CVE-2026-25718: Code.gitea.io/gitea Gitea Template Repository Generation Follows Vulnerability

CRITICAL
Advisory Identifier: GHSA-h697-89cp-24q8
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CVSS 9.1
CWE-59
Published
Advisory Summary

CVE-2026-25718 is a CRITICAL (CVSS 9.1) gitea template repository generation follows vulnerability (CWE-59: Improper Link Resolution Before File Access ('Link Following')) affecting Code.gitea.io/gitea libraries in the Go ecosystem. The issue involves gitea template repository generation follows unsafe filesystem paths. Remediation is available by upgrading affected packages to version 1.25.5.

CVE-2026-25718 at a Glance

CVE Identifier CVE-2026-25718
GHSA Identifier GHSA-h697-89cp-24q8
Severity CRITICAL
CVSS v3.1 Base Score 9.1
CWE Classification CWE-59: Improper Link Resolution Before File Access ('Link Following')
Affected Product Code.gitea.io/gitea
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 9.1

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:N).

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 None (A:N)

How to Fix CVE-2026-25718

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: 1.25.5 
Upgrade code.gitea.io/gitea to 1.25.5
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-2026-25718, 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 1.25.5), 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-59: Improper Link Resolution Before File Access ('Link Following'), where the product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. 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

Gitea versions before 1.25.5 mishandle path resolution during template repository generation, allowing template processing to read or write through symlinked or otherwise non-regular paths.

CVE-2026-25718 Affected Code.gitea.io/gitea Versions

1 component(s)
Fixed Versions:
1.25.5
Product / Package Ecosystem Affected Versions Fixed Version
code.gitea.io/gitea
golang/code.gitea.io/gitea
Go
< 1.25.5
1.25.5

References

NVD — CVE-2026-25718 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-25718
Code.gitea.io/gitea Source Repository REPOSITORY
https://github.com/go-gitea/gitea/pull/36734
Code.gitea.io/gitea Source Repository REPOSITORY
https://github.com/go-gitea/gitea/pull/36746
Security Fix Commit FIX COMMIT
https://github.com/go-gitea/gitea/commit/2176e84ab977011ff2bc3f3a9066020cc674f6b1
Security Fix Commit FIX COMMIT
https://github.com/go-gitea/gitea/commit/579615936c1ef7ba16c8887b9d12ade4c44f78fa
blog.gitea.com/release-of-1.25.5 WEB
https://blog.gitea.com/release-of-1.25.5
Code.gitea.io/gitea Source Repository REPOSITORY
https://github.com/go-gitea/gitea
Code.gitea.io/gitea Release RELEASE
https://github.com/go-gitea/gitea/releases/tag/v1.25.5

Frequently Asked Questions

What is CVE-2026-25718?
CVE-2026-25718 is a security vulnerability in Code.gitea.io/gitea involving Gitea template repository generation follows unsafe filesystem paths under CWE-59: Improper Link Resolution Before File Access ('Link Following').
Which Code.gitea.io/gitea versions are affected?
Affected versions include releases prior to 1.25.5 across affected packages: code.gitea.io/gitea.
What version fixes CVE-2026-25718?
Upgrading to 1.25.5 (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 1.25.5. Upgrade your dependency to 1.25.5 or later.
What is the CVSS score of CVE-2026-25718?
CVE-2026-25718 has a CVSS v3.1 base score of 9.1 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2026-25718?
CVE-2026-25718 is classified under CWE-59: Improper Link Resolution Before File Access ('Link Following') (The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.).
How can I check Go dependencies for CVE-2026-25718?
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-h697-89cp-24q8",
  "modified" : "2026-09-01T17:19:34Z",
  "published" : "2026-07-03T21:31:37Z",
  "aliases" : [ "CVE-2026-25718" ],
  "summary" : "Gitea template repository generation follows unsafe filesystem paths",
  "details" : "Gitea versions before 1.25.5 mishandle path resolution during template repository generation, allowing template processing to read or write through symlinked or otherwise non-regular paths.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "code.gitea.io/gitea"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.25.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-25718"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-gitea/gitea/pull/36734"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-gitea/gitea/pull/36746"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-gitea/gitea/commit/2176e84ab977011ff2bc3f3a9066020cc674f6b1"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-gitea/gitea/commit/579615936c1ef7ba16c8887b9d12ade4c44f78fa"
  }, {
    "type" : "WEB",
    "url" : "https://blog.gitea.com/release-of-1.25.5"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/go-gitea/gitea"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-gitea/gitea/releases/tag/v1.25.5"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-59" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-01T17:19:34Z",
    "nvd_published_at" : "2026-07-03T21:16:57Z"
  }
}