GHSA-vj2p-7pgw-g2wf: Postiz Postiz App Has A High-Severity Vulnerability

HIGH
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CVSS 7.5
CWE-1395 CWE-918
Published
Advisory Summary

GHSA-vj2p-7pgw-g2wf is a HIGH (CVSS 7.5) postiz app has a high-severity vulnerability (CWE-1395: Dependency on Vulnerable Third-Party Component) affecting Postiz libraries in the npm ecosystem. The issue involves postiz app has a high-severity ssrf vulnerability via next.js. Remediation is available in the latest vendor maintenance releases.

GHSA-vj2p-7pgw-g2wf at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-vj2p-7pgw-g2wf
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-1395: Dependency on Vulnerable Third-Party Component
Affected Product Postiz
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:N/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 None (I:N)
Availability None (A:N)

How to Fix GHSA-vj2p-7pgw-g2wf

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

postiz fixed: Latest secure release 
npm install postiz@Latest secure release
Verify Direct and Transitive Dependencies

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

npm ls postiz

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-vj2p-7pgw-g2wf, inspect your project dependencies using npm:

npm ls postiz

Analyze the terminal output to locate any version of Postiz in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The npm ls postiz command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-1395: Dependency on Vulnerable Third-Party Component, where the product has a dependency on a third-party component that contains one or more known vulnerabilities. In Postiz, 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 A successful SSRF attack allows an attacker to: - Bypass firewalls to scan and interact with internal network services/ports. - Access sensitive cloud metadata services (e.g., AWS IMDS 169.254.169.254) to potentially leak instance credentials. - Pivot into the internal network environment where Postiz is hosted. ### Workarounds There are no workarounds known to this, please upgrade to Postiz version `v2.21.1`.

GHSA-vj2p-7pgw-g2wf Affected Postiz Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
postiz
npm/postiz
npm
≤ 2.0.12

References

GitHub Advisory / Wiki ADVISORY
https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-vj2p-7pgw-g2wf
GitHub Advisory / Wiki ADVISORY
https://github.com/vercel/next.js/security/advisories/GHSA-fr5h-rqp8-mj6g
NVD — GHSA-vj2p-7pgw-g2wf NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-34351
Postiz Source Repository REPOSITORY
https://github.com/gitroomhq/postiz-app

Frequently Asked Questions

What is GHSA-vj2p-7pgw-g2wf?
GHSA-vj2p-7pgw-g2wf is a security vulnerability in Postiz involving Postiz App has a High-Severity SSRF Vulnerability via Next.js under CWE-1395: Dependency on Vulnerable Third-Party Component.
Which Postiz versions are affected?
Affected versions include releases prior to current release patches across affected packages: postiz.
What version fixes GHSA-vj2p-7pgw-g2wf?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is postiz affected?
Yes, postiz is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of GHSA-vj2p-7pgw-g2wf?
GHSA-vj2p-7pgw-g2wf has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with GHSA-vj2p-7pgw-g2wf?
GHSA-vj2p-7pgw-g2wf is classified under CWE-1395: Dependency on Vulnerable Third-Party Component (The product has a dependency on a third-party component that contains one or more known vulnerabilities.).
How can I check npm dependencies for GHSA-vj2p-7pgw-g2wf?
Run the dependency tree command: 'npm ls postiz'. 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-vj2p-7pgw-g2wf",
  "modified" : "2026-03-27T15:46:53Z",
  "published" : "2026-03-27T15:46:53Z",
  "aliases" : [ ],
  "summary" : "Postiz App has a High-Severity SSRF Vulnerability via Next.js",
  "details" : "### Impact\nA successful SSRF attack allows an attacker to:\n- Bypass firewalls to scan and interact with internal network services/ports.\n- Access sensitive cloud metadata services (e.g., AWS IMDS 169.254.169.254) to potentially leak instance credentials.\n- Pivot into the internal network environment where Postiz is hosted.\n\n### Workarounds\nThere are no workarounds known to this, please upgrade to Postiz version `v2.21.1`.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "postiz"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.0.12"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-vj2p-7pgw-g2wf"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vercel/next.js/security/advisories/GHSA-fr5h-rqp8-mj6g"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-34351"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/gitroomhq/postiz-app"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1395", "CWE-918" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-27T15:46:53Z",
    "nvd_published_at" : null
  }
}