01 Record
CVE-2026-103061
Path traversal in Gleam via unvalidated package application names
MediumPUBLISHEDCNA: EEF
CNA base score5.9 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
02 Description
Path traversal in Gleam via unvalidated package application names
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 ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.39% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 33.7% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (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:A/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
- NVD analysis status
- Deferred. NVD last modified this record on 2026-10-16.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
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
- 2026-10-12 18:23Z17 DAYS AGO
- Last updated
- 2026-10-16 17:49Z13 DAYS AGO
- Reserved
- 2026-10-07
- Assigning CNA
- EEF
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.9)
- CNA CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- Weaknesses
- CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
- Data version
- 5.2
- Document digest
- 4c0821c3271eb20a440bd0a859143fcb35ee807413f5414f30c1fe653ade1c7a
05 Affected products
VendorProductVersionsPlatforms
GleamGleam0.32.4 to < 1.19.2, v0.32.4-elixir to < v1.19.2-elixir, v0.32.4-erlang to < v1.19.2-erlang, v0.32.4-node to < v1.19.2-node, v0.32.4-node-slim to < v1.19.2-node-slim, v0.32.4-elixir-slim to < v1.19.2-elixir-slim, v0.32.4-erlang-slim to < v1.19.2-erlang-slim, v0.32.4-erlang-alpine to < v1.19.2-erlang-alpine, v0.32.4-elixir-alpine to < v1.19.2-elixir-alpine, v0.32.4-node-alpine to < v1.19.2-node-alpine, v0.32.4-scratch to < v1.19.2-scratch, d13f27ee80aae7a521d2e9433c4deaf53f892574 to < *—
06 References
- github.comGitHub Advisoryhttps://github.com/gleam-lang/gleam/security/advisories/GHSA-jhcr-c7qm-8589
- cna.erlef.orgEEF CNA record for CVE-2026-103061https://cna.erlef.org/cves/CVE-2026-103061.html
- osv.devOSV record EEF-CVE-2026-103061https://osv.dev/vulnerability/EEF-CVE-2026-103061
- github.comIntroducing commit d13f27e in gleam-lang/gleamhttps://github.com/gleam-lang/gleam/commit/d13f27ee80aae7a521d2e9433c4deaf53f892574
- github.comFix commit d15c981 in gleam-lang/gleamhttps://github.com/gleam-lang/gleam/commit/d15c981fac6e533d70ac8ee89a6ef4dbf139adc3
- github.comFix commit 54bbb2b in gleam-lang/gleamhttps://github.com/gleam-lang/gleam/commit/54bbb2b98af1505b6eed93c45b1936fc76412e5c
07 Remediation
Upgrade Gleam to 1.19.2 or later. Gleam then rejects a hex.pm release whose OTP application name, or the application name it gives a dependency, isn't a lowercase letter followed by lowercase letters, digits and _.