CVE Explorer
CVE-2026-39418
MaxKB is an open-source AI assistant for enterprise. In versions 2.7.1 and below, sandbox network protection can be bypassed by using socket.sendto() with the MSG_FASTOPEN flag. This allows authenticated user with tool-editing permissions to reach internal services that are explicitly blocked by the sandbox's banned hosts configuration. MaxKB's sandbox uses LD_PRELOAD to hook the connect() function and block connections to banned IPs, but Linux's sendto() with the MSG_FASTOPEN flag can establish
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"MaxKB","vendor":"1Panel-dev","versions":[{"status":"affected","version":"< 2.8.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:1dc14d79b5c58b8d8b6c5b38bf1c7827e0f2b3e474d92004c1068a1a2e517edf · sha256:a700b7df51a74bc2… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:1dc14d79b5c58b8d8b6c5b38bf1c7827e0f2b3e474d92004c1068a1a2e517edf · sha256:a700b7df51a74bc2… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:1dc14d79b5c58b8d8b6c5b38bf1c7827e0f2b3e474d92004c1068a1a2e517edf · sha256:a700b7df51a74bc2… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"https://github.com/1Panel-dev/MaxKB/commit/4d06362750b15390437f1d2e4d14ec79baef8559","tags":["x_refsource_MISC"],"url":"https://github.com/1Panel-dev/MaxKB/commit/4d06362750b15390437f1d2e4d14ec79baef8559"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:1dc14d79b5c58b8d8b6c5b38bf1c7827e0f2b3e474d92004c1068a1a2e517edf · sha256:a700b7df51a74bc2… · /containers/cna/references/1
{"name":"https://github.com/1Panel-dev/MaxKB/releases/tag/v2.8.0","tags":["x_refsource_MISC"],"url":"https://github.com/1Panel-dev/MaxKB/releases/tag/v2.8.0"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:1dc14d79b5c58b8d8b6c5b38bf1c7827e0f2b3e474d92004c1068a1a2e517edf · sha256:a700b7df51a74bc2… · /containers/cna/references/2
{"name":"https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-w9g4-q3gm-6q6w","tags":["x_refsource_CONFIRM"],"url":"https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-w9g4-q3gm-6q6w"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:1dc14d79b5c58b8d8b6c5b38bf1c7827e0f2b3e474d92004c1068a1a2e517edf · sha256:a700b7df51a74bc2… · /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.