The Total Upkeep WordPress plugin before version 1.17.3 contains a flaw that fails to protect the secret governing its backup‑restore feature. Because the secret is exposed to unauthenticated users, an attacker can reveal the contents of backup archives, potentially exposing highly confidential data. Additionally, the attacker can trigger a forced full site restore, which overwrites the current website files and database, leading to a denial‑of‑service effect. The vulnerability stems from a predictable or publicly discoverable cron_secret and a lack of authentication enforcement for the restore operation, classified as a combination of data‑exposure and authorization bypass weaknesses.

The affected product is the Total Upkeep plugin used within WordPress installations. Any site running Total Upkeep prior to version 1.17.3 is vulnerable. The plugin is listed as Unknown:Total Upkeep in CNA reports and there are no further vendor or product details available.

The CVSS score is 7.5, rating it high, and the vulnerability permits unauthenticated access to sensitive backup data and allows arbitrary site restoration, which constitute high‑impact consequences. The EPSS score of < 1% indicates a very low but non‑zero exploitation probability. The likely attack vector is through a direct HTTP request to the plugin’s restore endpoint, requiring no user credentials. The issue is not listed in the CISA KEV catalog. The predictable cron_secret makes the attack trivial once the endpoint is discovered, suggesting that if the secret is exposed, the exploit can be carried out with minimal effort.