GHSA-77vh-xpmg-72qh
Clarify `mediaType` handling
GHSA-77vh-xpmg-72qh is a low vulnerability (CVSS 3.0) in github.com/opencontainers/image-spec, published November 18, 2021. No source lists public exploit code. Fixed in github.com/opencontainers/image-spec 1.0.2.
- Severity
- 3.0 LowCVSS 3.1, GitHub Advisories
- Exploit chance
- UnscoredNo EPSS score yet
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
1.0.2github.com/opencontainers/image-spec
Description
Impact
In the OCI Image Specification version 1.0.1 and prior, manifest and index documents are not self-describing and documents with a single digest could be interpreted as either a manifest or an index.
Patches
The Image Specification will be updated to recommend that both manifest and index documents contain a mediaType field to identify the type of document.
Release v1.0.2 includes these updates.
Workarounds
Software attempting to deserialize an ambiguous document may reject the document if it contains both “manifests” and “layers” fields or “manifests” and “config” fields.
References
https://github.com/opencontainers/distribution-spec/security/advisories/GHSA-mc8v-mgrf-8f4m
For more information
If you have any questions or comments about this advisory:
- Open an issue in https://github.com/opencontainers/image-spec
- Email us at security@opencontainers.org
- https://github.com/opencontainers/image-spec/commits/v1.0.2
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/opencontainers/image-specGo | before 1.0.2 | 1.0.2 |
What each source reports
GitHub Advisories Score used
Clarify `mediaType` handling
Impact
In the OCI Image Specification version 1.0.1 and prior, manifest and index documents are not self-describing and documents with a single digest could be interpreted as either a manifest or an index.
Patches
The Image Specification will be updated to recommend that both manifest and index documents contain a mediaType field to identify the type of document.
Release v1.0.2 includes these updates.
Workarounds
Software attempting to deserialize an ambiguous document may reject the document if it contains both “manifests” and “layers” fields or “manifests” and “config” fields.
References
https://github.com/opencontainers/distribution-spec/security/advisories/GHSA-mc8v-mgrf-8f4m
For more information
If you have any questions or comments about this advisory:
- Open an issue in https://github.com/opencontainers/image-spec
- Email us at security@opencontainers.org
- https://github.com/opencontainers/image-spec/commits/v1.0.2
- Record
GHSA-77vh-xpmg-72qh- CVSS 3.1
- 3.0 Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N - Weakness
- CWE-843
- Updated
- 2026-11-02
OSV
Clarify `mediaType` handling
Impact
In the OCI Image Specification version 1.0.1 and prior, manifest and index documents are not self-describing and documents with a single digest could be interpreted as either a manifest or an index.
Patches
The Image Specification will be updated to recommend that both manifest and index documents contain a mediaType field to identify the type of document.
Release v1.0.2 includes these updates.
Workarounds
Software attempting to deserialize an ambiguous document may reject the document if it contains both “manifests” and “layers” fields or “manifests” and “config” fields.
References
https://github.com/opencontainers/distribution-spec/security/advisories/GHSA-mc8v-mgrf-8f4m
For more information
If you have any questions or comments about this advisory:
- Open an issue in https://github.com/opencontainers/image-spec
- Email us at security@opencontainers.org
- https://github.com/opencontainers/image-spec/commits/v1.0.2
- Record
GHSA-77vh-xpmg-72qh- CVSS 3.1
- 3.0 Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N - Weakness
- CWE-843
- 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/opencontainers/distribution-spec/security/advisories/GHSA-mc8v-mgrf-8f4m