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CVE-2023-3431

18
FAUCET Score

CVE-2023-3431 is an improper access control vulnerability affecting PlantUML versions prior to 1.2023.9, impacting various Fedora Project and PlantUML distributions. Rated Medium severity (CVSS 5.3), it allows an unauthenticated attacker to achieve low confidentiality impact with low attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.2023.9CPE matchmatch criteria
cpe:2.3:a:plantuml:plantuml:*:*:*:*:*:*:*:*
39CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.87%
Probability of exploitation in next 30 days
EPSS Percentile
55.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0087 is in the 34th percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
mavenpatch availablevia ghsa
Product: net.sourceforge.plantuml:plantuml-mitFixed in: 1.2023.9

Vendor Advisories (1)

mavenGHSA-p2mf-q26j-3xmhmedium

PlantUML Improper Access Control vulnerability

Jun 27, 2023

References

github.com / plantuml/plantuml/commit/fbe7fa3b25b4c887d83927cffb1009ec6cb8ab1e
Patch
huntr.dev / bounties/fa741f95-b53c-4ed7-b157-e32c5145164c
ExploitPatchThird Party Advisory
lists.fedoraproject.org / archives/list/[email protected]/message/FV7XL3CY3K3K5ER3ASMEQA546MIQQ7QM
Mailing ListThird Party Advisory