CVE-2026-27969: Vitess.io/vitess Vitess Users With Backup Storage Vulnerability

CRITICAL
Advisory Identifier: GHSA-r492-hjgh-c9gw
Share
CWE-22
Published
Advisory Summary

CVE-2026-27969 is a CRITICAL vitess users with backup storage vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Vitess.io/vitess libraries in the Go ecosystem. The issue involves vitess users with backup storage access can write to arbitrary file paths on restore. Remediation is available by upgrading affected packages to version 0.23.3, 0.22.4.

CVE-2026-27969 at a Glance

CVE Identifier CVE-2026-27969
GHSA Identifier GHSA-r492-hjgh-c9gw
Severity CRITICAL
CVSS v3.1 Base Score N/A
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Vitess.io/vitess
Package Ecosystem Go
Published Date
Last Updated

How to Fix CVE-2026-27969

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

vitess.io/vitess fixed: 0.23.3 
Upgrade vitess.io/vitess to 0.23.3
vitess.io/vitess fixed: 0.22.4 
Upgrade vitess.io/vitess to 0.22.4
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 vitess.io/vitess

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-27969, inspect your project dependencies for Vitess.io/vitess:

inspect dependencies for vitess.io/vitess

Analyze the terminal output to locate any version of Vitess.io/vitess in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.23.3), 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-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Vitess.io/vitess, 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

### Impact Anyone with read/write access to the backup storage location (e.g. an S3 bucket) can manipulate backup manifest files so that files in the manifest — which may be files that they have also added to the manifest and backup contents — are written to any accessible location on restore. This is a common [Path Traversal](https://owasp.org/www-community/attacks/Path_Traversal) security issue. This can be used to provide that attacker with unintended/unauthorized access to the production deployment environment — allowing them to access information available in that environment as well as run any additional arbitrary commands there. ### Patches v23.0.3 and v22.0.4 ### Resources https://github.com/vitessio/vitess/pull/19470

CVE-2026-27969 Affected Vitess.io/vitess Versions

2 component(s)
Fixed Versions:
0.23.30.22.4
Product / Package Ecosystem Affected Versions Fixed Version
vitess.io/vitess
golang/vitess.io/vitess
Go
≥ 0.23.0-rc1
< 0.23.3
0.23.3
vitess.io/vitess
golang/vitess.io/vitess
Go
< 0.22.4
0.22.4

References

GitHub Advisory / Wiki ADVISORY
https://github.com/vitessio/vitess/security/advisories/GHSA-r492-hjgh-c9gw
NVD — CVE-2026-27969 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27969
Vitess.io/vitess Source Repository REPOSITORY
https://github.com/vitessio/vitess/pull/19470
Security Fix Commit FIX COMMIT
https://github.com/vitessio/vitess/commit/c565cab615bc962bda061dcd645aa7506c59ca4a
Vitess.io/vitess Source Repository REPOSITORY
https://github.com/vitessio/vitess
owasp.org/www-community/attac... WEB
https://owasp.org/www-community/attacks/Path_Traversal

Frequently Asked Questions

What is CVE-2026-27969?
CVE-2026-27969 is a security vulnerability in Vitess.io/vitess involving Vitess users with backup storage access can write to arbitrary file paths on restore under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Vitess.io/vitess versions are affected?
Affected versions include releases prior to 0.23.3, 0.22.4 across affected packages: vitess.io/vitess.
What version fixes CVE-2026-27969?
Upgrading to 0.23.3, 0.22.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is vitess.io/vitess affected?
Yes, vitess.io/vitess is affected in releases prior to 0.23.3, 0.22.4. Upgrade your dependency to 0.23.3, 0.22.4 or later.
What CWE is associated with CVE-2026-27969?
CVE-2026-27969 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check Go dependencies for CVE-2026-27969?
Run the dependency tree command: 'inspect dependencies for vitess.io/vitess'. 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-r492-hjgh-c9gw",
  "modified" : "2026-02-27T16:03:54Z",
  "published" : "2026-02-27T16:03:54Z",
  "aliases" : [ "CVE-2026-27969" ],
  "summary" : "Vitess users with backup storage access can write to arbitrary file paths on restore",
  "details" : "### Impact\n\nAnyone with read/write access to the backup storage location (e.g. an S3 bucket) can manipulate backup manifest files so that files in the manifest — which may be files that they have also added to the manifest and backup contents — are written to any accessible location on restore. This is a common [Path Traversal](https://owasp.org/www-community/attacks/Path_Traversal) security issue. This can be used to provide that attacker with unintended/unauthorized access to the production deployment environment — allowing them to access information available in that environment as well as run any additional arbitrary commands there.\n\n### Patches\n\nv23.0.3 and v22.0.4\n\n### Resources\n\nhttps://github.com/vitessio/vitess/pull/19470",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:L/SC:L/SI:H/SA:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "vitess.io/vitess"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.23.0-rc1"
      }, {
        "fixed" : "0.23.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "vitess.io/vitess"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.22.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/vitessio/vitess/security/advisories/GHSA-r492-hjgh-c9gw"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-27969"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vitessio/vitess/pull/19470"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vitessio/vitess/commit/c565cab615bc962bda061dcd645aa7506c59ca4a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/vitessio/vitess"
  }, {
    "type" : "WEB",
    "url" : "https://owasp.org/www-community/attacks/Path_Traversal"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-02-27T16:03:54Z",
    "nvd_published_at" : "2026-02-26T02:16:24Z"
  }
}