-3432

CVE-2023-3432 is a critical-severity vulnerability in Plantuml with a CVSS 3.x base score of 10.0. 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-918.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Plantuml
Published: 2023-06-27
Last modified: 2026-06-17

Description

Server-Side Request Forgery (SSRF) in GitHub repository plantuml/plantuml prior to 1.2023.9.

Frequently asked questions

What is CVE-2023-3432?: Server-Side Request Forgery (SSRF) in GitHub repository plantuml/plantuml prior to 1.2023.9.
How severe is CVE-2023-3432?: CVE-2023-3432 has a CVSS 3.x base score of 10.0, 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 none.
Is CVE-2023-3432 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-3432?: CVE-2023-3432 primarily affects Plantuml. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-3432?: 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-2023-3432 published?: CVE-2023-3432 was published on 2023-06-27 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:plantuml:plantuml:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*

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CVE-2022-1379 — Critical (CVSS 9.1): URL Restriction Bypass in GitHub repository plantuml/plantuml prior to V1.2022.5. An attacker can abuse this to bypass…
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CVE-2023-3431 — Medium (CVSS 5.3): Improper Access Control in GitHub repository plantuml/plantuml prior to 1.2023.9.

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