Gitea Helm chart upload decompression denial of service

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-117677
StatePUBLISHED
AssignerGitea
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-01 10:18:35 UTC
Updated2026-11-01 10:18:35 UTC
DescriptionWhen parsing an uploaded Helm chart, Gitea decompressed the archive and read every tar entry while looking for `Chart.yaml` without limiting the decompressed size, and did so before the package size quota was checked; the quota only considers the compressed upload size. A user with package write access to an owner, for example their own account on an instance with open registration, could repeatedly upload small, highly compressed archives that make the server spend CPU time proportional to the decompressed size, degrading the availability of the Gitea instance. The issue does not allow code execution or data access.

Risk And Classification

EPSS: 0.002100000 probability, percentile 0.111990000 (date 2026-11-02)

Problem Types: CWE-400 | CWE-409 | CWE-400 CWE-400: Uncontrolled Resource Consumption | CWE-409 CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Gitea Gitea affected 28.3.0 semver Not specified

References

ReferenceSourceLinkTags
github.com/go-gitea/gitea/security/advisories/GHSA-r6mh-qg79-rqj2 88ee5874-cf24-4952-aea0-31affedb7ff2 github.com
blog.gitea.com/release-of-28.3.0 88ee5874-cf24-4952-aea0-31affedb7ff2 blog.gitea.com
github.com/go-gitea/gitea/pull/39942 88ee5874-cf24-4952-aea0-31affedb7ff2 github.com
github.com/go-gitea/gitea/releases/tag/v28.3.0 88ee5874-cf24-4952-aea0-31affedb7ff2 github.com
github.com/go-gitea/gitea/pull/40085 88ee5874-cf24-4952-aea0-31affedb7ff2 github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: https://github.com/skeletonsec (en)

CNA: https://github.com/jisung-02 (en)

CNA: https://github.com/kewmine (en)

CNA: https://github.com/bircni (en)

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