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
AI Score
Confidence
High
EPSS
Percentile
19.4%
The GitHub Actions ToolKit provides a set of packages to make creating actions easier. The core.exportVariable
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
.
[
{
"product": "toolkit",
"vendor": "actions",
"versions": [
{
"status": "affected",
"version": "<= 1.9.0"
}
]
}
]
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