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CVE-2023-30521

19
FAUCET Score

CVE-2023-30521 is a medium-severity vulnerability affecting Jenkins Assembla merge request builder Plugin versions 1.1.13 and earlier. It stems from a missing permission check, allowing unauthenticated attackers to trigger builds of jobs associated with a repository they specify. The attack vector is network-based with low complexity, requiring no user interaction, and could lead to unauthorized job execution (integrity impact). There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.1.13CPE matchmatch criteria
cpe:2.3:a:jenkins:assembla_merge_request_builder:*:*:*:*:*:jenkins:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.52%
Probability of exploitation in next 30 days
EPSS Percentile
41.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0052 is in the 26th percentile among its peer group of 23,723 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

Vendor Patches (1)

jenkinsvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

mavenGHSA-jr86-6j4j-mv45medium

Jenkins Assembla merge request builder Plugin missing authentication to access endpoint

Apr 12, 2023

References

jenkins.io / security/advisory/2023-04-12
Vendor Advisory
openwall.com / lists/oss-security/2023/04/13/3
Mailing ListThird Party Advisory