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CVE-2026-25740

captive browser, a dedicated Chrome instance to log into captive portals without messing with DNS settings. In 25.05 and earlier, when programs.captive-browser is enabled, any user of the system can run arbitrary commands with the CAP_NET_RAW capability (binding to privileged ports, spoofing localhost traffic from privileged services...). This vulnerability is fixed in 25.11 and 26.05.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:851a75bc75e6c298aded215886bbe6a7487788ca0e1b664eab0a683b71786344
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"nixpkgs","vendor":"NixOS","versions":[{"status":"affected","version":"<= 25.05"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a80206bbba2f44365d743ec9da82a177d3661bf6c70bd771f6328714e0263d0f · sha256:037321e4ffba4e6c… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":5.8,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a80206bbba2f44365d743ec9da82a177d3661bf6c70bd771f6328714e0263d0f · sha256:037321e4ffba4e6c… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-250","description":"CWE-250: Execution with Unnecessary Privileges","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a80206bbba2f44365d743ec9da82a177d3661bf6c70bd771f6328714e0263d0f · sha256:037321e4ffba4e6c… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/NixOS/nixpkgs/pull/487775","tags":["x_refsource_MISC"],"url":"https://github.com/NixOS/nixpkgs/pull/487775"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a80206bbba2f44365d743ec9da82a177d3661bf6c70bd771f6328714e0263d0f · sha256:037321e4ffba4e6c… · /containers/cna/references/1
{"name":"https://github.com/NixOS/nixpkgs/pull/487779","tags":["x_refsource_MISC"],"url":"https://github.com/NixOS/nixpkgs/pull/487779"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a80206bbba2f44365d743ec9da82a177d3661bf6c70bd771f6328714e0263d0f · sha256:037321e4ffba4e6c… · /containers/cna/references/2
{"name":"https://github.com/NixOS/nixpkgs/security/advisories/GHSA-wc3r-c66x-8xmc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/NixOS/nixpkgs/security/advisories/GHSA-wc3r-c66x-8xmc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a80206bbba2f44365d743ec9da82a177d3661bf6c70bd771f6328714e0263d0f · sha256:037321e4ffba4e6c… · /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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