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Vulnerability details: VCID-nzfm-az28-b7ak
Vulnerability ID VCID-nzfm-az28-b7ak
Aliases CVE-2025-23167
Summary A flaw in Node.js 20's HTTP parser allows improper termination of HTTP/1 headers using `\r\n\rX` instead of the required `\r\n\r\n`. This inconsistency enables request smuggling, allowing attackers to bypass proxy-based access controls and submit unauthorized requests. The issue was resolved by upgrading `llhttp` to version 9, which enforces correct header termination. Impact: * This vulnerability affects only Node.js 20.x users prior to the `llhttp` v9 upgrade.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
System Score Found at
cvssv3 6.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-23167.json
epss 0.00027 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.0003 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.0003 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.0003 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.0003 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.0003 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00039 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00039 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00039 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
epss 0.00039 https://api.first.org/data/v1/epss?cve=CVE-2025-23167
cvssv3.1 6.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3 6.5 https://nodejs.org/en/blog/vulnerability/may-2025-security-releases
ssvc Track https://nodejs.org/en/blog/vulnerability/may-2025-security-releases
archlinux High https://security.archlinux.org/AVG-2873
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-23167.json
https://api.first.org/data/v1/epss?cve=CVE-2025-23167
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-23167
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
2367167 https://bugzilla.redhat.com/show_bug.cgi?id=2367167
977716 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=977716
ASA-202505-8 https://security.archlinux.org/ASA-202505-8
AVG-2873 https://security.archlinux.org/AVG-2873
CVE-2025-23167 https://nvd.nist.gov/vuln/detail/CVE-2025-23167
may-2025-security-releases https://nodejs.org/en/blog/vulnerability/may-2025-security-releases
RHSA-2025:8468 https://access.redhat.com/errata/RHSA-2025:8468
RHSA-2025:8514 https://access.redhat.com/errata/RHSA-2025:8514
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-2025-23167.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:L/PR:N/UI:N/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

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:N/S:U/C:L/I:L/A:N Found at https://nodejs.org/en/blog/vulnerability/may-2025-security-releases
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:Y/T:P/P:M/B:A/M:M/D:T/2025-05-19T15:09:55Z/ Found at https://nodejs.org/en/blog/vulnerability/may-2025-security-releases
Exploit Prediction Scoring System (EPSS)
Percentile 0.05971
EPSS Score 0.00027
Published At May 24, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-05-15T10:52:46.671181+00:00 Debian Importer Import https://security-tracker.debian.org/tracker/data/json 36.0.0