CVE-2026-20800Network attack vectorHinoki check available

Private issue-title disclosure via stale notification authorization

Published Jan 22, 2026 · Updated Jan 22, 2026

Information disclosure in Gitea 1.25.3 and earlier allows remote authenticated users to read private issue and pull request titles. The ToNotificationThread converter returned repository data with a synthetic read permission instead of checking the caller's current repository permission. A previously authorized user must retain an old notification after collaborator access is revoked; exposure is limited to notification-linked repository metadata.

CVSS severity6.5
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in Gitea 1.25.3 and earlier allows remote authenticated users to read private issue and pull request titles. The ToNotificationThread converter returned repository data with a synthetic read permission instead of checking the caller's current repository permission. A previously authorized user must retain an old notification after collaborator access is revoked; exposure is limited to notification-linked repository metadata.

The record

CVE
CVE-2026-20800
Published
Jan 22, 2026
Updated
Jan 22, 2026
Vendor
Gitea
Product
Gitea
Classifications
CWE-200, T1213.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <=1.25.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Gitea · Giteaversion=0 <=1.25.3

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1213.003Data from Information Repositories: Code Repositories

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo