Gitea expanded a workflow's static strategy.matrix into its full Cartesian product without a size limit when creating a run, before the fork pull request approval gate applied. A user who can open a pull request from a fork could submit a small workflow file whose matrix expands to a very large number of jobs, consuming server memory and potentially terminating the Gitea process. No runner is required. Static matrices above 256 combinations are now rejected before expansion.
{
"cpes": [
"cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*"
],
"severity": "High"
}