CVE-2023-3432 — Server-Side Request Forgery (SSRF) in GitHub repository plantuml/plantuml prior

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

01What is this vulnerability?

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

02Affected products

Vendor	Product	Versions
plantuml	plantuml/plantuml	unspecified

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-06-27T14:30:23.442Z
• Last modified: 2025-02-13T16:55:27.498Z

09References

• huntr.dev — https://huntr.dev/bounties/8ac3316f-431c-468d-87e4-3dafff2ecf51
• github.com — https://github.com/plantuml/plantuml/commit/b32500bb61ae617bb312496d6d832e4be819…
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/[email protected]…