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CVE-2019-1000012

25
FAUCET Score

CVE-2019-1000012 is a critical signing oracle vulnerability affecting Hex package manager versions 0.14.0 through 0.18.2. This flaw allows attackers to modify packages without detection, potentially leading to remote code execution on a victim's system if they fetch packages from a compromised mirror. With a CVSS score of 8.8 (High), it is easily exploitable over a network with low attack complexity, posing a significant risk of high impact to confidentiality, integrity, and availability. While no public exploits or active exploitation have been observed, and community discussion is minimal, the vulnerability has been addressed in Hex version 0.19.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.14.0, <= 0.18.2CPE matchmatch criteria
cpe:2.3:a:hex:hex:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.88%
Probability of exploitation in next 30 days
EPSS Percentile
55.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0088 is in the 57th percentile among its peer group of 14,848 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 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 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / hexpm/hex/pull/646
PatchThird Party Advisory
github.com / hexpm/hex/pull/651
PatchThird Party Advisory