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Vulnerability details: VCID-gcxz-59qc-e3h8
Vulnerability ID VCID-gcxz-59qc-e3h8
Aliases CVE-2016-2515
GHSA-jcpv-g9rr-qxrc
Summary Regular Expression Denial of Service Specifically crafted long headers or uris can cause a minor denial of service.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-399 Resource Management Errors
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1333 Inefficient Regular Expression Complexity
System Score Found at
epss 0.05317 https://api.first.org/data/v1/epss?cve=CVE-2016-2515
cvssv3.1 7.5 https://bugzilla.redhat.com/show_bug.cgi?id=1309721
generic_textual HIGH https://bugzilla.redhat.com/show_bug.cgi?id=1309721
cvssv3.1 7.5 https://github.com/advisories/GHSA-jcpv-g9rr-qxrc
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-jcpv-g9rr-qxrc
generic_textual HIGH https://github.com/advisories/GHSA-jcpv-g9rr-qxrc
cvssv3.1 7.5 https://github.com/hueniverse/hawk
generic_textual HIGH https://github.com/hueniverse/hawk
cvssv3.1 7.5 https://github.com/hueniverse/hawk/commit/0833f99ba64558525995a7e21d4093da1f3e15fa
generic_textual HIGH https://github.com/hueniverse/hawk/commit/0833f99ba64558525995a7e21d4093da1f3e15fa
cvssv3 5.3 https://github.com/hueniverse/hawk/issues/168
cvssv3.1 7.5 https://github.com/hueniverse/hawk/issues/168
generic_textual HIGH https://github.com/hueniverse/hawk/issues/168
cvssv3 5.3 https://github.com/nodejs/security-wg/blob/main/vuln/npm/77.json
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2016-2515
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2016-2515
cvssv3.1 7.5 https://www.npmjs.com/advisories/77
generic_textual HIGH https://www.npmjs.com/advisories/77
cvssv3 5.3 https://www.owasp.org/index.php/Regular_expression_Denial_of_Service_-_ReDoS
cvssv3.1 7.5 http://www.openwall.com/lists/oss-security/2016/02/20/1
generic_textual HIGH http://www.openwall.com/lists/oss-security/2016/02/20/1
cvssv3.1 7.5 http://www.openwall.com/lists/oss-security/2016/02/20/2
generic_textual HIGH http://www.openwall.com/lists/oss-security/2016/02/20/2
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2016-2515
https://bugzilla.redhat.com/show_bug.cgi?id=1309721
https://github.com/hueniverse/hawk
https://github.com/hueniverse/hawk/commit/0833f99ba64558525995a7e21d4093da1f3e15fa
https://github.com/hueniverse/hawk/issues/168
https://www.npmjs.com/advisories/77
https://www.owasp.org/index.php/Regular_expression_Denial_of_Service_-_ReDoS
http://www.openwall.com/lists/oss-security/2016/02/20/1
http://www.openwall.com/lists/oss-security/2016/02/20/2
77 https://github.com/nodejs/security-wg/blob/main/vuln/npm/77.json
CVE-2016-2515 https://nvd.nist.gov/vuln/detail/CVE-2016-2515
GHSA-jcpv-g9rr-qxrc https://github.com/advisories/GHSA-jcpv-g9rr-qxrc
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://bugzilla.redhat.com/show_bug.cgi?id=1309721
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/advisories/GHSA-jcpv-g9rr-qxrc
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

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physical

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/hueniverse/hawk
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

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/hueniverse/hawk/commit/0833f99ba64558525995a7e21d4093da1f3e15fa
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

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/hueniverse/hawk/issues/168
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

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required

unchanged

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2016-2515
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:H Found at https://www.npmjs.com/advisories/77
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

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low

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at http://www.openwall.com/lists/oss-security/2016/02/20/1
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

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at http://www.openwall.com/lists/oss-security/2016/02/20/2
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

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none

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low

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Exploit Prediction Scoring System (EPSS)
Percentile 0.90185
EPSS Score 0.05317
Published At May 30, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-05-30T20:52:24.980530+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/hawk/CVE-2016-2515.yml 38.6.0