CVE Explorer

CVE-2026-53907

MCO is vulnerable to Stored Cross‑Site Scripting (XSS) via the application logo upload functionality. An attacker with the ability to change the application logo can upload a crafted SVG file containing malicious JavaScript code that is executed when the logo is rendered or opened. Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 25.3.3.1 but may also affect other versions.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:75ba8cdfd9a3af4fb123bc4fafbfa7e3c4abea94406343eb9f32e33347750090

Known exploited

Not asserted

Disputed

Stale source

Conflicts

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_v5affected
urn:baitaphish:normalized-source-record:v2:b0732e803f2474492ab01875ed8f8ff7e2f20c8fd8a4cf3651931ddf706d16e9 · sha256:25b10c1cb0984ed5… · /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":4.8,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"HIGH","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact…

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:b0732e803f2474492ab01875ed8f8ff7e2f20c8fd8a4cf3651931ddf706d16e9 · sha256:25b10c1cb0984ed5… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:b0732e803f2474492ab01875ed8f8ff7e2f20c8fd8a4cf3651931ddf706d16e9 · sha256:25b10c1cb0984ed5… · /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_v5reference
urn:baitaphish:normalized-source-record:v2:b0732e803f2474492ab01875ed8f8ff7e2f20c8fd8a4cf3651931ddf706d16e9 · sha256:25b10c1cb0984ed5… · /containers/cna/references/0

{"tags":["product"],"url":"https://mco.mycomplianceoffice.com/"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b0732e803f2474492ab01875ed8f8ff7e2f20c8fd8a4cf3651931ddf706d16e9 · sha256:25b10c1cb0984ed5… · /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.

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