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Vulnerability details: VCID-q83t-h55y-eyhv
Vulnerability ID VCID-q83t-h55y-eyhv
Aliases CVE-2017-5453
Summary A mechanism to inject static HTML into the RSS reader preview page due to a failure to escape characters sent as URL parameters for a feed's TITLE element. This vulnerability allows for spoofing but no scripted content can be run.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-20 Improper Input Validation
System Score Found at
cvssv3 4.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-5453.json
epss 0.00548 https://api.first.org/data/v1/epss?cve=CVE-2017-5453
epss 0.00548 https://api.first.org/data/v1/epss?cve=CVE-2017-5453
epss 0.00548 https://api.first.org/data/v1/epss?cve=CVE-2017-5453
epss 0.00548 https://api.first.org/data/v1/epss?cve=CVE-2017-5453
epss 0.00548 https://api.first.org/data/v1/epss?cve=CVE-2017-5453
epss 0.00548 https://api.first.org/data/v1/epss?cve=CVE-2017-5453
epss 0.00548 https://api.first.org/data/v1/epss?cve=CVE-2017-5453
epss 0.00548 https://api.first.org/data/v1/epss?cve=CVE-2017-5453
epss 0.00548 https://api.first.org/data/v1/epss?cve=CVE-2017-5453
cvssv2 5.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2017-5453
cvssv3 4.3 https://nvd.nist.gov/vuln/detail/CVE-2017-5453
archlinux Critical https://security.archlinux.org/AVG-249
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-10
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-5453.json
https://api.first.org/data/v1/epss?cve=CVE-2017-5453
https://bugzilla.mozilla.org/show_bug.cgi?id=1321247
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.mozilla.org/security/advisories/mfsa2017-10/
http://www.securityfocus.com/bid/97940
http://www.securitytracker.com/id/1038320
1443343 https://bugzilla.redhat.com/show_bug.cgi?id=1443343
ASA-201704-6 https://security.archlinux.org/ASA-201704-6
AVG-249 https://security.archlinux.org/AVG-249
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-2017-5453 https://nvd.nist.gov/vuln/detail/CVE-2017-5453
mfsa2017-10 https://www.mozilla.org/en-US/security/advisories/mfsa2017-10
USN-3260-1 https://usn.ubuntu.com/3260-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-5453.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:N/I:P/A:P 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: AV:N/AC:M/Au:N/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2017-5453
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:R/S:U/C:N/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2017-5453
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 0.67827
EPSS Score 0.00548
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:16:42.505324+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2017/mfsa2017-10.yml 38.0.0