Bluewave Labs Checkmate up to 2.1.0 request information exposure

Summaryinfo

A vulnerability categorized as problematic has been discovered in Bluewave Labs Checkmate up to 2.1.0. The impacted element is an unknown function of the file /api/v1/auth/recovery/request. Such manipulation leads to information exposure. This vulnerability is documented as CVE-2026-72588. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Bluewave Labs Checkmate up to 2.1.0. Affected by this issue is an unknown functionality of the file /api/v1/auth/recovery/request. The manipulation with an unknown input leads to a information exposure vulnerability. Using CWE to declare the problem leads to CWE-203. The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not. Impacted is confidentiality. CVE summarizes:

A user enumeration vulnerability in bluewave-labs/Checkmate through 2.1.0 allows an unauthenticated remote attacker to determine whether a given email address is registered. The POST /api/v1/auth/recovery/request endpoint returns HTTP 200 for registered email addresses and a different status code for unregistered ones, enabling attackers to enumerate valid user accounts.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-72588 since 08/10/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/10/2026). The MITRE ATT&CK project declares the attack technique as T1592.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Bluewave Labs

Name

• Checkmate

Version

• 2.0
• 2.1.0

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• 🔒
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CPE 2.2info

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