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CVE-2019-10101

25
FAUCET Score

CVE-2019-10101 describes a critical vulnerability in JetBrains Kotlin versions prior to 1.3.30, where the build process used unencrypted HTTP connections for artifact resolution, making it susceptible to Man-in-the-Middle (MITM) attacks. This vulnerability carries a high CVSS score of 8.1, indicating a network-based attack with high impact on confidentiality, integrity, and availability, despite requiring high attack complexity. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.3.30CPE matchmatch criteria
cpe:2.3:a:jetbrains:kotlin:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.62%
Probability of exploitation in next 30 days
EPSS Percentile
73.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0162 is in the 31st percentile among its peer group of 8,918 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

blog.jetbrains.com / blog/2019/06/19/jetbrains-security-bulletin-q1-2019
Vendor Advisory
medium.com / bugbountywriteup/want-to-take-over-the-java-ecosystem-all-you-need-is-a-mitm-1fc329d898fb
ExploitThird Party Advisory
security.netapp.com / advisory/ntap-20230818-0012