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CVE-2026-43920

FOSSBilling is a free, open-source billing and client management system. In versions 0.5.4 through 0.7.2, the /run-patcher maintenance endpoint in FOSSBilling was accessible without authentication, which allowed unauthenticated remote users to trigger update patch routines that modify configuration files, execute database schema changes, perform filesystem mutations, and clear caches. The /run-patcher endpoint executes privileged maintenance operations - configuration migrations, database patch
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2fe3b08d2382d67871dc6e9e5ffd7033329458d0edb66c5f29a96c3457b3f571
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":">= 0.5.4, < 0.8.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b37ab27a6a2b40c11ba2dcce4b26ff8b1960a2ab444eb58e42279c30e7446fb3 · sha256:059f5369e439d5c5… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b37ab27a6a2b40c11ba2dcce4b26ff8b1960a2ab444eb58e42279c30e7446fb3 · sha256:059f5369e439d5c5… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-306","description":"CWE-306: Missing Authentication for Critical Function","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b37ab27a6a2b40c11ba2dcce4b26ff8b1960a2ab444eb58e42279c30e7446fb3 · sha256:059f5369e439d5c5… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/FOSSBilling/FOSSBilling/releases/tag/0.8.0","tags":["x_refsource_MISC"],"url":"https://github.com/FOSSBilling/FOSSBilling/releases/tag/0.8.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b37ab27a6a2b40c11ba2dcce4b26ff8b1960a2ab444eb58e42279c30e7446fb3 · sha256:059f5369e439d5c5… · /containers/cna/references/1
{"name":"https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-prx6-m547-rfmg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-prx6-m547-rfmg"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b37ab27a6a2b40c11ba2dcce4b26ff8b1960a2ab444eb58e42279c30e7446fb3 · sha256:059f5369e439d5c5… · /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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