CVE-2026-104633 json
Gitea migration memory exhaustion from zero page size
published last mo. modified last mo. also BIT-gitea-2026-104633 , EUVD-2026-94062 , GHSA-jj5r-9rpc-8h6h
- cvss
- 6.5
- 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 34%
- public exploits
- 0
- none known
Summary
When migrating a repository from another Gitea instance, Gitea used the page size reported in the source server's API settings to end its paginated downloads. A source that reported `max_response_items` as `0` made these loops run indefinitely and grow server memory until it was exhausted. Any user who can migrate repositories could point a migration at a server they control and cause a denial of service.
Patch / fix
- bitnami gitea 28.1.0
- gitea gitea 28.1.0
- github.com/go-gitea/gitea#39501 pull request
- github.com/go-gitea/gitea#39507 pull request
- github.com/go-gitea/gitea/releases/tag/v28.1.0 release
Is CVE-2026-104633 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-14).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| OSV | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | gitea | <28.1.0 |
28.1.0 |
Affected products
- Gitea Gitea
Classification
References
-
github.com
/go-gitea/gitea/pull/39501
patch
-
github.com
/go-gitea/gitea/pull/39507
patch
-
github.com
/go-gitea/gitea/security/advisories/GHSA-jj5r-9rpc-8h6h
vendor-advisory, advisory
-
blog.gitea.com
/release-of-28.1.0/
release-notes, article
-
github.com
/go-gitea/gitea/releases/tag/v28.1.0
release-notes, article
-
nvd.nist.gov
/vuln/detail/CVE-2026-104633
web
Sources
- CVE List CVE-2026-104633
- NVD CVE-2026-104633
- OSV BIT-gitea-2026-104633
- Maintainer advisory GHSA-jj5r-9rpc-8h6h
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.