Medium severity · published Oct 14, 2026
CVE-2026-63021
Gitea Swift package manifest memory exhaustion
6.5
CVSS
0.5%
EPSS
No
On KEV
Description
Gitea's Swift package parser limits each manifest to 128 KiB but does not limit the number of manifests or their aggregate size before reading them into memory. An authenticated user with package-publish permission can upload a highly compressed archive containing many manifests, causing allocations far larger than the uploaded archive. This can exhaust memory, terminate the process, or cause request failures.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
Gitea · Gitea
through 1.27.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63021
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-63021
vendor-advisory
https://github.com/go-gitea/gitea/security/advisories/GHSA-fqxf-w92m-prvq
release-notes
https://blog.gitea.com/release-of-1.27.3/
patch
https://github.com/go-gitea/gitea/pull/39025
patch
https://github.com/go-gitea/gitea/pull/39032
release-notes
https://github.com/go-gitea/gitea/releases/tag/v1.27.3
More from Gitea
9.8
CVE-2026-60004
Gitea Code Injection Vulnerability
9.8
CVE-2026-59774
Gitea Org-mode file disclosure and code execution
9.8
CVE-2026-73278
Gitea WebAuthn bypass during OAuth and OIDC sign-in
9.8
CVE-2026-94205
Gitea fork workflow approval bypass through maintainer-triggered events
9.8
CVE-2022-42968
Gitea before 1.17.3 does not sanitize and escape refs in the git backend
