CVE-2026-4057 | Download Manager <= 3.3.51 - Missing Authorization to Authenticated (Contributor+) Media File Protection Removal

The Download Manager plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `makeMediaPublic()` and `makeMediaPrivate()` functions in all versions up to, and including, 3.3.51. This is due to the functions only checking for `edit_posts` capability without verifying post ownership via `current_user_can('edit_post', $id)`, and the destructive operations executing before the admin-level check in `mediaAccessControl()`. This makes it possible for authenticated attackers, with Contributor-level access and above, to strip all protection metadata (password, access restrictions, private flag) from any media file they do not own, making admin-protected files publicly accessible via their direct URL.

Published: 2026-04-10 Last update: 2026-04-24 Assigner: [email protected] Source: [email protected]

Conclusion & alert: CVE-2026-4057 is rated Low Risk (27.6/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.37%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-4057

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.03% 0.37% +0.34%
2 2026-04-10 0.03%

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-4057

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
2.8 1.4 [email protected]

Weakness enumeration for CVE-2026-4057

Affected software / configurations for CVE-2026-4057

Vendor Product Version Raw CPE
No affected products in dataset.

References for CVE-2026-4057

URL Tags
https://plugins.trac.wordpress.org/browser/download-manager/tags/3.3.51/src/MediaLibrary/MediaAccessControl.php#L237
https://plugins.trac.wordpress.org/browser/download-manager/tags/3.3.51/src/MediaLibrary/MediaAccessControl.php#L257
https://plugins.trac.wordpress.org/browser/download-manager/trunk/src/MediaLibrary/MediaAccessControl.php#L237
https://plugins.trac.wordpress.org/browser/download-manager/trunk/src/MediaLibrary/MediaAccessControl.php#L257
https://plugins.trac.wordpress.org/changeset/3492316/download-manager/trunk/src/MediaLibrary/MediaAccessControl.php
https://plugins.trac.wordpress.org/changeset?old_path=%2Fdownload-manager/tags/3.3.51&new_path=%2Fdownload-manager/tags/3.3.52
https://www.wordfence.com/threat-intel/vulnerabilities/id/a6b02846-61be-4571-921d-53df5493f856?source=cve
cvelogic Threat Intelligence