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CVE-2026-47657

HumHub is an Open Source Enterprise Social Network. In versions 1.13.0 through 1.18.2, a missing authorization check in the Space member management controller allowed any authenticated user to trigger the removal of all members from any Space, regardless of their own role or membership in that Space. Versions 1.13.0 through 1.18.2 are affected. The vulnerability has been patched in version 1.18.3, and all users are encouraged to upgrade to this version or later immediately. No known workaround i
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d681ee48e0d7f1cb868d13e4bd7c0ea1c3a08e48fac2ed58e7f34bec8ebb9cd1
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"humhub","vendor":"humhub","versions":[{"status":"affected","version":">= 1.13.0, < 1.18.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:729ff4dcc3087311cadaa936e019aeb7729d8f200f3b74a06472ebf8649b0e63 · sha256:376c6457209bcd28… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7.1,"baseSeverity":"HIGH","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:729ff4dcc3087311cadaa936e019aeb7729d8f200f3b74a06472ebf8649b0e63 · sha256:376c6457209bcd28… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:729ff4dcc3087311cadaa936e019aeb7729d8f200f3b74a06472ebf8649b0e63 · sha256:376c6457209bcd28… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/humhub/humhub/pull/8163","tags":["x_refsource_MISC"],"url":"https://github.com/humhub/humhub/pull/8163"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:729ff4dcc3087311cadaa936e019aeb7729d8f200f3b74a06472ebf8649b0e63 · sha256:376c6457209bcd28… · /containers/cna/references/1
{"name":"https://github.com/humhub/humhub/security/advisories/GHSA-hj67-5q6h-j7c2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/humhub/humhub/security/advisories/GHSA-hj67-5q6h-j7c2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:729ff4dcc3087311cadaa936e019aeb7729d8f200f3b74a06472ebf8649b0e63 · sha256:376c6457209bcd28… · /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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