UBUNTU-CVE-2026-21885

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-21885
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-21885.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-21885
Upstream
Published
2026-01-09T00:00:00Z
Modified
2026-01-14T03:30:04.230483Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Miniflux 2 is an open source feed reader. Prior to version 2.2.16, Miniflux's media proxy endpoint (GET /proxy/{encodedDigest}/{encodedURL}) can be abused to perform Server-Side Request Forgery (SSRF). An authenticated user can cause Miniflux to generate a signed proxy URL for attacker-chosen media URLs embedded in feed entry content, including internal addresses (e.g., localhost, private RFC1918 ranges, or link-local metadata endpoints). Requesting the resulting /proxy/... URL makes Miniflux fetch and return the internal response. Version 2.2.16 fixes the issue.

References

Affected packages

Ubuntu:Pro:24.04:LTS / miniflux

Package

Name
miniflux
Purl
pkg:deb/ubuntu/miniflux@2.0.51-2ubuntu0.3+esm1?arch=source&distro=esm-apps/noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.0.51-1
2.0.51-2
2.0.51-2ubuntu0.1
2.0.51-2ubuntu0.2
2.0.51-2ubuntu0.2+esm1
2.0.51-2ubuntu0.3
2.0.51-2ubuntu0.3+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "miniflux",
            "binary_version": "2.0.51-2ubuntu0.3+esm1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-21885.json"

Ubuntu:25.10 / miniflux

Package

Name
miniflux
Purl
pkg:deb/ubuntu/miniflux@2.2.6-2?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.2.6-1
2.2.6-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "miniflux",
            "binary_version": "2.2.6-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-21885.json"

Ubuntu:25.04 / miniflux

Package

Name
miniflux
Purl
pkg:deb/ubuntu/miniflux@2.2.6-1?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.1.4-1
2.2.0-2
2.2.4-1
2.2.4-2
2.2.5-1
2.2.6-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "miniflux",
            "binary_version": "2.2.6-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-21885.json"