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01 Record

CVE-2026-59247

Insufficient verification of Hex package metadata in Gleam

HighPUBLISHEDCNA: EEF
CNA base score7.6 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
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02 Description

Insufficient verification of Hex package metadata in Gleam

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.18% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 7.3% of scored records. A rank, not a probability.
NVD base score
7.6 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/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
NVD analysis status
Deferred. NVD last modified this record on 2026-10-23.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-07-29 14:24Z3 MO AGO
Last updated
2026-09-08 01:07Z1 MO AGO
Reserved
2026-07-04
Assigning CNA
EEF
Record state
PUBLISHED
Severity
High (CVSS 7.6)
CNA CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Weaknesses
  • CWE-345Insufficient Verification of Data AuthenticityClass
Data version
5.2
Document digest
9e132fe99e896d66bf7574bd6ba1b2c9e881d2727ee602674160b9a58cef2bd0

05 Affected products

VendorProductVersionsPlatforms
gleam-langgleam0.18.0 to < 1.18.0, 8447b78cc844ff4aec44eea23dbd68d1fea11f11 to < c9c0d48c123c8abae6db8dd61b25ccb427ed3d35, v0.18.0-elixir to < v1.18.0-elixir, v0.18.0-elixir-slim to < v1.18.0-elixir-slim, v0.18.0-elixir-alpine to < v1.18.0-elixir-alpine, v0.18.0-erlang to < v1.18.0-erlang, v0.18.0-erlang-slim to < v1.18.0-erlang-slim, v0.18.0-erlang-alpine to < v1.18.0-erlang-alpine, v0.18.0-node to < v1.18.0-node, v0.18.0-node-slim to < v1.18.0-node-slim, v0.18.0-node-alpine to < v1.18.0-node-alpine, v1.6.0-scratch to < v1.18.0-scratch—

06 References