CVE-2021-41087
Improperly Implemented path matching for in-toto-golang
in-toto-golang is a go implementation of the in-toto framework to protect software supply chain integrity. In affected versions authenticated attackers posing as functionaries (i.e., within a trusted set of users for a layout) are able to create attestations that may bypass DISALLOW rules in the same layout. An attacker with access to trusted private keys, may issue an attestation that contains a disallowed artifact by including path traversal semantics (e.g., foo vs dir/../foo). Exploiting this vulnerability is dependent on the specific policy applied. The problem has been fixed in version 0.3.0.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Improperly Implemented path matching for in-toto-golang
in-toto-golang is a go implementation of the in-toto framework to protect software supply chain integrity. In affected versions authenticated attackers posing as functionaries (i.e., within a trusted set of users for a layout) are able to create attestations that may bypass DISALLOW rules in the same layout. An attacker with access to trusted private keys, may issue an attestation that contains a disallowed artifact by including path traversal semantics (e.g., foo vs dir/../foo). Exploiting this vulnerability is dependent on the specific policy applied. The problem has been fixed in version 0.3.0.
- Record
CVE-2021-41087- CVSS 3.1
- 5.6 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N - Weakness
- CWE-345
- Updated
- 2026-11-02
EUVDEUVD-2021-2118
in-toto-golang is a go implementation of the in-toto framework to protect software supply chain integrity. In affected versions authenticated attackers posing as functionaries (i.e., within a trusted set of users for a layout) are able to create attestations that may bypass DISALLOW rules in the same layout. An attacker with access to trusted private keys, may issue an attestation that contains a disallowed artifact by including path traversal semantics (e.g., foo vs dir/../foo). Exploiting this vulnerability is dependent on the specific policy applied. The problem has been fixed in version 0.3.0.
- Record
EUVD-2021-2118- CVSS 3.1
- 5.6 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vrxp-mg9f-hwf3
Improperly Implemented path matching for in-toto-golang
Impact
Authenticated attackers posing as functionaries (i.e., within a trusted set of users for a layout) are able to create attestations that may bypass DISALLOW rules in the same layout. An attacker with access to trusted private keys, may issue an attestation that contains a disallowed artifact by including path traversal semantics (e.g., foo vs dir/../foo).
Patches
The problem has been fixed in version 0.3.0.
Workarounds
Exploiting this vulnerability is dependent on the specific policy applied.
For more information
If you have any questions or comments about this advisory:
- Open an issue in in-toto-golang
- Email us at in-toto-public
- If this is a sensitive security-relevant disclosure, please send a PGP encrypted email to [email protected] or [email protected]
- Record
GHSA-vrxp-mg9f-hwf3- CVSS 3.1
- 5.6 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N - Weakness
- CWE-22, CWE-345
- Updated
- 2026-11-02
NVD
in-toto-golang is a go implementation of the in-toto framework to protect software supply chain integrity. In affected versions authenticated attackers posing as functionaries (i.e., within a trusted set of users for a layout) are able to create attestations that may bypass DISALLOW rules in the same layout. An attacker with access to trusted private keys, may issue an attestation that contains a disallowed artifact by including path traversal semantics (e.g., foo vs dir/../foo). Exploiting this vulnerability is dependent on the specific policy applied. The problem has been fixed in version 0.3.0.
- Record
CVE-2021-41087- CVSS 3.1
- 5.6 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:N/I:P/A:N - Weakness
- CWE-345, CWE-22
- Updated
- 2026-11-02
OSV
in-toto-golang is a go implementation of the in-toto framework to protect software supply chain integrity. In affected versions authenticated attackers posing as functionaries (i.e., within a trusted set of users for a layout) are able to create attestations that may bypass DISALLOW rules in the same layout. An attacker with access to trusted private keys, may issue an attestation that contains a disallowed artifact by including path traversal semantics (e.g., foo vs dir/../foo). Exploiting this vulnerability is dependent on the specific policy applied. The problem has been fixed in version 0.3.0.
- Record
CVE-2021-41087- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVGHSA-vrxp-mg9f-hwf3
Improperly Implemented path matching for in-toto-golang
Impact
Authenticated attackers posing as functionaries (i.e., within a trusted set of users for a layout) are able to create attestations that may bypass DISALLOW rules in the same layout. An attacker with access to trusted private keys, may issue an attestation that contains a disallowed artifact by including path traversal semantics (e.g., foo vs dir/../foo).
Patches
The problem has been fixed in version 0.3.0.
Workarounds
Exploiting this vulnerability is dependent on the specific policy applied.
For more information
If you have any questions or comments about this advisory:
- Open an issue in in-toto-golang
- Email us at in-toto-public
- If this is a sensitive security-relevant disclosure, please send a PGP encrypted email to [email protected] or [email protected]
- Record
GHSA-vrxp-mg9f-hwf3- CVSS 3.1
- 5.6 Medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N - Weakness
- CWE-22, CWE-345
- Updated
- 2026-11-02
OSVGO-2022-0936 No score
Improperly Implemented path matching for in-toto-golang in github.com/in-toto/in-toto-golang
Improperly Implemented path matching for in-toto-golang in github.com/in-toto/in-toto-golang
- Record
GO-2022-0936- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/in-toto/in-toto-golangGo |
through 0.2.0 | 0.3.0 |
github.com/in-toto/in-toto-golangGo |
before 0.3.0 | 0.3.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-41087 is a medium vulnerability (CVSS 5.6) in In-toto In-toto-golang, published September 21, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.43%, the 37th percentile. Fixed in github.com/in-toto/in-toto-golang 0.3.0.