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Vulnerability details: VCID-14bs-knss-c7e2
Vulnerability ID VCID-14bs-knss-c7e2
Aliases CVE-2026-42052
GHSA-3gxm-wfjx-m847
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2026-42052
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2026-42052
epss 0.00067 https://api.first.org/data/v1/epss?cve=CVE-2026-42052
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-3gxm-wfjx-m847
cvssv4 6.0 https://github.com/beetbox/beets
generic_textual MODERATE https://github.com/beetbox/beets
cvssv4 6 https://github.com/beetbox/beets/releases/tag/v2.10.0
cvssv4 6.0 https://github.com/beetbox/beets/releases/tag/v2.10.0
generic_textual MODERATE https://github.com/beetbox/beets/releases/tag/v2.10.0
ssvc Track https://github.com/beetbox/beets/releases/tag/v2.10.0
cvssv3.1_qr MODERATE https://github.com/beetbox/beets/security/advisories/GHSA-3gxm-wfjx-m847
cvssv4 6 https://github.com/beetbox/beets/security/advisories/GHSA-3gxm-wfjx-m847
cvssv4 6.0 https://github.com/beetbox/beets/security/advisories/GHSA-3gxm-wfjx-m847
generic_textual MODERATE https://github.com/beetbox/beets/security/advisories/GHSA-3gxm-wfjx-m847
ssvc Track https://github.com/beetbox/beets/security/advisories/GHSA-3gxm-wfjx-m847
cvssv4 6.0 https://nvd.nist.gov/vuln/detail/CVE-2026-42052
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2026-42052
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-42052
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-42052
https://github.com/beetbox/beets
https://nvd.nist.gov/vuln/detail/CVE-2026-42052
1135779 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1135779
GHSA-3gxm-wfjx-m847 https://github.com/advisories/GHSA-3gxm-wfjx-m847
GHSA-3gxm-wfjx-m847 https://github.com/beetbox/beets/security/advisories/GHSA-3gxm-wfjx-m847
v2.10.0 https://github.com/beetbox/beets/releases/tag/v2.10.0
No exploits are available.
Vector: 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Found at https://github.com/beetbox/beets
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: 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 Found at https://github.com/beetbox/beets/releases/tag/v2.10.0
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

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Vector: 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Found at https://github.com/beetbox/beets/releases/tag/v2.10.0
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

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present

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passive

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-05T13:07:05Z/ Found at https://github.com/beetbox/beets/releases/tag/v2.10.0
Vector: 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 Found at https://github.com/beetbox/beets/security/advisories/GHSA-3gxm-wfjx-m847
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

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present

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passive

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Vector: 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Found at https://github.com/beetbox/beets/security/advisories/GHSA-3gxm-wfjx-m847
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

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passive

active

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-05-05T13:07:05Z/ Found at https://github.com/beetbox/beets/security/advisories/GHSA-3gxm-wfjx-m847
Vector: 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Found at https://nvd.nist.gov/vuln/detail/CVE-2026-42052
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

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none

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Exploit Prediction Scoring System (EPSS)
Percentile 0.20989
EPSS Score 0.00067
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:44:17.490064+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/42xxx/CVE-2026-42052.json 38.6.0