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Vulnerability Instance

Lookup for vulnerabilities affecting packages.

Vulnerability_idVCID-pay9-phaz-bbde
Summary
Ruby WEBrick read_headers method can lead to HTTP Request/Response Smuggling
Ruby WEBrick read_header HTTP Request Smuggling Vulnerability. This vulnerability allows remote attackers to smuggle arbitrary HTTP requests on affected installations of Ruby WEBrick. This issue is exploitable when the product is deployed behind an HTTP proxy that fulfills specific conditions.

The specific flaw exists within the read_headers method. The issue results from the inconsistent parsing of terminators of HTTP headers. An attacker can leverage this vulnerability to smuggle arbitrary HTTP requests. Was ZDI-CAN-21876.
Aliases
0
alias CVE-2025-6442
1
alias GHSA-r995-q44h-hr64
Fixed_packages
0
url pkg:deb/debian/ruby-webrick@1.9.1-1?distro=trixie
purl pkg:deb/debian/ruby-webrick@1.9.1-1?distro=trixie
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/ruby-webrick@1.9.1-1%3Fdistro=trixie
1
url pkg:deb/debian/ruby-webrick@1.9.1-1
purl pkg:deb/debian/ruby-webrick@1.9.1-1
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/ruby-webrick@1.9.1-1
2
url pkg:deb/debian/ruby-webrick@1.9.2-1?distro=trixie
purl pkg:deb/debian/ruby-webrick@1.9.2-1?distro=trixie
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/ruby-webrick@1.9.2-1%3Fdistro=trixie
3
url pkg:gem/webrick@1.8.2
purl pkg:gem/webrick@1.8.2
is_vulnerable false
affected_by_vulnerabilities
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.8.2
Affected_packages
0
url pkg:deb/debian/ruby-webrick@1.8.1-1
purl pkg:deb/debian/ruby-webrick@1.8.1-1
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-3wgz-s6g4-n3fk
1
vulnerability VCID-pay9-phaz-bbde
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/ruby-webrick@1.8.1-1
1
url pkg:deb/debian/ruby-webrick@1.8.1-1?distro=trixie
purl pkg:deb/debian/ruby-webrick@1.8.1-1?distro=trixie
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-3wgz-s6g4-n3fk
1
vulnerability VCID-pay9-phaz-bbde
resource_url http://public2.vulnerablecode.io/packages/pkg:deb/debian/ruby-webrick@1.8.1-1%3Fdistro=trixie
2
url pkg:gem/webrick@1.3.1
purl pkg:gem/webrick@1.3.1
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-3wgz-s6g4-n3fk
1
vulnerability VCID-91b7-xx8t-rqhr
2
vulnerability VCID-bv9s-j5yk-m3aw
3
vulnerability VCID-pay9-phaz-bbde
4
vulnerability VCID-vcz9-dvf4-47am
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.3.1
3
url pkg:gem/webrick@1.4.0.beta1
purl pkg:gem/webrick@1.4.0.beta1
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-3wgz-s6g4-n3fk
1
vulnerability VCID-91b7-xx8t-rqhr
2
vulnerability VCID-bv9s-j5yk-m3aw
3
vulnerability VCID-pay9-phaz-bbde
4
vulnerability VCID-vcz9-dvf4-47am
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.4.0.beta1
4
url pkg:gem/webrick@1.4.0
purl pkg:gem/webrick@1.4.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-3wgz-s6g4-n3fk
1
vulnerability VCID-pay9-phaz-bbde
2
vulnerability VCID-vcz9-dvf4-47am
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.4.0
5
url pkg:gem/webrick@1.4.1
purl pkg:gem/webrick@1.4.1
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-3wgz-s6g4-n3fk
1
vulnerability VCID-pay9-phaz-bbde
2
vulnerability VCID-vcz9-dvf4-47am
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.4.1
6
url pkg:gem/webrick@1.4.2
purl pkg:gem/webrick@1.4.2
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-3wgz-s6g4-n3fk
1
vulnerability VCID-pay9-phaz-bbde
2
vulnerability VCID-vcz9-dvf4-47am
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.4.2
7
url pkg:gem/webrick@1.4.3
purl pkg:gem/webrick@1.4.3
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-3wgz-s6g4-n3fk
1
vulnerability VCID-pay9-phaz-bbde
2
vulnerability VCID-vcz9-dvf4-47am
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.4.3
8
url pkg:gem/webrick@1.4.4
purl pkg:gem/webrick@1.4.4
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-3wgz-s6g4-n3fk
1
vulnerability VCID-pay9-phaz-bbde
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.4.4
9
url pkg:gem/webrick@1.5.0
purl pkg:gem/webrick@1.5.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-3wgz-s6g4-n3fk
1
vulnerability VCID-pay9-phaz-bbde
2
vulnerability VCID-vcz9-dvf4-47am
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.5.0
10
url pkg:gem/webrick@1.5.1
purl pkg:gem/webrick@1.5.1
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-3wgz-s6g4-n3fk
1
vulnerability VCID-pay9-phaz-bbde
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.5.1
11
url pkg:gem/webrick@1.6.0
purl pkg:gem/webrick@1.6.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-3wgz-s6g4-n3fk
1
vulnerability VCID-pay9-phaz-bbde
2
vulnerability VCID-vcz9-dvf4-47am
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.6.0
12
url pkg:gem/webrick@1.6.1
purl pkg:gem/webrick@1.6.1
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-3wgz-s6g4-n3fk
1
vulnerability VCID-pay9-phaz-bbde
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.6.1
13
url pkg:gem/webrick@1.7.0
purl pkg:gem/webrick@1.7.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-3wgz-s6g4-n3fk
1
vulnerability VCID-pay9-phaz-bbde
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.7.0
14
url pkg:gem/webrick@1.8.0
purl pkg:gem/webrick@1.8.0
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-3wgz-s6g4-n3fk
1
vulnerability VCID-pay9-phaz-bbde
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.8.0
15
url pkg:gem/webrick@1.8.1
purl pkg:gem/webrick@1.8.1
is_vulnerable true
affected_by_vulnerabilities
0
vulnerability VCID-3wgz-s6g4-n3fk
1
vulnerability VCID-pay9-phaz-bbde
resource_url http://public2.vulnerablecode.io/packages/pkg:gem/webrick@1.8.1
References
0
reference_url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-6442.json
reference_id
reference_type
scores
0
value 6.5
scoring_system cvssv3
scoring_elements CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
url https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-6442.json
1
reference_url https://api.first.org/data/v1/epss?cve=CVE-2025-6442
reference_id
reference_type
scores
0
value 0.00074
scoring_system epss
scoring_elements 0.22414
published_at 2026-04-18T12:55:00Z
1
value 0.00074
scoring_system epss
scoring_elements 0.22417
published_at 2026-04-16T12:55:00Z
2
value 0.00074
scoring_system epss
scoring_elements 0.22399
published_at 2026-04-13T12:55:00Z
3
value 0.00074
scoring_system epss
scoring_elements 0.22454
published_at 2026-04-12T12:55:00Z
4
value 0.00074
scoring_system epss
scoring_elements 0.22551
published_at 2026-04-04T12:55:00Z
5
value 0.00074
scoring_system epss
scoring_elements 0.22495
published_at 2026-04-11T12:55:00Z
6
value 0.00074
scoring_system epss
scoring_elements 0.22476
published_at 2026-04-09T12:55:00Z
7
value 0.00074
scoring_system epss
scoring_elements 0.22508
published_at 2026-04-02T12:55:00Z
8
value 0.00074
scoring_system epss
scoring_elements 0.22421
published_at 2026-04-08T12:55:00Z
9
value 0.00074
scoring_system epss
scoring_elements 0.2234
published_at 2026-04-07T12:55:00Z
url https://api.first.org/data/v1/epss?cve=CVE-2025-6442
2
reference_url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
reference_id
reference_type
scores
0
value 6.5
scoring_system cvssv3.1
scoring_elements CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
url https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
3
reference_url https://github.com/advisories/GHSA-r995-q44h-hr64
reference_id
reference_type
scores
0
value 6.5
scoring_system cvssv3
scoring_elements
1
value MODERATE
scoring_system cvssv3.1_qr
scoring_elements
url https://github.com/advisories/GHSA-r995-q44h-hr64
4
reference_url https://github.com/rubysec/ruby-advisory-db/blob/master/gems/webrick/CVE-2025-6442.yml
reference_id
reference_type
scores
0
value 6.5
scoring_system cvssv3.1
scoring_elements CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/rubysec/ruby-advisory-db/blob/master/gems/webrick/CVE-2025-6442.yml
5
reference_url https://github.com/ruby/webrick
reference_id
reference_type
scores
0
value 6.5
scoring_system cvssv3.1
scoring_elements CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://github.com/ruby/webrick
6
reference_url https://github.com/ruby/webrick/commit/ee60354bcb84ec33b9245e1d1aa6e1f7e8132101#diff-ad02984d873efb089aa51551bc6b7d307a53e0ba1ac439e91d69c2e58a478864
reference_id
reference_type
scores
0
value 6.5
scoring_system cvssv3
scoring_elements CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
1
value 6.5
scoring_system cvssv3.1
scoring_elements CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
2
value MODERATE
scoring_system generic_textual
scoring_elements
3
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-25T20:41:55Z/
url https://github.com/ruby/webrick/commit/ee60354bcb84ec33b9245e1d1aa6e1f7e8132101#diff-ad02984d873efb089aa51551bc6b7d307a53e0ba1ac439e91d69c2e58a478864
7
reference_url https://nvd.nist.gov/vuln/detail/CVE-2025-6442
reference_id
reference_type
scores
0
value 6.5
scoring_system cvssv3.1
scoring_elements CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://nvd.nist.gov/vuln/detail/CVE-2025-6442
8
reference_url https://www.zerodayinitiative.com/advisories/ZDI-25-414
reference_id
reference_type
scores
0
value 6.5
scoring_system cvssv3.1
scoring_elements CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
1
value MODERATE
scoring_system generic_textual
scoring_elements
url https://www.zerodayinitiative.com/advisories/ZDI-25-414
9
reference_url https://bugzilla.redhat.com/show_bug.cgi?id=2374895
reference_id 2374895
reference_type
scores
url https://bugzilla.redhat.com/show_bug.cgi?id=2374895
10
reference_url https://usn.ubuntu.com/7709-1/
reference_id USN-7709-1
reference_type
scores
url https://usn.ubuntu.com/7709-1/
11
reference_url https://usn.ubuntu.com/7840-1/
reference_id USN-7840-1
reference_type
scores
url https://usn.ubuntu.com/7840-1/
12
reference_url https://www.zerodayinitiative.com/advisories/ZDI-25-414/
reference_id ZDI-25-414
reference_type
scores
0
value 6.5
scoring_system cvssv3
scoring_elements CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
1
value Track
scoring_system ssvc
scoring_elements SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-06-25T20:41:55Z/
url https://www.zerodayinitiative.com/advisories/ZDI-25-414/
Weaknesses
0
cwe_id 444
name Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
description The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.
1
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.
2
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 - 6.9
Exploitability0.5
Weighted_severity6.2
Risk_score3.1
Resource_urlhttp://public2.vulnerablecode.io/vulnerabilities/VCID-pay9-phaz-bbde