CVE-2026-20800: Github.com/go gitea/gitea Gitea Improperly Exposes Issue And Vulnerability

LOW
Advisory Identifier: GHSA-2vgv-hgv4-22mh
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CWE-200
Published
Advisory Summary

CVE-2026-20800 is a LOW gitea improperly exposes issue and vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Github.com/go gitea/gitea libraries in the Go ecosystem. The issue involves gitea improperly exposes issue and pull request titles. Remediation is available by upgrading affected packages to version 1.25.4.

CVE-2026-20800 at a Glance

CVE Identifier CVE-2026-20800
GHSA Identifier GHSA-2vgv-hgv4-22mh
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Github.com/go gitea/gitea
Package Ecosystem Go
Published Date
Last Updated

How to Fix CVE-2026-20800

To remediate this vulnerability, upgrade all affected Github.com/go gitea/gitea dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/go-gitea/gitea fixed: 1.25.4 
Upgrade github.com/go-gitea/gitea to 1.25.4
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/go-gitea/gitea

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-20800, inspect your project dependencies for Github.com/go gitea/gitea:

inspect dependencies for github.com/go-gitea/gitea

Analyze the terminal output to locate any version of Github.com/go gitea/gitea in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.25.4), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In Github.com/go gitea/gitea, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Gitea's notification API does not re-validate repository access permissions when returning notification details. After a user's access to a private repository is revoked, they may still view issue and pull request titles through previously received notifications.

CVE-2026-20800 Affected Github.com/go gitea/gitea Versions

1 component(s)
Fixed Versions:
1.25.4
Product / Package Ecosystem Affected Versions Fixed Version
github.com/go-gitea/gitea
golang/github.com/go-gitea/gitea
Go
< 1.25.4
1.25.4

References

NVD — CVE-2026-20800 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-20800
Github.com/go gitea/gitea Source Repository REPOSITORY
https://github.com/go-gitea/gitea/pull/36339
Security Fix Commit FIX COMMIT
https://github.com/go-gitea/gitea/commit/67e75f30a83d2523cedc37ad7b03bcba66947833
blog.gitea.com/release-of-1.25.4 WEB
https://blog.gitea.com/release-of-1.25.4
Github.com/go gitea/gitea Source Repository REPOSITORY
https://github.com/go-gitea/gitea
Github.com/go gitea/gitea Release RELEASE
https://github.com/go-gitea/gitea/releases/tag/v1.25.4

Frequently Asked Questions

What is CVE-2026-20800?
CVE-2026-20800 is a security vulnerability in Github.com/go gitea/gitea involving Gitea improperly exposes issue and pull request titles under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Github.com/go gitea/gitea versions are affected?
Affected versions include releases prior to 1.25.4 across affected packages: github.com/go-gitea/gitea.
What version fixes CVE-2026-20800?
Upgrading to 1.25.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/go-gitea/gitea affected?
Yes, github.com/go-gitea/gitea is affected in releases prior to 1.25.4. Upgrade your dependency to 1.25.4 or later.
What CWE is associated with CVE-2026-20800?
CVE-2026-20800 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check Go dependencies for CVE-2026-20800?
Run the dependency tree command: 'inspect dependencies for github.com/go-gitea/gitea'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-2vgv-hgv4-22mh",
  "modified" : "2026-01-23T20:11:50Z",
  "published" : "2026-01-23T00:31:16Z",
  "aliases" : [ "CVE-2026-20800" ],
  "summary" : "Gitea improperly exposes issue and pull request titles",
  "details" : "Gitea's notification API does not re-validate repository access permissions when returning notification details. After a user's access to a private repository is revoked, they may still view issue and pull request titles through previously received notifications.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/go-gitea/gitea"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.25.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-20800"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-gitea/gitea/pull/36339"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-gitea/gitea/commit/67e75f30a83d2523cedc37ad7b03bcba66947833"
  }, {
    "type" : "WEB",
    "url" : "https://blog.gitea.com/release-of-1.25.4"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/go-gitea/gitea"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-gitea/gitea/releases/tag/v1.25.4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-01-23T20:11:50Z",
    "nvd_published_at" : "2026-01-22T22:16:17Z"
  }
}