UBUNTU-CVE-2026-105280

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Source
https://ubuntu.com/security/CVE-2026-105280
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-105280.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-105280
Upstream
Published
2026-10-15T00:00:00Z
Modified
2026-10-17T12:59:46Z
Severity
  • 6.9 (Medium) CVSS_V4 - 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 CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Improper Validation of Integrity Check Value vulnerability in hexpm hex allows a package mirror to substitute the tarball that mix hex.package fetch PACKAGE VERSION --output - writes to standard output. Hex compares a fetched tarball's inner and outer checksums with the repository's signed registry before writing it to a file or unpacking it. The standard output branch of mix hex.package fetch writes the bytes returned by Hex.SCM.fetch/3 without that comparison, and Hex.SCM.fetch/3 doesn't verify freshly downloaded tarballs itself. When a mirror configured with HEX_MIRROR_URL or mirror_url serves altered bytes, the command prints them and exits successfully, while the same fetch with --output FILE fails with a checksum mismatch. Hex also prints diagnostics to standard output while the command runs: the body of a failed HTTP response from the update check or a registry fetch, and API warnings from the x-hex-message header. A mirror that answers one of those requests with an error whose body is a tar archive gets that archive written to standard output ahead of the verified tarball, so a pipeline that unpacks standard output extracts the mirror's files. This happens even when the checksum check then fails, because the archive is already on standard output. This issue affects hex: from 0.20.2 before 2.5.2.

References

Affected packages

Ubuntu:24.04:LTS / erlang-hex

Package

Name
erlang-hex
Purl
pkg:deb/ubuntu/erlang-hex?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.0.5-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "erlang-hex",
            "binary_version":  "2.0.5-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-105280.json"

Ubuntu:26.10 / erlang-hex

Package

Name
erlang-hex
Purl
pkg:deb/ubuntu/erlang-hex?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.0.6-2build1
2.5.1-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "erlang-hex",
            "binary_version":  "2.5.1-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-105280.json"

Ubuntu:26.04:LTS / erlang-hex

Package

Name
erlang-hex
Purl
pkg:deb/ubuntu/erlang-hex?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.0.6-2
2.0.6-2build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "erlang-hex",
            "binary_version":  "2.0.6-2build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-105280.json"