GHSA-94v7-wxj6-r2q5
multicast in source builds from vulnerable setuptools dependency
5.9 MediumFix available
GHSA-94v7-wxj6-r2q5 is a medium vulnerability (CVSS 5.9) in multicast, published May 28, 2025. No source lists public exploit code. Fixed in multicast 2.0.9a0.
- Severity
- 5.9 MediumCVSS 4.0, GitHub Advisories
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
2.0.9a0multicast +1 more
Description
Impact
- Some source-builds may be impacted by a CWE-1395 (eg. vulnerable
setuptoolsdependency).- Multicast prior to v2.0.9a3 on systems with minimal dependancies installed may use
setuptools <78.1.1and thus rely on a compromised dependency. In some cases there is a chance that source-builds would fail due to an exploit of the closely related CVE-2025-47273, or become arbitrarily modified.
- Multicast prior to v2.0.9a3 on systems with minimal dependancies installed may use
Patches
- Pre-release version v2.0.9a0 and later resolve the issue by bumping requirements to
setuptools>=80.4- Pre-release version v2.0.9a3 and later are recommended for improved stability over v2.0.9a0
Workarounds
- Further hardening in v2.0.9a4+ of the build process in CI builds allowing source builds to be verified via GH attestations.
References
- GHSA-5rjg-fvgr-3xxf
- pypa/setuptools#4946
Fixes
- https://github.com/reactive-firewall/multicast/blob/c5c7c7de272421d944beca8452871bca6bfd151f/tests/requirements.txt#L32
- https://github.com/reactive-firewall/multicast/blob/c5c7c7de272421d944beca8452871bca6bfd151f/docs/requirements.txt#L27
- https://github.com/reactive-firewall/multicast/blob/c5c7c7de272421d944beca8452871bca6bfd151f/requirements.txt#L26
- https://github.com/reactive-firewall/multicast/blob/c5c7c7de272421d944beca8452871bca6bfd151f/pyproject.toml#L2
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Active
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Affected packages
What each source reports
GitHub Advisories Score used
multicast in source builds from vulnerable setuptools dependency
Impact
- Some source-builds may be impacted by a CWE-1395 (eg. vulnerable
setuptoolsdependency).- Multicast prior to v2.0.9a3 on systems with minimal dependancies installed may use
setuptools <78.1.1and thus rely on a compromised dependency. In some cases there is a chance that source-builds would fail due to an exploit of the closely related CVE-2025-47273, or become arbitrarily modified.
- Multicast prior to v2.0.9a3 on systems with minimal dependancies installed may use
Patches
- Pre-release version v2.0.9a0 and later resolve the issue by bumping requirements to
setuptools>=80.4- Pre-release version v2.0.9a3 and later are recommended for improved stability over v2.0.9a0
Workarounds
- Further hardening in v2.0.9a4+ of the build process in CI builds allowing source builds to be verified via GH attestations.
References
- GHSA-5rjg-fvgr-3xxf
- pypa/setuptools#4946
Fixes
- https://github.com/reactive-firewall/multicast/blob/c5c7c7de272421d944beca8452871bca6bfd151f/tests/requirements.txt#L32
- https://github.com/reactive-firewall/multicast/blob/c5c7c7de272421d944beca8452871bca6bfd151f/docs/requirements.txt#L27
- https://github.com/reactive-firewall/multicast/blob/c5c7c7de272421d944beca8452871bca6bfd151f/requirements.txt#L26
- https://github.com/reactive-firewall/multicast/blob/c5c7c7de272421d944beca8452871bca6bfd151f/pyproject.toml#L2
- Record
GHSA-94v7-wxj6-r2q5- CVSS 4.0
- 5.9 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-1395
- Updated
- 2026-11-02
OSV
multicast in source builds from vulnerable setuptools dependency
Impact
- Some source-builds may be impacted by a CWE-1395 (eg. vulnerable
setuptoolsdependency).- Multicast prior to v2.0.9a3 on systems with minimal dependancies installed may use
setuptools <78.1.1and thus rely on a compromised dependency. In some cases there is a chance that source-builds would fail due to an exploit of the closely related CVE-2025-47273, or become arbitrarily modified.
- Multicast prior to v2.0.9a3 on systems with minimal dependancies installed may use
Patches
- Pre-release version v2.0.9a0 and later resolve the issue by bumping requirements to
setuptools>=80.4- Pre-release version v2.0.9a3 and later are recommended for improved stability over v2.0.9a0
Workarounds
- Further hardening in v2.0.9a4+ of the build process in CI builds allowing source builds to be verified via GH attestations.
References
- GHSA-5rjg-fvgr-3xxf
- pypa/setuptools#4946
Fixes
- https://github.com/reactive-firewall/multicast/blob/c5c7c7de272421d944beca8452871bca6bfd151f/tests/requirements.txt#L32
- https://github.com/reactive-firewall/multicast/blob/c5c7c7de272421d944beca8452871bca6bfd151f/docs/requirements.txt#L27
- https://github.com/reactive-firewall/multicast/blob/c5c7c7de272421d944beca8452871bca6bfd151f/requirements.txt#L26
- https://github.com/reactive-firewall/multicast/blob/c5c7c7de272421d944beca8452871bca6bfd151f/pyproject.toml#L2
- Record
GHSA-94v7-wxj6-r2q5- CVSS 4.0
- 5.9 Medium
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-1395
- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
github.com/pypa/setuptools/security/advisories/GHSA-5rjg-fvgr-3xxf