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Vulnerability details: VCID-sqa5-8yrd-qyfz
Vulnerability ID VCID-sqa5-8yrd-qyfz
Aliases CVE-2018-8048
GHSA-x7rv-cr6v-4vm4
Summary Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') In the Loofah gem for Ruby, denylisted HTML attributes may occur in sanitized output by republishing a crafted HTML fragment.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
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
System Score Found at
cvssv3 6.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-8048.json
epss 0.00689 https://api.first.org/data/v1/epss?cve=CVE-2018-8048
epss 0.00689 https://api.first.org/data/v1/epss?cve=CVE-2018-8048
epss 0.00689 https://api.first.org/data/v1/epss?cve=CVE-2018-8048
epss 0.00689 https://api.first.org/data/v1/epss?cve=CVE-2018-8048
epss 0.00689 https://api.first.org/data/v1/epss?cve=CVE-2018-8048
epss 0.00689 https://api.first.org/data/v1/epss?cve=CVE-2018-8048
epss 0.00689 https://api.first.org/data/v1/epss?cve=CVE-2018-8048
epss 0.00689 https://api.first.org/data/v1/epss?cve=CVE-2018-8048
epss 0.00689 https://api.first.org/data/v1/epss?cve=CVE-2018-8048
cvssv3 5.4 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 6.1 https://github.com/advisories/GHSA-x7rv-cr6v-4vm4
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-x7rv-cr6v-4vm4
generic_textual MODERATE https://github.com/advisories/GHSA-x7rv-cr6v-4vm4
cvssv3.1 6.1 https://github.com/flavorjones/loofah
generic_textual MODERATE https://github.com/flavorjones/loofah
cvssv3.1 6.1 https://github.com/flavorjones/loofah/commit/f739cf8eac5851f328b8044281d6653f74eff116
generic_textual MODERATE https://github.com/flavorjones/loofah/commit/f739cf8eac5851f328b8044281d6653f74eff116
cvssv3 6.1 https://github.com/flavorjones/loofah/issues/144
cvssv3.1 6.1 https://github.com/flavorjones/loofah/issues/144
generic_textual MODERATE https://github.com/flavorjones/loofah/issues/144
cvssv3.1 6.1 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/loofah/CVE-2018-8048.yml
generic_textual MODERATE https://github.com/rubysec/ruby-advisory-db/blob/master/gems/loofah/CVE-2018-8048.yml
cvssv3.1 6.1 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2018-8048.yml
generic_textual MODERATE https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2018-8048.yml
cvssv3 6.1 https://github.com/sparklemotion/nokogiri/pull/1746
cvssv3.1 6.1 https://github.com/sparklemotion/nokogiri/pull/1746
generic_textual MODERATE https://github.com/sparklemotion/nokogiri/pull/1746
cvssv3.1 6.1 https://nvd.nist.gov/vuln/detail/CVE-2018-8048
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2018-8048
cvssv3.1 6.1 https://security.netapp.com/advisory/ntap-20191122-0003
generic_textual MODERATE https://security.netapp.com/advisory/ntap-20191122-0003
cvssv3.1 6.1 https://www.debian.org/security/2018/dsa-4171
generic_textual MODERATE https://www.debian.org/security/2018/dsa-4171
cvssv3.1 6.1 http://www.openwall.com/lists/oss-security/2018/03/19/5
generic_textual MODERATE http://www.openwall.com/lists/oss-security/2018/03/19/5
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-8048.json
https://api.first.org/data/v1/epss?cve=CVE-2018-8048
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8048
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/advisories/GHSA-x7rv-cr6v-4vm4
https://github.com/flavorjones/loofah
https://github.com/flavorjones/loofah/commit/f739cf8eac5851f328b8044281d6653f74eff116
https://github.com/flavorjones/loofah/issues/144
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/loofah/CVE-2018-8048.yml
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2018-8048.yml
https://github.com/sparklemotion/nokogiri/pull/1746
https://security.netapp.com/advisory/ntap-20191122-0003
https://security.netapp.com/advisory/ntap-20191122-0003/
https://www.debian.org/security/2018/dsa-4171
http://www.openwall.com/lists/oss-security/2018/03/19/5
1559071 https://bugzilla.redhat.com/show_bug.cgi?id=1559071
893596 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=893596
CVE-2018-8048 https://nvd.nist.gov/vuln/detail/CVE-2018-8048
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-8048.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

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unchanged

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N 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

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/advisories/GHSA-x7rv-cr6v-4vm4
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

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/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

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/flavorjones/loofah/commit/f739cf8eac5851f328b8044281d6653f74eff116
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

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required

unchanged

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/flavorjones/loofah/issues/144
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

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/rubysec/ruby-advisory-db/blob/master/gems/loofah/CVE-2018-8048.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

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unchanged

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2018-8048.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

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required

unchanged

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://github.com/sparklemotion/nokogiri/pull/1746
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

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-8048
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:N/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:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://www.debian.org/security/2018/dsa-4171
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:N/UI:R/S:C/C:L/I:L/A:N Found at http://www.openwall.com/lists/oss-security/2018/03/19/5
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

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none

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none
Exploit Prediction Scoring System (EPSS)
Percentile 0.71721
EPSS Score 0.00689
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:47:38.091752+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/gem/nokogiri/CVE-2018-8048.yml 38.0.0