Resource exhaustion in Hex Hexpm
CVE-2026-23940
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (35.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Hex Hexpm
- Hexpm Hex.pm — versions 0
- Hexpm — versions 0, 82911daf5f8fb2ab44f298e3ba22b90bc1ae3746
Weakness classification (CWE)
References
- 6b3ad84c-e1a6-4bf7-a703-f496b71e49db (related, vendor-advisory, Mitigation, Vendor Advisory)
- 6b3ad84c-e1a6-4bf7-a703-f496b71e49db (related)
- 6b3ad84c-e1a6-4bf7-a703-f496b71e49db (related)
- 6b3ad84c-e1a6-4bf7-a703-f496b71e49db (Patch, patch)
- 6b3ad84c-e1a6-4bf7-a703-f496b71e49db (related)
Frequently asked questions
- What is CVE-2026-23940?
- CVE-2026-23940 is a medium-severity vulnerability in Hex Hexpm, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-03-13.
- How severe is CVE-2026-23940?
- Medium severity. CVSS v3 base score is 6.5 out of 10.