UpdraftPlus WordPress Backup Plugin: Cross-site scripting

UpdraftPlus WordPress Backup Plugin is affected by cross-site scripting. Exposure depends on how the affected operation is made reachable by the site. Injected script can execute in the affected site's origin when the vulnerable output is viewed.

CVE / CNA score 6.1 CVSS 3.1 · 134c704f-9b21-4f2e-91b3-4a467353bcc0

NVD score 6.1 CVSS 3.1 · nvd@nist.gov

Component: UpdraftPlus WordPress Backup Plugin
Plugin slug: updraftplus
Affected: See vendor advisory
Safe version: See mitigation notes
Published: Jan 03, 2022
Weakness: CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Jan 03, 2022 and is one of 13 known issues for this plugin.

What to do

Update, patch or deactivate.

Update UpdraftPlus WordPress Backup Plugin to a release outside the affected range, or disable and remove it until a fixed version is available.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The UpdraftPlus WordPress Backup Plugin WordPress plugin before 1.16.66 does not sanitise and escape the backup_timestamp and job_id parameter before outputting then back in admin pages, leading to Reflected Cross-Site Scripting issues

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

Update, patch or deactivate.

Technical description

Primary and upstream sources