CVE-2026-59763Public exploitNetwork attack vector

Resource exhaustion via unbounded Arch file metadata

Published Aug 13, 2026 · Updated Aug 13, 2026

Denial of service in Gitea 1.26.4 and earlier allows remote authenticated users to exhaust server resources via Arch package uploads. ParsePackage appends every non-dot regular tar-entry name to FileMetadata.Files without bounding the entry count or cumulative name bytes, then serializes and stores the list for repository-index generation. Package-publishing permission is required; highly compressible archives amplify CPU, memory, database-storage, and index-processing costs without reported confidentiality or integrity loss.

CVSS severity4.3
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Gitea 1.26.4 and earlier allows remote authenticated users to exhaust server resources via Arch package uploads. ParsePackage appends every non-dot regular tar-entry name to FileMetadata.Files without bounding the entry count or cumulative name bytes, then serializes and stores the list for repository-index generation. Package-publishing permission is required; highly compressible archives amplify CPU, memory, database-storage, and index-processing costs without reported confidentiality or integrity loss.

The record

CVE
CVE-2026-59763
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
Gitea
Product
Gitea
Classifications
CWE-284, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.26.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Gitea · Giteaversion=0 <=1.26.4

Published CVSS scores

4.3CISA ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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