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VulnerabilityPublished

CVE-2026-72588: bluewave-labs Checkmate · Observable Response Discrepancy

Affects bluewave-labs CheckmateSource CVE Database V5

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Not known to be exploited · CVSS 5.3 Medium.

Data as of 7 Nov 2026, 23:24 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 36% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
bluewave-labsCheckmateAffected
  • <=2.1.0
Fixed in–

AI-suggested

Until a fix is available, consider implementing uniform responses for password recovery requests regardless of email registration status to prevent user enumeration.

Description

CVE-2026-72588 is a user enumeration vulnerability in bluewave-labs Checkmate up to version 2.1.0. It allows unauthenticated remote attackers to determine if an email address is registered by observing different HTTP response codes from the password recovery endpoint. This discrepancy enables attackers to enumerate valid user accounts. The vulnerability has a medium severity with a CVSS score of 5.3.

References

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