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CVE-2026-42052

Beets is the media library management system. Prior to version 2.10.0, the bundled web UI uses Underscore template interpolation mode <%= ... %> for untrusted metadata fields. In this runtime, <%= ... %> is raw insertion and HTML escaping is only performed by <%- ... %>. Rendered output is then inserted with .html(...), allowing attacker-controlled markup to become active DOM. This issue has been patched in version 2.10.0.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:049b8f8e4232f875c4fc270e6b86530586d79e492628f6ef582fcfe3984b0c3d
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"beets","vendor":"beetbox","versions":[{"status":"affected","version":"< 2.10.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ab67089e3112825c5aedd8c0346de5818c77d3a0dc2c9d8b7b56630020befe8f · sha256:535ead00f1eabc08… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/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:ab67089e3112825c5aedd8c0346de5818c77d3a0dc2c9d8b7b56630020befe8f · sha256:535ead00f1eabc08… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ab67089e3112825c5aedd8c0346de5818c77d3a0dc2c9d8b7b56630020befe8f · sha256:535ead00f1eabc08… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/beetbox/beets/releases/tag/v2.10.0","tags":["x_refsource_MISC"],"url":"https://github.com/beetbox/beets/releases/tag/v2.10.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ab67089e3112825c5aedd8c0346de5818c77d3a0dc2c9d8b7b56630020befe8f · sha256:535ead00f1eabc08… · /containers/cna/references/1
{"name":"https://github.com/beetbox/beets/security/advisories/GHSA-3gxm-wfjx-m847","tags":["x_refsource_CONFIRM"],"url":"https://github.com/beetbox/beets/security/advisories/GHSA-3gxm-wfjx-m847"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ab67089e3112825c5aedd8c0346de5818c77d3a0dc2c9d8b7b56630020befe8f · sha256:535ead00f1eabc08… · /containers/cna/references/0
{"url":"https://lists.debian.org/debian-lts-announce/2026/06/msg00030.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ab67089e3112825c5aedd8c0346de5818c77d3a0dc2c9d8b7b56630020befe8f · sha256:535ead00f1eabc08… · /containers/adp/1/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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