EUVD-2026-67728
GHSA-p96r-537r-m99j
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Unauthenticated network-reachable resource exhaustion with no complexity barrier; availability-only impact with no scope change.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
2DescriptionCVE.org
Unauthenticated Denial of Service Attack in Smush Image Compression and Optimization <= 4.2.0 versions.
AnalysisAI
Unauthenticated denial of service in Smush Image Compression and Optimization plugin (versions ≤ 4.2.0) allows any remote attacker to exhaust WordPress server resources without credentials or user interaction. The CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H vector confirms trivial, unauthenticated network exploitation with high availability impact, making every site running an affected version an easy target for sustained disruption. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions are required - the CVSS vector AV:N/AC:L/PR:N/UI:N confirms remote unauthenticated exploitation against default configurations of the Smush WordPress plugin. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.5 High score is well-supported by the vector metrics: AV:N (no network proximity required), AC:L (no special conditions or race conditions), PR:N (no account or session), UI:N (fully server-side), and A:H (full availability loss possible). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The primary remediation is to update the Smush plugin to a version beyond 4.2.0; consult the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/wp-smushit/vulnerability/wordpress-smush-image-compression-and-optimization-plugin-4-2-0-denial-of-service-attack-vulnerability for the confirmed patched release version, which was not explicitly stated in the available input data. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all WordPress installations to identify any running Smush Image Compression and Optimization versions 4.2.0 or earlier; for business-critical systems, consider temporarily disabling the plugin pending vendor resolution. …
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The Smush WordPress plugin before 3.9.9 does not sanitise and escape a configuration parameter before outputting it back
The Smush Image Compression and Optimization plugin before 2.7.6 for WordPress allows directory traversal. Rated high se
Same technique Denial Of Service
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External POC / Exploit Code
Leaving vuln.today