CVE Explorer

CVE-2026-31893

Tunnelblick is an open source graphic user interface for OpenVPN on macOS. In versions 3.3beta26 through 9.0beta01, any local user can read arbitrary root-owned files by exploiting a symlink following vulnerability in tunnelblick-helper, reachable through the world-accessible tunnelblickd Unix socket. The socket is configured with mode 0666, allowing any local user to connect. No authorization check is performed on the connecting client. The tunnelblick-helper process constructs a path to config

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2b91f79f11ced869f76f1636003a1a8c8169752caf8fbfe3765c8ac4ca54013a

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"Tunnelblick","vendor":"Tunnelblick","versions":[{"status":"affected","version":">= 3.3beta26, < 9.0beta02"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:e258a6214aa74ee4d688353565dec5c29cff8a6c93f8e32ef3a1aa1deb8fdbbc · sha256:9bdf4753e4a2d1c8… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":6.8,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:e258a6214aa74ee4d688353565dec5c29cff8a6c93f8e32ef3a1aa1deb8fdbbc · sha256:9bdf4753e4a2d1c8… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-61","description":"CWE-61: UNIX Symbolic Link (Symlink) Following","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:e258a6214aa74ee4d688353565dec5c29cff8a6c93f8e32ef3a1aa1deb8fdbbc · sha256:9bdf4753e4a2d1c8… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/Tunnelblick/Tunnelblick/releases/tag/v9.0beta02","tags":["x_refsource_MISC"],"url":"https://github.com/Tunnelblick/Tunnelblick/releases/tag/v9.0beta02"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:e258a6214aa74ee4d688353565dec5c29cff8a6c93f8e32ef3a1aa1deb8fdbbc · sha256:9bdf4753e4a2d1c8… · /containers/cna/references/1

{"name":"https://github.com/Tunnelblick/Tunnelblick/security/advisories/GHSA-927j-vcjf-hq69","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Tunnelblick/Tunnelblick/security/advisories/GHSA-927j-vcjf-hq69"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:e258a6214aa74ee4d688353565dec5c29cff8a6c93f8e32ef3a1aa1deb8fdbbc · sha256:9bdf4753e4a2d1c8… · /containers/cna/references/0

{"tags":["exploit"],"url":"https://github.com/Tunnelblick/Tunnelblick/security/advisories/GHSA-927j-vcjf-hq69"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:e258a6214aa74ee4d688353565dec5c29cff8a6c93f8e32ef3a1aa1deb8fdbbc · sha256:9bdf4753e4a2d1c8… · /containers/adp/0/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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