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Vulnerability Instance

Lookup for vulnerabilities affecting packages.

Vulnerability_idVCID-8sfm-uus1-efg7
SummaryA vulnerability was determined in brikcss merge up to 1.3.0. This affects an unknown part. Executing a manipulation of the argument __proto__/constructor.prototype/prototype can lead to improperly controlled modification of object prototype attributes. The attack may be performed from remote. The vendor was contacted early about this disclosure but did not respond in any way.
Aliases
0
alias CVE-2026-6594
1
alias GHSA-3jc6-6r48-v6qf
Fixed_packages
Affected_packages
0
url pkg:npm/%40brikcss/merge@1.0.0
purl pkg:npm/%40brikcss/merge@1.0.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-8sfm-uus1-efg7
resource_url http://public2.vulnerablecode.io/packages/pkg:npm/%2540brikcss/merge@1.0.0
1
url pkg:npm/%40brikcss/merge@1.0.1
purl pkg:npm/%40brikcss/merge@1.0.1
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-8sfm-uus1-efg7
resource_url http://public2.vulnerablecode.io/packages/pkg:npm/%2540brikcss/merge@1.0.1
2
url pkg:npm/%40brikcss/merge@1.0.2
purl pkg:npm/%40brikcss/merge@1.0.2
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-8sfm-uus1-efg7
resource_url http://public2.vulnerablecode.io/packages/pkg:npm/%2540brikcss/merge@1.0.2
3
url pkg:npm/%40brikcss/merge@1.0.3
purl pkg:npm/%40brikcss/merge@1.0.3
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-8sfm-uus1-efg7
resource_url http://public2.vulnerablecode.io/packages/pkg:npm/%2540brikcss/merge@1.0.3
4
url pkg:npm/%40brikcss/merge@1.0.4
purl pkg:npm/%40brikcss/merge@1.0.4
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-8sfm-uus1-efg7
resource_url http://public2.vulnerablecode.io/packages/pkg:npm/%2540brikcss/merge@1.0.4
5
url pkg:npm/%40brikcss/merge@1.0.5
purl pkg:npm/%40brikcss/merge@1.0.5
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-8sfm-uus1-efg7
resource_url http://public2.vulnerablecode.io/packages/pkg:npm/%2540brikcss/merge@1.0.5
6
url pkg:npm/%40brikcss/merge@1.0.6
purl pkg:npm/%40brikcss/merge@1.0.6
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-8sfm-uus1-efg7
resource_url http://public2.vulnerablecode.io/packages/pkg:npm/%2540brikcss/merge@1.0.6
7
url pkg:npm/%40brikcss/merge@1.0.7
purl pkg:npm/%40brikcss/merge@1.0.7
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-8sfm-uus1-efg7
resource_url http://public2.vulnerablecode.io/packages/pkg:npm/%2540brikcss/merge@1.0.7
8
url pkg:npm/%40brikcss/merge@1.1.0
purl pkg:npm/%40brikcss/merge@1.1.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-8sfm-uus1-efg7
resource_url http://public2.vulnerablecode.io/packages/pkg:npm/%2540brikcss/merge@1.1.0
9
url pkg:npm/%40brikcss/merge@1.2.0
purl pkg:npm/%40brikcss/merge@1.2.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-8sfm-uus1-efg7
resource_url http://public2.vulnerablecode.io/packages/pkg:npm/%2540brikcss/merge@1.2.0
10
url pkg:npm/%40brikcss/merge@1.2.1
purl pkg:npm/%40brikcss/merge@1.2.1
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-8sfm-uus1-efg7
resource_url http://public2.vulnerablecode.io/packages/pkg:npm/%2540brikcss/merge@1.2.1
11
url pkg:npm/%40brikcss/merge@1.3.0
purl pkg:npm/%40brikcss/merge@1.3.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-8sfm-uus1-efg7
resource_url http://public2.vulnerablecode.io/packages/pkg:npm/%2540brikcss/merge@1.3.0
12
url pkg:npm/%40brikcss/merge@1.3.1
purl pkg:npm/%40brikcss/merge@1.3.1
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-8sfm-uus1-efg7
resource_url http://public2.vulnerablecode.io/packages/pkg:npm/%2540brikcss/merge@1.3.1
References
0
reference_url https://api.first.org/data/v1/epss?cve=CVE-2026-6594
reference_id
reference_type
scores
0
value 0.00064
scoring_system epss
scoring_elements 0.20038
published_at 2026-06-11T12:55:00Z
1
value 0.00064
scoring_system epss
scoring_elements 0.20211
published_at 2026-06-12T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2026-6594
1
reference_url https://github.com/brikcss/merge
reference_id
reference_type
scores
0
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
1
value 6.9
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
2
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/brikcss/merge
2
reference_url https://nvd.nist.gov/vuln/detail/CVE-2026-6594
reference_id
reference_type
scores
0
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
1
value 6.9
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
2
value MODERATE
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2026-6594
3
reference_url https://vuldb.com/vuln/358229
reference_id 358229
reference_type
scores
0
value 7.5
scoring_system cvssv2
scoring_elements AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:ND/RC:UR
1
value 7.3
scoring_system cvssv3
scoring_elements CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
2
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
3
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
4
value 6.9
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
5
value 6.9
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
6
value MODERATE
scoring_system generic_textual
scoring_elements
7
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-04-20T14:53:05Z/
url https://vuldb.com/vuln/358229
4
reference_url https://vuldb.com/submit/791805
reference_id 791805
reference_type
scores
0
value 7.5
scoring_system cvssv2
scoring_elements AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:ND/RC:UR
1
value 7.3
scoring_system cvssv3
scoring_elements CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
2
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
3
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
4
value 6.9
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
5
value 6.9
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
6
value MODERATE
scoring_system generic_textual
scoring_elements
7
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-04-20T14:53:05Z/
url https://vuldb.com/submit/791805
5
reference_url https://vuldb.com/vuln/358229/cti
reference_id cti
reference_type
scores
0
value 7.5
scoring_system cvssv2
scoring_elements AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:ND/RC:UR
1
value 7.3
scoring_system cvssv3
scoring_elements CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
2
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
3
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
4
value 6.9
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
5
value 6.9
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
6
value MODERATE
scoring_system generic_textual
scoring_elements
7
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-04-20T14:53:05Z/
url https://vuldb.com/vuln/358229/cti
6
reference_url https://github.com/advisories/GHSA-3jc6-6r48-v6qf
reference_id GHSA-3jc6-6r48-v6qf
reference_type
scores
0
value MODERATE
scoring_system cvssv3.1_qr
scoring_elements
url https://github.com/advisories/GHSA-3jc6-6r48-v6qf
7
reference_url https://github.com/sudo-secure/security-research/blob/main/brikcss-merge/prototype-pollution/PoC.md
reference_id PoC.md
reference_type
scores
0
value 7.5
scoring_system cvssv2
scoring_elements AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:ND/RC:UR
1
value 7.3
scoring_system cvssv3
scoring_elements CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
2
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
3
value 7.3
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
4
value 6.9
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
5
value 6.9
scoring_system cvssv4
scoring_elements CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
6
value MODERATE
scoring_system generic_textual
scoring_elements
7
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2026-04-20T14:53:05Z/
url https://github.com/sudo-secure/security-research/blob/main/brikcss-merge/prototype-pollution/PoC.md
Weaknesses
0
cwe_id 94
name Improper Control of Generation of Code ('Code Injection')
description The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
1
cwe_id 1321
name Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
description The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.
2
cwe_id 937
name OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
description Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2013.
3
cwe_id 1035
name OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
description Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017.
Exploits
Severity_range_score4.0 - 7.5
Exploitability0.5
Weighted_severity6.8
Risk_score3.4
Resource_urlhttp://public2.vulnerablecode.io/vulnerabilities/VCID-8sfm-uus1-efg7