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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Hex Hexpm
cpe:2.3:a:hex:hexpm:*:*:*:*:*:*:*:*
|
— |
2026-03-09
|
References 4
https://github.com/hexpm/hexpm/commit/495f01607d3eae4aed7ad09b2f54f31ec7a7df01
6b3ad84c-e1a6-4bf7-a703-f496b71e49db
https://github.com/hexpm/hexpm/security/advisories/GHSA-jp8w-gxf6-8hcr
6b3ad84c-e1a6-4bf7-a703-f496b71e49db
https://cna.erlef.org/cves/CVE-2026-23940.html
6b3ad84c-e1a6-4bf7-a703-f496b71e49db
https://osv.dev/vulnerability/EEF-CVE-2026-23940
6b3ad84c-e1a6-4bf7-a703-f496b71e49db