CVE-2026-112845 Jory Hogeveen CVE debrief

Who should care

Defenders responsible for WordPress installations using the Off-Canvas Sidebars & Menus (Slidebars) plugin should assess exposure and prioritize remediation. This includes reviewing the current version of the plugin, updating to a patched version if necessary, and monitoring for potential malicious activity related to this vulnerability. Additionally, defenders should verify if their installations are using a vulnerable version of the plugin and take steps

Why it matters

CVE-2026-112845 is a Stored XSS vulnerability in the WordPress Off-Canvas Sidebars & Menus (Slidebars) plugin. Defenders should verify plugin versions and update as necessary to prevent potential malicious script injection.

• Attackers could inject malicious scripts into web pages viewed by other users.
• Successful exploitation could lead to unauthorized actions within the WordPress context.
• Defenders need to verify if their installations are using a vulnerable version of the plugin.
• Remediation involves updating to a patched version of the plugin.

Technical summary

The Off-Canvas Sidebars & Menus (Slidebars) plugin for WordPress is vulnerable to Stored Cross Site Scripting (XSS) in versions up to and including 0.5.9. This vulnerability allows authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts, which will execute whenever a user accesses an affected page. The vulnerability is particularly concerning as it could allow attackers to execute unauthorized actions within the WordPress context. The CVE record and source item provide details on the vulnerability, including its existence in versions up to 0.5.9 of the Off-Canvas Sidebars & Menus (Slidebars) plugin and its potential impact as a Stored XSS vulnerability.

Defensive priority

Defenders should prioritize verifying the version of the Off-Canvas Sidebars & Menus (Slidebars) plugin in use and updating to a patched version if necessary.

Recommended defensive actions

• Verify the version of the Off-Canvas Sidebars & Menus (Slidebars) plugin in use.
• Update to a patched version if necessary.
• Monitor for potential malicious activity related to this vulnerability.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and source item provide details on the vulnerability, including its existence in versions up to 0.5.9 of the Off-Canvas Sidebars & Menus (Slidebars) plugin and its potential impact as a Stored XSS vulnerability.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.