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Vulnerability details: VCID-as34-f89r-e7ck
Vulnerability ID VCID-as34-f89r-e7ck
Aliases CVE-2026-33002
GHSA-phhv-63fh-rrc8
Summary Jenkins has a DNS rebinding vulnerability in WebSocket CLI origin validation Jenkins 2.442 through 2.554 (both inclusive), LTS 2.426.3 through LTS 2.541.2 (both inclusive) performs origin validation of requests made through the CLI WebSocket endpoint by computing the expected origin for comparison using the Host or X-Forwarded-Host HTTP request headers, making it vulnerable to DNS rebinding attacks that allow bypassing origin validation.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-346 Origin Validation Error
CWE-350 Reliance on Reverse DNS Resolution for a Security-Critical Action
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 5.9 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33002.json
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2026-33002
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2026-33002
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2026-33002
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2026-33002
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2026-33002
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2026-33002
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2026-33002
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2026-33002
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2026-33002
epss 0.00047 https://api.first.org/data/v1/epss?cve=CVE-2026-33002
epss 0.00051 https://api.first.org/data/v1/epss?cve=CVE-2026-33002
epss 0.00051 https://api.first.org/data/v1/epss?cve=CVE-2026-33002
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-phhv-63fh-rrc8
cvssv3.1 7.5 https://github.com/jenkinsci/jenkins
generic_textual HIGH https://github.com/jenkinsci/jenkins
cvssv3.1 7.5 https://github.com/jenkinsci/jenkins/commit/348666da7136ef8270f88c0a7350562b0ba7f8ce
generic_textual HIGH https://github.com/jenkinsci/jenkins/commit/348666da7136ef8270f88c0a7350562b0ba7f8ce
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2026-33002
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2026-33002
cvssv3.1 7.5 https://www.jenkins.io/security/advisory/2026-03-18/#SECURITY-3674
generic_textual HIGH https://www.jenkins.io/security/advisory/2026-03-18/#SECURITY-3674
ssvc Track https://www.jenkins.io/security/advisory/2026-03-18/#SECURITY-3674
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33002.json
https://api.first.org/data/v1/epss?cve=CVE-2026-33002
https://github.com/jenkinsci/jenkins
https://github.com/jenkinsci/jenkins/commit/348666da7136ef8270f88c0a7350562b0ba7f8ce
https://nvd.nist.gov/vuln/detail/CVE-2026-33002
https://www.jenkins.io/security/advisory/2026-03-18/#SECURITY-3674
2448643 https://bugzilla.redhat.com/show_bug.cgi?id=2448643
GHSA-phhv-63fh-rrc8 https://github.com/advisories/GHSA-phhv-63fh-rrc8
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-33002.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:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/jenkinsci/jenkins
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:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/jenkinsci/jenkins/commit/348666da7136ef8270f88c0a7350562b0ba7f8ce
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:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2026-33002
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:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://www.jenkins.io/security/advisory/2026-03-18/#SECURITY-3674
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: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2026-03-19T14:43:30Z/ Found at https://www.jenkins.io/security/advisory/2026-03-18/#SECURITY-3674
Exploit Prediction Scoring System (EPSS)
Percentile 0.1467
EPSS Score 0.00047
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:54:08.245316+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-phhv-63fh-rrc8/GHSA-phhv-63fh-rrc8.json 38.0.0