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CVE-2026-53645

FOSSBilling is a free, open-source billing and client management system. Versions prior to 0.8.0 allow a low-privileged staff account to grant arbitrary module permissions to itself through the admin API, resulting in persistent privilege escalation. A staff user that only has `staff.create_and_edit_staff` can call `/api/admin/staff/permissions_update` targeting their own account and write any permission structure, bypassing the intended role-based access control boundary. Version 0.8.0 patches
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:319b82b8b5e71f8dab03d4202f5ef63b2ffa11066aa39da0ece1bb04aa01ac52
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"FOSSBilling","vendor":"FOSSBilling","versions":[{"status":"affected","version":"< 0.8.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:0d8196c4bc87e90a2902cf428231334eb9e513d1365af35e006b01cd57f869de · sha256:fe7588658de2f310… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.5,"baseSeverity":"HIGH","privilegesRequired":"LOW","subAvailabilityImpact":"LOW","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:L","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:0d8196c4bc87e90a2902cf428231334eb9e513d1365af35e006b01cd57f869de · sha256:fe7588658de2f310… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-269","description":"CWE-269: Improper Privilege Management","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:0d8196c4bc87e90a2902cf428231334eb9e513d1365af35e006b01cd57f869de · sha256:fe7588658de2f310… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-4hf7-xxxw-64rm","tags":["x_refsource_CONFIRM"],"url":"https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-4hf7-xxxw-64rm"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:0d8196c4bc87e90a2902cf428231334eb9e513d1365af35e006b01cd57f869de · sha256:fe7588658de2f310… · /containers/cna/references/0

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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