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Vulnerability details: VCID-csbz-fj5g-j7f2
Vulnerability ID VCID-csbz-fj5g-j7f2
Aliases CVE-2018-7159
Summary The HTTP parser in all current versions of Node.js ignores spaces in the `Content-Length` header, allowing input such as `Content-Length: 1 2` to be interpreted as having a value of `12`. The HTTP specification does not allow for spaces in the `Content-Length` value and the Node.js HTTP parser has been brought into line on this particular difference. The security risk of this flaw to Node.js users is considered to be VERY LOW as it is difficult, and may be impossible, to craft an attack that makes use of this flaw in a way that could not already be achieved by supplying an incorrect value for `Content-Length`. Vulnerabilities may exist in user-code that make incorrect assumptions about the potential accuracy of this value compared to the actual length of the data supplied. Node.js users crafting lower-level HTTP utilities are advised to re-check the length of any input supplied after parsing is complete.
Status Published
Exploitability 0.5
Weighted Severity 4.8
Risk 2.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-20 Improper Input Validation
System Score Found at
cvssv3 5.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-7159.json
epss 0.01008 https://api.first.org/data/v1/epss?cve=CVE-2018-7159
epss 0.01008 https://api.first.org/data/v1/epss?cve=CVE-2018-7159
epss 0.01008 https://api.first.org/data/v1/epss?cve=CVE-2018-7159
epss 0.01008 https://api.first.org/data/v1/epss?cve=CVE-2018-7159
epss 0.01008 https://api.first.org/data/v1/epss?cve=CVE-2018-7159
epss 0.01008 https://api.first.org/data/v1/epss?cve=CVE-2018-7159
epss 0.01008 https://api.first.org/data/v1/epss?cve=CVE-2018-7159
epss 0.01008 https://api.first.org/data/v1/epss?cve=CVE-2018-7159
epss 0.01008 https://api.first.org/data/v1/epss?cve=CVE-2018-7159
epss 0.01008 https://api.first.org/data/v1/epss?cve=CVE-2018-7159
epss 0.01008 https://api.first.org/data/v1/epss?cve=CVE-2018-7159
epss 0.01008 https://api.first.org/data/v1/epss?cve=CVE-2018-7159
epss 0.01008 https://api.first.org/data/v1/epss?cve=CVE-2018-7159
epss 0.01008 https://api.first.org/data/v1/epss?cve=CVE-2018-7159
epss 0.01008 https://api.first.org/data/v1/epss?cve=CVE-2018-7159
epss 0.01008 https://api.first.org/data/v1/epss?cve=CVE-2018-7159
cvssv3 5.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2018-7159
cvssv3.1 5.3 https://nvd.nist.gov/vuln/detail/CVE-2018-7159
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2019:2258
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-7159.json
https://api.first.org/data/v1/epss?cve=CVE-2018-7159
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7159
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://nodejs.org/en/blog/vulnerability/march-2018-security-releases/
https://support.f5.com/csp/article/K27228191?utm_source=f5support&amp%3Butm_medium=RSS
1561981 https://bugzilla.redhat.com/show_bug.cgi?id=1561981
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*
cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*
CVE-2018-7159 https://nvd.nist.gov/vuln/detail/CVE-2018-7159
RHSA-2018:2949 https://access.redhat.com/errata/RHSA-2018:2949
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-7159.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:N/S:U/C:N/I:N/A:L 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: AV:N/AC:L/Au:N/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-7159
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-7159
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 0.76141
EPSS Score 0.01008
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:31:01.770193+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.9/community.json 37.0.0