CVE-2026-23940

HIGH EPSS 35.2%
Published Mar 13, 20263mo ago · Modified Apr 6, 20262mo ago
7.1 CVSS 4.0
High
Find Similar
Published Mar 13, 2026 3mo ago
Last Modified Apr 6, 2026 2mo ago

Description

Uncontrolled Resource Consumption vulnerability in hexpm hexpm/hexpm allows Excessive Allocation. Publishing an oversized package can cause Hex.pm to run out of memory while extracting the uploaded package tarball. This can terminate the affected application instance and result in a denial of service for package publishing and potentially other package-processing functionality. This issue affects hexpm: before 495f01607d3eae4aed7ad09b2f54f31ec7a7df01; hex.pm: before 2026-03-10.

CVSS Details

Base Score
7.1
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
35.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-400 Uncontrolled Resource Consumption Resource Mgmt

Affected Products 1

VendorProductVersionRange
hexhexpm* <2026-03-09

References 4

  • cna.erlef.org https://cna.erlef.org/cves/CVE-2026-23940.html
  • github.com https://github.com/hexpm/hexpm/commit/495f01607d3eae4aed7ad09b2f54f31ec7a7df01
    Patch
  • github.com https://github.com/hexpm/hexpm/security/advisories/GHSA-jp8w-gxf6-8hcr
    MitigationVendor Advisory
  • osv.dev https://osv.dev/vulnerability/EEF-CVE-2026-23940

Remediation

  • github.com https://github.com/hexpm/hexpm/commit/495f01607d3eae4aed7ad09b2f54f31ec7a7df01
    Patch