CVE-2026-96580 json
Gitea Actions memory exhaustion through large static matrices
published last mo. modified 28d ago also BIT-gitea-2026-96580 , EUVD-2026-93924 , GHSA-p3rv-cr5f-9gjh
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- bitnami gitea 28.0.0
- gitea gitea 28.0.0
- github.com/go-gitea/gitea#39295 pull request
- github.com/go-gitea/gitea/releases/tag/v28.0.0 release
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.35% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| OSV | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | gitea | <28.0.0 |
28.0.0 |
Affected products
- Gitea Gitea
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
References
-
github.com
/go-gitea/gitea/pull/39295
patch
-
github.com
/go-gitea/gitea/security/advisories/GHSA-p3rv-cr5f-9gjh
vendor-advisory, advisory
-
blog.gitea.com
/release-of-28.0.0/
release-notes, article
-
github.com
/go-gitea/gitea/releases/tag/v28.0.0
release-notes, article
-
nvd.nist.gov
/vuln/detail/CVE-2026-96580
web
Sources
- CVE List CVE-2026-96580
- NVD CVE-2026-96580
- OSV BIT-gitea-2026-96580
- Maintainer advisory GHSA-p3rv-cr5f-9gjh
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of go-gitea/gitea published their own advisory on GitHub. Reviewed sources take precedence over it.