CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
EPSS
Percentile
19.4%
TheΒ core.exportVariable
Β function uses a well known delimiter that attackers can use to break out of that specific variable and assign values to other arbitrary variables. Workflows that write untrusted values to the GITHUB_ENV
file may cause the path or other environment variables to be modified without the intention of the workflow or action author.
Users should upgrade to @actions/core v1.9.1
.
If you are unable to upgrade the @actions/core
package, you can modify your action to ensure that any user input does not contain the delimiter _GitHubActionsFileCommandDelimeter_
before calling core.exportVariable
.
More information about setting-an-environment-variable in workflows
If you have any questions or comments about this advisory:
actions/toolkit