CVE Explorer
CVE-2026-53908
MCO is vulnerable to User Enumeration through authentication-related functionalities. The application returns distinguishable responses for valid and invalid users during username reminder and password reset operations. An attacker can leverage these differences to enumerate valid usernames and email addresses.
Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 25.3.3.1 but may also affect other versions.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unknown","product":"MCO","vendor":"MyComplianceOffice","versions":[{"status":"affected","version":"25.3.3.1","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:c7ccc52588b0f21808890db9d941ae6ae69ef2c29232b176701a3194dcc8440e · sha256:f183d43112ba2a8c… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact"…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:c7ccc52588b0f21808890db9d941ae6ae69ef2c29232b176701a3194dcc8440e · sha256:f183d43112ba2a8c… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-204","description":"CWE-204 Observable Response Discrepancy","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:c7ccc52588b0f21808890db9d941ae6ae69ef2c29232b176701a3194dcc8440e · sha256:f183d43112ba2a8c… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"tags":["third-party-advisory"],"url":"https://cert.pl/en/posts/2026/07/CVE-2026-53902"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:c7ccc52588b0f21808890db9d941ae6ae69ef2c29232b176701a3194dcc8440e · sha256:f183d43112ba2a8c… · /containers/cna/references/0
{"tags":["product"],"url":"https://mco.mycomplianceoffice.com/"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:c7ccc52588b0f21808890db9d941ae6ae69ef2c29232b176701a3194dcc8440e · sha256:f183d43112ba2a8c… · /containers/cna/references/1
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.