CVE-2026-26231Public exploitNetwork attack vector

Unauthorized commits via reversed maintainer-edit authorization

Published Jul 3, 2026 · Updated Jul 3, 2026

Incorrect authorization in Gitea 1.26.1 and earlier allows remote authenticated users with repository read access to push arbitrary commits. PR creation accepts allow_maintainer_edit on a reversed fork without checking write access to the head repository, while CanMaintainerWriteToBranch checks base-repository ownership instead of the push target. Repository read access is sufficient to alter any readable repository, including public repositories, without legitimate write permission.

CVSS severity8.5
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Gitea 1.26.1 and earlier allows remote authenticated users with repository read access to push arbitrary commits. PR creation accepts allow_maintainer_edit on a reversed fork without checking write access to the head repository, while CanMaintainerWriteToBranch checks base-repository ownership instead of the push target. Repository read access is sufficient to alter any readable repository, including public repositories, without legitimate write permission.

The record

CVE
CVE-2026-26231
Published
Jul 3, 2026
Updated
Jul 3, 2026
Vendor
Gitea
Product
Gitea
Classifications
CWE-863, T1190, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 3, 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 <=1.26.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Gitea · Giteaversion=0 <=1.26.1

Published CVSS scores

8.5Gitea LimitedCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1190Exploit Public-Facing Application
T1565.001Stored Data Manipulation

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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