CVE-2026-96580: high-severity vulnerability in Gitea
Gitea Actions memory exhaustion through large static matrices
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.2%
exploitation probability
0.2%top 96% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Gitea · GiteaRelated CVEs — Gitea
In the same product, most dangerous first.
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