CVE-2024-1934

WP Compress – Image Optimizer <= 6.11.08 - Missing Authorization to Unauthenticated CDN Modification

2024-03-21 00:00

Strategic Overview

Status: Patched in 6.11.11
Affected Plugin: WP Compress – Instant Performance & Speed Optimization
Affected Version: <= 6.11.10
CVSS: 7.5High
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2024-1934

View all WP Compress – Instant Performance & Speed Optimization vulnerabilities

At a glance

CVE-2024-1934 is a high-severity Missing Authorization vulnerability in the WP Compress WordPress plugin, affecting versions <= 6.11.10. It carries a CVSS score of 7.5 (reachable over the network; low attack complexity; high integrity impact). Exploitation requires no authentication. The issue is fixed in version 6.11.11; sites on affected versions should update now. Disclosed March 2024, reported by Krzysztof Zając.

Vulnerability Overview

The WP Compress – Image Optimizer plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'wps_local_compress::__construct' function in all versions up to, and including, 6.11.10. This makes it possible for unauthenticated attackers to reset the CDN region and set a malicious URL to deliver images.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on integrity.

CWE-862: Missing Authorization

Reaching this weakness in WP Compress <= 6.11.10 takes no account at all. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For WP Compress the fix is 6.11.11: builds <= 6.11.10 are affected, anything from 6.11.11 onward is not.

Remediation

Update to version 6.11.11, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: WP Compress 6.11.11 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-1934 https://www.wordfence.com/threat-intel/vulnerabilities/id/88a46a24-6d46-44cc-ac01-70a1c329cb51 https://nvd.nist.gov/vuln/detail/CVE-2024-1934

Related records

Same weakness class

Other vulnerabilities in WP Compress – Instant Performance & Speed Optimization

CVSS Vector

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityNone

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