CVE-2024-6886: Code.gitea.io/gitea Cross-Site Scripting Vulnerability

CRITICAL
Advisory Identifier: GHSA-4h4p-553m-46qh
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CVSS 9.8
CWE-79
Published
Advisory Summary

CVE-2024-6886 is a CRITICAL (CVSS 9.8) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Code.gitea.io/gitea libraries in the Go ecosystem. The issue involves gitea cross-site scripting vulnerability. Remediation is available by upgrading affected packages to version 1.22.1.

CVE-2024-6886 at a Glance

CVE Identifier CVE-2024-6886
GHSA Identifier GHSA-4h4p-553m-46qh
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Code.gitea.io/gitea
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2024-6886

To remediate this vulnerability, upgrade all affected Code.gitea.io/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.

code.gitea.io/gitea fixed: 1.22.1 
Upgrade code.gitea.io/gitea to 1.22.1
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 code.gitea.io/gitea

How to Check if You Are Affected

To determine whether your application is affected by CVE-2024-6886, inspect your project dependencies for Code.gitea.io/gitea:

inspect dependencies for code.gitea.io/gitea

Analyze the terminal output to locate any version of Code.gitea.io/gitea in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.22.1), 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Code.gitea.io/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

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea Gitea Open Source Git Server allows Stored XSS.This issue affects Gitea Open Source Git Server: 1.22.0.

CVE-2024-6886 Affected Code.gitea.io/gitea Versions

1 component(s)
Fixed Versions:
1.22.1
Product / Package Ecosystem Affected Versions Fixed Version
code.gitea.io/gitea
golang/code.gitea.io/gitea
Go
< 1.22.1
1.22.1

References

NVD — CVE-2024-6886 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-6886
Code.gitea.io/gitea Source Repository REPOSITORY
https://github.com/go-gitea/gitea/pull/31200
Security Fix Commit FIX COMMIT
https://github.com/go-gitea/gitea/commit/b6280f4d21309cfae7cc07f74173354c664d5e10
blog.gitea.com/release-of-1.22.1 WEB
https://blog.gitea.com/release-of-1.22.1
Code.gitea.io/gitea Source Repository REPOSITORY
https://github.com/go-gitea/gitea
pkg.go.dev/vuln/go-2024-3056 WEB
https://pkg.go.dev/vuln/GO-2024-3056

Frequently Asked Questions

What is CVE-2024-6886?
CVE-2024-6886 is a security vulnerability in Code.gitea.io/gitea involving Gitea Cross-site Scripting Vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Code.gitea.io/gitea versions are affected?
Affected versions include releases prior to 1.22.1 across affected packages: code.gitea.io/gitea.
What version fixes CVE-2024-6886?
Upgrading to 1.22.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is code.gitea.io/gitea affected?
Yes, code.gitea.io/gitea is affected in releases prior to 1.22.1. Upgrade your dependency to 1.22.1 or later.
What is the CVSS score of CVE-2024-6886?
CVE-2024-6886 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2024-6886?
CVE-2024-6886 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Go dependencies for CVE-2024-6886?
Run the dependency tree command: 'inspect dependencies for code.gitea.io/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-4h4p-553m-46qh",
  "modified" : "2024-08-07T19:41:38Z",
  "published" : "2024-08-06T06:30:36Z",
  "aliases" : [ "CVE-2024-6886" ],
  "summary" : "Gitea Cross-site Scripting Vulnerability",
  "details" : "Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea Gitea Open Source Git Server allows Stored XSS.This issue affects Gitea Open Source Git Server: 1.22.0.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "code.gitea.io/gitea"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.22.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-6886"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-gitea/gitea/pull/31200"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-gitea/gitea/commit/b6280f4d21309cfae7cc07f74173354c664d5e10"
  }, {
    "type" : "WEB",
    "url" : "https://blog.gitea.com/release-of-1.22.1"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/go-gitea/gitea"
  }, {
    "type" : "WEB",
    "url" : "https://pkg.go.dev/vuln/GO-2024-3056"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-08-06T14:31:01Z",
    "nvd_published_at" : "2024-08-06T04:16:46Z"
  }
}