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 hex.pm: before 2026-03-10.
Affected products
hex: hexpm
References5
- github.com/hexpm/hexpm/security/advisories/GHSA-jp8w-gxf6-8hcr MitigationVendor Advisory
- github.com/hexpm/hexpm/commit/495f01607d3eae4aed7ad09b2f54f31ec… Patch
- cna.erlef.org/cves/CVE-2026-23940.html
- github.com/hexpm/hexpm/commit/82911daf5f8fb2ab44f298e3ba22b90bc…
- osv.dev/vulnerability/EEF-CVE-2026-23940
Metrics
- CVSS 3.1
-
6.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - CVSS 4.0
-
7.1
HIGH
Score source: CNA
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 - EPSS — exploit probability
- 1% percentile: 44 · as of 12 November 2026
- CWE
- CWE-400
Could this be exploited in your environment?
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