CVE-2026-58425Public exploitNetwork attack vectorHinoki check available

Cross-client OAuth token metadata disclosure

Published Aug 13, 2026 · Updated Aug 13, 2026

Incorrect authorization in Gitea 1.26.4 and earlier allows remote authenticated users to read metadata for other clients' OAuth tokens. The IntrospectOAuth handler authenticates the caller's client but never compares its application ID with the token grant's ApplicationID before returning grant and user claims. Reachability requires valid OAuth client credentials plus another client's access or refresh token; disclosure is limited to token status, scope, username, issuer, subject, and audience metadata.

CVSS severity4.3
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Incorrect authorization in Gitea 1.26.4 and earlier allows remote authenticated users to read metadata for other clients' OAuth tokens. The IntrospectOAuth handler authenticates the caller's client but never compares its application ID with the token grant's ApplicationID before returning grant and user claims. Reachability requires valid OAuth client credentials plus another client's access or refresh token; disclosure is limited to token status, scope, username, issuer, subject, and audience metadata.

The record

CVE
CVE-2026-58425
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
Gitea
Product
Gitea
Classifications
CWE-200, CWE-863, T1087
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

4.3GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-863Incorrect Authorization
T1087Account Discovery

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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