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TI-2026-69028 Aliases CVE-2026-104633

Memory exhaustion in Gitea migrations from a zero page size

Priority LOW 29CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-400.

Summary

Gitea through 28.0.0 uses the page size reported in a source server's API settings to end paginated downloads during repository migration. A source that reports max_response_items as 0 makes these loops run indefinitely (CWE-835), so server memory grows until it is exhausted. Any user who can migrate repositories can point a migration at a server they control to cause a denial of service.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00397 34th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GiteaGiteaup to 28.0.0—No fix listedCNA
  • Gitea VendorGitea Affected up to 28.0.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*before 28.1.0VulnerableGitea
  • cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:* Versions before 28.1.0 Vulnerable ·Gitea

Remediation

The sources list no fixed version for Gitea.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-07 Threatist record created from CVE-2026-104633
  2. 2026-10-07 Affected versions changed · Red Hat
  3. 2026-10-07 CVSS score added · Red Hat
  4. 2026-10-07 CVSS score added · CISA ADP
  5. 2026-10-07 CISA SSVC decision points changed

References

Patch 2

Advisory 1

Other 2

  • TI-2026-42785 Gitea before 1.27.1 allows remote code execution via the diffpatch API through Git hook installation. KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-11072 The git hook feature in Gitea 1.1.0 through 1.12.5 might allow for authenticated remote… CVSS 3.1HIGH 7.2
  • TI-2022-12910 Gitea before 1.16.7 does not escape git fetch remote. CVSS 3.1HIGH 7.5
  • TI-2019-08404 models/repo_mirror.go in Gitea before 1.7.6 and 1.8.x before 1.8-RC3 mishandles mirror… CVSS 3.1HIGH 8.8
  • TI-2022-00955 Open Redirect on login in go-gitea/gitea CVSS 3.1MEDIUM 6.1
  • TI-2026-68968 Push-to-create bypass of FORCE_PRIVATE policy in Gitea CVSS 3.1MEDIUM 5.4
See all 80 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences