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Vulnerability details: VCID-gf3v-rmys-syex
Vulnerability ID VCID-gf3v-rmys-syex
Aliases CVE-2017-7797
Summary Response header name interning does not have same-origin protections and these headers are stored in a global registry. This allows stored header names to be available cross-origin.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-212 Improper Removal of Sensitive Information Before Storage or Transfer
CWE-346 Origin Validation Error
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7797.json
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2017-7797
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2017-7797
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2017-7797
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2017-7797
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2017-7797
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2017-7797
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2017-7797
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2017-7797
epss 0.00123 https://api.first.org/data/v1/epss?cve=CVE-2017-7797
cvssv2 7.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3 3.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2017-7797
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2017-7797
archlinux Critical https://security.archlinux.org/AVG-375
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-18
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7797.json
https://api.first.org/data/v1/epss?cve=CVE-2017-7797
https://bugzilla.mozilla.org/show_bug.cgi?id=1334776
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.mozilla.org/security/advisories/mfsa2017-18/
http://www.securitytracker.com/id/1039124
1479212 https://bugzilla.redhat.com/show_bug.cgi?id=1479212
ASA-201708-3 https://security.archlinux.org/ASA-201708-3
AVG-375 https://security.archlinux.org/AVG-375
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
CVE-2017-7797 https://nvd.nist.gov/vuln/detail/CVE-2017-7797
mfsa2017-18 https://www.mozilla.org/en-US/security/advisories/mfsa2017-18
USN-3391-1 https://usn.ubuntu.com/3391-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-7797.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: AV:N/AC:M/Au:N/C:C/I:N/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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:H/PR:N/UI:R/S:U/C:L/I:N/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: AV:N/AC:L/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2017-7797
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:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2017-7797
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 0.31385
EPSS Score 0.00123
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:16:44.545576+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2017/mfsa2017-18.yml 38.0.0