CVE-2026-58440Public exploitNetwork attack vector

Private repository disclosure via persistent collaborator webhooks

Published Aug 13, 2026 · Updated Aug 13, 2026

Authorization failure in Gitea 1.26.4 and earlier allows remote authenticated users to receive private repository events after access revocation. DeleteCollaboration removes collaboration state but leaves collaborator-created webhooks active, while delivery does not recheck the creator's access. Exploitation requires prior admin collaborator access and webhook creation, after which future issue, comment, and commit data reaches the former collaborator.

CVSS severity6.8
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization failure in Gitea 1.26.4 and earlier allows remote authenticated users to receive private repository events after access revocation. DeleteCollaboration removes collaboration state but leaves collaborator-created webhooks active, while delivery does not recheck the creator's access. Exploitation requires prior admin collaborator access and webhook creation, after which future issue, comment, and commit data reaches the former collaborator.

The record

CVE
CVE-2026-58440
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
Gitea
Product
Gitea
Classifications
CWE-863, T1213.003
Attack vector
network
Privileges
admin

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 privilegesadmin

What is affected?

Gitea · Giteaversion=0 <=1.26.4

Published CVSS scores

6.8GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1213.003Data from Information Repositories Code Repositories

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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