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Vulnerability details: VCID-9eux-3fc7-13gr
Vulnerability ID VCID-9eux-3fc7-13gr
Aliases CVE-2019-15587
GHSA-c3gv-9cxf-6f57
Summary Loofah XSS Vulnerability In the Loofah gem, through v2.3.0, unsanitized JavaScript may occur in sanitized output when a crafted SVG element is republished.
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-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 4.6 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-15587.json
epss 0.00728 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
epss 0.00728 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
epss 0.00728 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
epss 0.01934 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
epss 0.01934 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
epss 0.01934 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
epss 0.01934 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
epss 0.01934 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
epss 0.01934 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
epss 0.01934 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
epss 0.01934 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
epss 0.01934 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
epss 0.01934 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
epss 0.01934 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
epss 0.01934 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
epss 0.01934 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
epss 0.01934 https://api.first.org/data/v1/epss?cve=CVE-2019-15587
cvssv3 6.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-c3gv-9cxf-6f57
cvssv3.1 5.4 https://github.com/flavorjones/loofah
generic_textual MODERATE https://github.com/flavorjones/loofah
cvssv3.1 5.4 https://github.com/flavorjones/loofah/commit/0c6617af440879ce97440f6eb6c58636456dc8ec
generic_textual MODERATE https://github.com/flavorjones/loofah/commit/0c6617af440879ce97440f6eb6c58636456dc8ec
cvssv3 6.4 https://github.com/flavorjones/loofah/issues/171
cvssv3.1 5.4 https://github.com/flavorjones/loofah/issues/171
generic_textual MODERATE https://github.com/flavorjones/loofah/issues/171
cvssv3.1 5.4 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/loofah/CVE-2019-15587.yml
generic_textual MODERATE https://github.com/rubysec/ruby-advisory-db/blob/master/gems/loofah/CVE-2019-15587.yml
cvssv3.1 5.4 https://hackerone.com/reports/709009
generic_textual MODERATE https://hackerone.com/reports/709009
cvssv3.1 5.4 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4WK2UG7ORKRQOJ6E4XJ2NVIHYJES6BYZ
generic_textual MODERATE https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4WK2UG7ORKRQOJ6E4XJ2NVIHYJES6BYZ
cvssv3.1 5.4 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XMCWPLYPNIWYAY443IZZJ4IHBBLIHBP5
generic_textual MODERATE https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XMCWPLYPNIWYAY443IZZJ4IHBBLIHBP5
cvssv2 3.5 https://nvd.nist.gov/vuln/detail/CVE-2019-15587
cvssv3.1 5.4 https://nvd.nist.gov/vuln/detail/CVE-2019-15587
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2019-15587
cvssv3.1 5.4 https://security.netapp.com/advisory/ntap-20191122-0003
generic_textual MODERATE https://security.netapp.com/advisory/ntap-20191122-0003
cvssv3.1 5.4 https://usn.ubuntu.com/4498-1
generic_textual MODERATE https://usn.ubuntu.com/4498-1
cvssv3.1 5.4 https://www.debian.org/security/2019/dsa-4554
generic_textual MODERATE https://www.debian.org/security/2019/dsa-4554
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-15587.json
https://api.first.org/data/v1/epss?cve=CVE-2019-15587
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15587
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/flavorjones/loofah
https://github.com/flavorjones/loofah/commit/0c6617af440879ce97440f6eb6c58636456dc8ec
https://github.com/flavorjones/loofah/issues/171
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/loofah/CVE-2019-15587.yml
https://hackerone.com/reports/709009
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4WK2UG7ORKRQOJ6E4XJ2NVIHYJES6BYZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XMCWPLYPNIWYAY443IZZJ4IHBBLIHBP5/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4WK2UG7ORKRQOJ6E4XJ2NVIHYJES6BYZ
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4WK2UG7ORKRQOJ6E4XJ2NVIHYJES6BYZ/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XMCWPLYPNIWYAY443IZZJ4IHBBLIHBP5
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XMCWPLYPNIWYAY443IZZJ4IHBBLIHBP5/
https://nvd.nist.gov/vuln/detail/CVE-2019-15587
https://security.netapp.com/advisory/ntap-20191122-0003
https://security.netapp.com/advisory/ntap-20191122-0003/
https://usn.ubuntu.com/4498-1
https://www.debian.org/security/2019/dsa-4554
1774081 https://bugzilla.redhat.com/show_bug.cgi?id=1774081
942894 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=942894
cpe:2.3:a:loofah_project:loofah:*:*:*:*:*:ruby:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:loofah_project:loofah:*:*:*:*:*:ruby:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
GHSA-c3gv-9cxf-6f57 https://github.com/advisories/GHSA-c3gv-9cxf-6f57
USN-4498-1 https://usn.ubuntu.com/4498-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-15587.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/flavorjones/loofah
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/flavorjones/loofah/commit/0c6617af440879ce97440f6eb6c58636456dc8ec
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/flavorjones/loofah/issues/171
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/rubysec/ruby-advisory-db/blob/master/gems/loofah/CVE-2019-15587.yml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://hackerone.com/reports/709009
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4WK2UG7ORKRQOJ6E4XJ2NVIHYJES6BYZ
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XMCWPLYPNIWYAY443IZZJ4IHBBLIHBP5
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:S/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-15587
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-15587
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://security.netapp.com/advisory/ntap-20191122-0003
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://usn.ubuntu.com/4498-1
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Found at https://www.debian.org/security/2019/dsa-4554
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.7184
EPSS Score 0.00728
Published At Aug. 1, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:05:05.136180+00:00 Ruby Importer Import https://github.com/rubysec/ruby-advisory-db/blob/master/gems/loofah/CVE-2019-15587.yml 37.0.0