CVE-2026-34577

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Source
https://cve.org/CVERecord?id=CVE-2026-34577
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34577.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-34577
Aliases
  • GHSA-mv6h-v3jg-g539
Published
2026-04-02T17:24:33.725Z
Modified
2026-07-08T08:12:57.892876042Z
Severity
  • 8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
Summary
Postiz: Unauthenticated Full-Read SSRF via /public/stream Endpoint with Trivially Bypassable Extension Check
Details

Postiz is an AI social media scheduling tool. Prior to version 2.21.3, the GET /public/stream endpoint in PublicController accepts a user-supplied url query parameter and proxies the full HTTP response back to the caller. The only validation is url.endsWith('mp4'), which is trivially bypassable by appending .mp4 as a query parameter value or URL fragment. The endpoint requires no authentication and has no SSRF protections, allowing an unauthenticated attacker to read responses from internal services, cloud metadata endpoints, and other network-internal resources. This issue has been patched in version 2.21.3.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34577.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-918"
    ]
}
References

Affected packages

Git / github.com/gitroomhq/postiz-app

Affected ranges

Type
GIT
Repo
https://github.com/gitroomhq/postiz-app
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
6f7a80f689bc46f2d0b023e4eac9e3d3ea7c2d01
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:gitroom:postiz:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.21.3"
        }
    ]
}

Affected versions

1.*
1.6.0
v0.*
v0.0.1
v1.*
v1.0.0
v1.1.0
v1.10.0
v1.10.1
v1.2.0
v1.22.1
v1.23.1
v1.23.2
v1.24.1
v1.26.1
v1.27.2
v1.28.1
v1.29.1
v1.3.0
v1.30.1
v1.31.1
v1.32.1
v1.33.1
v1.33.2
v1.34.1
v1.35.1
v1.36.1
v1.37.1
v1.37.2
v1.37.3
v1.37.4
v1.38.1
v1.38.2
v1.39.2
v1.39.3
v1.4.0
v1.40.0
v1.40.1
v1.41.0
v1.41.1
v1.43.0
v1.43.1
v1.43.2
v1.43.3
v1.43.4
v1.43.5
v1.44.1
v1.44.2
v1.45.1
v1.47.0
v1.48.1
v1.48.2
v1.48.3
v1.48.4
v1.49.0
v1.49.1
v1.5.0
v1.50.0
v1.51.0
v1.52.0
v1.52.1
v1.52.2
v1.53.0
v1.54.0
v1.54.1
v1.55.0
v1.55.1
v1.55.2
v1.55.3
v1.55.4
v1.55.5
v1.56.0
v1.57.0
v1.58.0
v1.59.0
v1.6.1
v1.6.12
v1.6.2
v1.6.4
v1.6.9
v1.60.0
v1.60.1
v1.61.0
v1.61.2
v1.62.0
v1.62.1
v1.62.2
v1.62.3
v1.63.0
v1.64.0
v1.64.1
v1.65.0
v1.65.1
v1.65.2
v1.65.3
v1.65.4
v1.65.5
v1.65.6
v1.65.7
v1.7.12
v1.8.1
v2.*
v2.0.1
v2.0.2
v2.0.3
v2.0.4
v2.0.5
v2.0.6
v2.0.7
v2.0.8
v2.1.1
v2.1.2
v2.10.0
v2.10.1
v2.11.0
v2.11.1
v2.11.3
v2.12.0
v2.12.1
v2.13.0
v2.14.0
v2.15.0
v2.15.1
v2.16.0
v2.17.0
v2.18.0
v2.19.0
v2.2.0
v2.2.1
v2.2.3
v2.2.4
v2.2.5
v2.20.0
v2.20.1
v2.20.2
v2.21.0
v2.21.1
v2.21.2
v2.3.0
v2.3.1
v2.4.0
v2.4.1
v2.4.2
v2.4.3
v2.5.0
v2.5.1
v2.5.2
v2.5.3
v2.5.4
v2.6.1
v2.6.2
v2.6.3
v2.6.4
v2.7.0
v2.8.0
v2.8.1
v2.8.2
v2.8.3
v2.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34577.json"