Staging Environment: Content and features may be unstable or change without notice.
Search for vulnerabilities
Vulnerability details: VCID-2e2u-nvuu-kfbs
Vulnerability ID VCID-2e2u-nvuu-kfbs
Aliases CVE-2017-7559
GHSA-rj76-h87p-r3wf
Summary Inconsistent Interpretation of HTTP Requests (HTTP Request Smuggling) Invalid characters are allowed in query strings and path parameters. This could be exploited, in conjunction with a proxy that also permitted the invalid characters but with a different interpretation, to inject data into the HTTP response. By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack, or obtain sensitive information from requests other than their own.
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-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 6.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7559.json
epss 0.01128 https://api.first.org/data/v1/epss?cve=CVE-2017-7559
epss 0.01128 https://api.first.org/data/v1/epss?cve=CVE-2017-7559
epss 0.01128 https://api.first.org/data/v1/epss?cve=CVE-2017-7559
epss 0.01128 https://api.first.org/data/v1/epss?cve=CVE-2017-7559
epss 0.01128 https://api.first.org/data/v1/epss?cve=CVE-2017-7559
epss 0.01128 https://api.first.org/data/v1/epss?cve=CVE-2017-7559
epss 0.01128 https://api.first.org/data/v1/epss?cve=CVE-2017-7559
epss 0.01128 https://api.first.org/data/v1/epss?cve=CVE-2017-7559
epss 0.01128 https://api.first.org/data/v1/epss?cve=CVE-2017-7559
epss 0.01128 https://api.first.org/data/v1/epss?cve=CVE-2017-7559
epss 0.01128 https://api.first.org/data/v1/epss?cve=CVE-2017-7559
epss 0.01128 https://api.first.org/data/v1/epss?cve=CVE-2017-7559
epss 0.01128 https://api.first.org/data/v1/epss?cve=CVE-2017-7559
epss 0.01128 https://api.first.org/data/v1/epss?cve=CVE-2017-7559
epss 0.01128 https://api.first.org/data/v1/epss?cve=CVE-2017-7559
cvssv3.1 6.1 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7559
generic_textual MODERATE https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7559
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-rj76-h87p-r3wf
cvssv3.1 6.1 https://github.com/undertow-io/undertow
generic_textual MODERATE https://github.com/undertow-io/undertow
cvssv3.1 6.1 https://issues.jboss.org/browse/UNDERTOW-1251
generic_textual MODERATE https://issues.jboss.org/browse/UNDERTOW-1251
cvssv2 5.8 https://nvd.nist.gov/vuln/detail/CVE-2017-7559
cvssv3 6.1 https://nvd.nist.gov/vuln/detail/CVE-2017-7559
cvssv3.1 6.1 https://nvd.nist.gov/vuln/detail/CVE-2017-7559
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2017-7559
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2017:3454
https://access.redhat.com/errata/RHSA-2017:3455
https://access.redhat.com/errata/RHSA-2017:3456
https://access.redhat.com/errata/RHSA-2017:3458
https://access.redhat.com/errata/RHSA-2018:0002
https://access.redhat.com/errata/RHSA-2018:0003
https://access.redhat.com/errata/RHSA-2018:0004
https://access.redhat.com/errata/RHSA-2018:0005
https://access.redhat.com/errata/RHSA-2018:1322
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7559.json
https://api.first.org/data/v1/epss?cve=CVE-2017-7559
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7559
https://github.com/undertow-io/undertow
https://issues.jboss.org/browse/UNDERTOW-1251
1481665 https://bugzilla.redhat.com/show_bug.cgi?id=1481665
885576 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=885576
cpe:2.3:a:redhat:undertow:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:redhat:undertow:*:*:*:*:*:*:*:*
cpe:2.3:a:redhat:undertow:2.0.0:alpha1:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:redhat:undertow:2.0.0:alpha1:*:*:*:*:*:*
CVE-2017-7559 https://nvd.nist.gov/vuln/detail/CVE-2017-7559
GHSA-rj76-h87p-r3wf https://github.com/advisories/GHSA-rj76-h87p-r3wf
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7559.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:N/UI:R/S:C/C:L/I:L/A:N Found at https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7559
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://github.com/undertow-io/undertow
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://issues.jboss.org/browse/UNDERTOW-1251
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:N/C:P/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2017-7559
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:3.0/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-2017-7559
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://nvd.nist.gov/vuln/detail/CVE-2017-7559
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 0.78246
EPSS Score 0.01128
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:47:32.194105+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/io.undertow/undertow-core/CVE-2017-7559.yml 38.0.0