CVE-2026-23940

MEDIUM

hexpm < 495f01607d3eae4aed7ad09b2f54f31ec7a7df01 - Denial of Service via Oversized Package Upload

Title source: llm

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.

References (4)

Core 4

Core References

Vendor Advisory vendor-advisory related

https://github.com/hexpm/hexpm/security/advisories/GHSA-jp8w-gxf6-8hcr

Patch patch

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

View Patch ZIP pw:eip

Scores

CVSS v3 6.5

EPSS 0.0007

EPSS Percentile 21.0%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-400

Status published

Products (4)

hex/hexpm < 2026-03-09

hexpm/hex.pm < 2026-03-10

hexpm/hexpm < 495f01607d3eae4aed7ad09b2f54f31ec7a7df01

hexpm/hexpm pkg:github/hexpm/hexpm@0 - pkg:github/hexpm/hexpm@495f01607d3eae4aed7ad09b2f54f31ec7a7df01

Published Mar 13, 2026

Tracked Since Mar 14, 2026