GHSA-pmwq-pjrm-6p5r
in-toto-golang and in-toto-python have inconsistent negation behavior
Impact
What kind of vulnerability is it? Who is impacted?
in-toto-golang and in-toto-python both support glob patterns in artifact rules to indicate the artifacts that a rule applies to. Both support negations in character classes to indicate what should not be matched, but they used different operators to indicate the negation. in-toto-python uses ! while in-toto-golang used ^. A layout authored with the expectations of one implementation can therefore exhibit different behavior in the other implementation.
This impacts users in a specific set of circumstances where two different implementations are used to verify the same layout + attestation bundle at different stages of the same pipeline. As a rule of thumb, we advise using a single implementation across all aspects of a pipeline, from layout creation to pipeline execution and verification to prevent this class of bugs.
Patches
Has the problem been patched? What versions should users upgrade to?
in-toto-golang has been updated to use ! instead of ^ to indicate negation. See https://github.com/in-toto/in-toto-golang/pull/462. This is part of v0.11.0.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
What each source reports
GitHub Advisories Score used
in-toto-golang and in-toto-python have inconsistent negation behavior
Impact
What kind of vulnerability is it? Who is impacted?
in-toto-golang and in-toto-python both support glob patterns in artifact rules to indicate the artifacts that a rule applies to. Both support negations in character classes to indicate what should not be matched, but they used different operators to indicate the negation. in-toto-python uses ! while in-toto-golang used ^. A layout authored with the expectations of one implementation can therefore exhibit different behavior in the other implementation.
This impacts users in a specific set of circumstances where two different implementations are used to verify the same layout + attestation bundle at different stages of the same pipeline. As a rule of thumb, we advise using a single implementation across all aspects of a pipeline, from layout creation to pipeline execution and verification to prevent this class of bugs.
Patches
Has the problem been patched? What versions should users upgrade to?
in-toto-golang has been updated to use ! instead of ^ to indicate negation. See https://github.com/in-toto/in-toto-golang/pull/462. This is part of v0.11.0.
- Record
GHSA-pmwq-pjrm-6p5r- CVSS 3.1
- 4.1 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-168
- Updated
- 2026-11-02
OSV
in-toto-golang and in-toto-python have inconsistent negation behavior
Impact
What kind of vulnerability is it? Who is impacted?
in-toto-golang and in-toto-python both support glob patterns in artifact rules to indicate the artifacts that a rule applies to. Both support negations in character classes to indicate what should not be matched, but they used different operators to indicate the negation. in-toto-python uses ! while in-toto-golang used ^. A layout authored with the expectations of one implementation can therefore exhibit different behavior in the other implementation.
This impacts users in a specific set of circumstances where two different implementations are used to verify the same layout + attestation bundle at different stages of the same pipeline. As a rule of thumb, we advise using a single implementation across all aspects of a pipeline, from layout creation to pipeline execution and verification to prevent this class of bugs.
Patches
Has the problem been patched? What versions should users upgrade to?
in-toto-golang has been updated to use ! instead of ^ to indicate negation. See https://github.com/in-toto/in-toto-golang/pull/462. This is part of v0.11.0.
- Record
GHSA-pmwq-pjrm-6p5r- CVSS 3.1
- 4.1 Medium
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-168
- Updated
- 2026-11-02
OSVGO-2026-5547No score
in-toto-golang and in-toto-python have inconsistent negation behavior in github.com/in-toto/in-toto-golang
in-toto-golang and in-toto-python have inconsistent negation behavior in github.com/in-toto/in-toto-golang
- Record
GO-2026-5547- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/in-toto/in-toto-golangGo | before 0.11.0 | 0.11.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
GHSA-pmwq-pjrm-6p5r is a medium vulnerability (CVSS 4.1) in github.com/in-toto/in-toto-golang, published May 8, 2026. No source lists public exploit code. Fixed in github.com/in-toto/in-toto-golang 0.11.0.