CVE-2026-105280
Hex writes unverified package tarballs to standard output in mix hex.package fetch
02 Description
Hex writes unverified package tarballs to standard output in mix hex.package fetch
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
- 0.21% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 11.2% of scored records. A rank, not a probability.
- NVD base score
- 6.9 (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:H/VA:N/SC:N/SI:H/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
- Moderate. 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 15:30Z16 DAYS AGO
- Last updated
- 2026-10-16 17:37Z12 DAYS AGO
- Reserved
- 2026-10-08
- Assigning CNA
- EEF
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.9)
- CNA CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N
- Weaknesses
- CWE-354Improper Validation of Integrity Check ValueBase
- Data version
- 5.2
- Document digest
- ef37f452edf87a9990c95c5a27f2a201a551529ae603f3788ff761ea239aae4b
05 Affected products
06 References
- github.comGitHub Advisoryhttps://github.com/hexpm/hex/security/advisories/GHSA-98jr-23pm-vj7c
- cna.erlef.orgEEF CNA record for CVE-2026-105280https://cna.erlef.org/cves/CVE-2026-105280.html
- osv.devOSV record EEF-CVE-2026-105280https://osv.dev/vulnerability/EEF-CVE-2026-105280
- github.comIntroducing commit d1f5a08 in hexpm/hexhttps://github.com/hexpm/hex/commit/d1f5a085d9d4748e1f7d195e4bc39ebd77c28d9c
- github.comFix commit 8a14632 in hexpm/hexhttps://github.com/hexpm/hex/commit/8a14632ca6ba8a8afd2a3f2098bc267c13e13d93
- github.comFix commit 69489f8 in hexpm/hexhttps://github.com/hexpm/hex/commit/69489f8b74213f03db10169e6e5407e6d5fee512
07 Remediation
Upgrade Hex to 2.5.2 or later, for example with mix local.hex. mix hex.package fetch PACKAGE VERSION --output - then verifies the registry checksum before writing the tarball to standard output and prints its messages to standard error.
08 Fixed in
Debian 13
- erlang-hex No fix yet
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- erlang-hex Fixed in 2.5.3-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- erlang-hex No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.04 LTS
- erlang-hex No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.10
- erlang-hex No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.