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CVE-2026-34839

Glances is an open-source system cross-platform monitoring tool. Prior to version 4.5.4, the Glances web server exposes a REST API (`/api/4/*`) that is accessible without authentication and allows cross-origin requests from any origin due to a permissive CORS policy (`Access-Control-Allow-Origin: *`). This allows a malicious website to read sensitive system information from a running Glances instance in the victim’s browser, leading to cross-origin data exfiltration. While a previous advisory ex
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:c2e143cb391966657ce0892b9df76c7d9832f579dcad53fafcdb55ac1ee041dc
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-942","description":"CWE-942: Permissive Cross-domain Policy with Untrusted Domains","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:aa211e25266ee44e05ff5adf5d796118e4225aec5c5d617563ba18c646a784f7 · sha256:3ebcfda8894a320d… · /containers/cna/problemTypes/1/descriptions/0

{"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:aa211e25266ee44e05ff5adf5d796118e4225aec5c5d617563ba18c646a784f7 · sha256:3ebcfda8894a320d… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:aa211e25266ee44e05ff5adf5d796118e4225aec5c5d617563ba18c646a784f7 · sha256:3ebcfda8894a320d… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"glances","vendor":"nicolargo","versions":[{"status":"affected","version":"< 4.5.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:aa211e25266ee44e05ff5adf5d796118e4225aec5c5d617563ba18c646a784f7 · sha256:3ebcfda8894a320d… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7.7,"baseSeverity":"HIGH","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:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:aa211e25266ee44e05ff5adf5d796118e4225aec5c5d617563ba18c646a784f7 · sha256:3ebcfda8894a320d… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

3 source assertions
{"cweId":"CWE-942","description":"CWE-942: Permissive Cross-domain Policy with Untrusted Domains","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:aa211e25266ee44e05ff5adf5d796118e4225aec5c5d617563ba18c646a784f7 · sha256:3ebcfda8894a320d… · /containers/cna/problemTypes/1/descriptions/0
{"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:aa211e25266ee44e05ff5adf5d796118e4225aec5c5d617563ba18c646a784f7 · sha256:3ebcfda8894a320d… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:aa211e25266ee44e05ff5adf5d796118e4225aec5c5d617563ba18c646a784f7 · sha256:3ebcfda8894a320d… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/nicolargo/glances/commit/fdfb977b1d91b5e410bc06c4e19f8bedb0005ce9","tags":["x_refsource_MISC"],"url":"https://github.com/nicolargo/glances/commit/fdfb977b1d91b5e410bc06c4e19f8bedb0005ce9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aa211e25266ee44e05ff5adf5d796118e4225aec5c5d617563ba18c646a784f7 · sha256:3ebcfda8894a320d… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://github.com/nicolargo/glances/security/advisories/GHSA-gfc2-9qmw-w7vh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aa211e25266ee44e05ff5adf5d796118e4225aec5c5d617563ba18c646a784f7 · sha256:3ebcfda8894a320d… · /containers/adp/0/references/0
{"name":"https://github.com/nicolargo/glances/security/advisories/GHSA-gfc2-9qmw-w7vh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nicolargo/glances/security/advisories/GHSA-gfc2-9qmw-w7vh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:aa211e25266ee44e05ff5adf5d796118e4225aec5c5d617563ba18c646a784f7 · sha256:3ebcfda8894a320d… · /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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