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Vulnerability details: VCID-8kva-hv12-9ydc
Vulnerability ID VCID-8kva-hv12-9ydc
Aliases CVE-2014-9720
GHSA-8vpw-mgpf-mpvv
PYSEC-2020-213
Summary Tornado before 3.2.2 sends arbitrary responses that contain a fixed CSRF token and may be sent with HTTP compression, which makes it easier for remote attackers to conduct a BREACH attack and determine this token via a series of crafted requests.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-203 Observable Discrepancy
CWE-201 Insertion of Sensitive Information Into Sent Data
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3.1 6.5 http://openwall.com/lists/oss-security/2015/05/19/4
cvssv4 7.1 http://openwall.com/lists/oss-security/2015/05/19/4
generic_textual HIGH http://openwall.com/lists/oss-security/2015/05/19/4
epss 0.00904 https://api.first.org/data/v1/epss?cve=CVE-2014-9720
epss 0.00904 https://api.first.org/data/v1/epss?cve=CVE-2014-9720
epss 0.00904 https://api.first.org/data/v1/epss?cve=CVE-2014-9720
epss 0.00904 https://api.first.org/data/v1/epss?cve=CVE-2014-9720
epss 0.00904 https://api.first.org/data/v1/epss?cve=CVE-2014-9720
epss 0.00904 https://api.first.org/data/v1/epss?cve=CVE-2014-9720
epss 0.00904 https://api.first.org/data/v1/epss?cve=CVE-2014-9720
epss 0.00904 https://api.first.org/data/v1/epss?cve=CVE-2014-9720
epss 0.00904 https://api.first.org/data/v1/epss?cve=CVE-2014-9720
epss 0.00904 https://api.first.org/data/v1/epss?cve=CVE-2014-9720
cvssv3.1 6.5 https://bugzilla.novell.com/show_bug.cgi?id=930362
cvssv4 7.1 https://bugzilla.novell.com/show_bug.cgi?id=930362
generic_textual HIGH https://bugzilla.novell.com/show_bug.cgi?id=930362
cvssv3.1 6.5 https://bugzilla.redhat.com/show_bug.cgi?id=1222816
cvssv4 7.1 https://bugzilla.redhat.com/show_bug.cgi?id=1222816
generic_textual HIGH https://bugzilla.redhat.com/show_bug.cgi?id=1222816
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-8vpw-mgpf-mpvv
cvssv3.1 6.5 https://github.com/pypa/advisory-database/tree/main/vulns/tornado/PYSEC-2020-213.yaml
cvssv4 7.1 https://github.com/pypa/advisory-database/tree/main/vulns/tornado/PYSEC-2020-213.yaml
generic_textual HIGH https://github.com/pypa/advisory-database/tree/main/vulns/tornado/PYSEC-2020-213.yaml
cvssv3.1 6.5 https://github.com/tornadoweb/tornado
cvssv4 7.1 https://github.com/tornadoweb/tornado
generic_textual HIGH https://github.com/tornadoweb/tornado
cvssv3.1 6.5 https://github.com/tornadoweb/tornado/commit/1c36307463b1e8affae100bf9386948e6c1b2308
cvssv4 7.1 https://github.com/tornadoweb/tornado/commit/1c36307463b1e8affae100bf9386948e6c1b2308
generic_textual HIGH https://github.com/tornadoweb/tornado/commit/1c36307463b1e8affae100bf9386948e6c1b2308
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2014-9720
cvssv4 7.1 https://nvd.nist.gov/vuln/detail/CVE-2014-9720
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2014-9720
cvssv3.1 6.5 http://www.tornadoweb.org/en/stable/releases/v3.2.2.html
cvssv4 7.1 http://www.tornadoweb.org/en/stable/releases/v3.2.2.html
generic_textual HIGH http://www.tornadoweb.org/en/stable/releases/v3.2.2.html
Reference id Reference type URL
http://openwall.com/lists/oss-security/2015/05/19/4
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2014-9720.json
https://api.first.org/data/v1/epss?cve=CVE-2014-9720
https://bugzilla.novell.com/show_bug.cgi?id=930362
https://bugzilla.redhat.com/show_bug.cgi?id=1222816
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9720
https://github.com/pypa/advisory-database/tree/main/vulns/tornado/PYSEC-2020-213.yaml
https://github.com/tornadoweb/tornado
https://github.com/tornadoweb/tornado/commit/1c36307463b1e8affae100bf9386948e6c1b2308
https://nvd.nist.gov/vuln/detail/CVE-2014-9720
http://www.tornadoweb.org/en/stable/releases/v3.2.2.html
GHSA-8vpw-mgpf-mpvv https://github.com/advisories/GHSA-8vpw-mgpf-mpvv
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Found at http://openwall.com/lists/oss-security/2015/05/19/4
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

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Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Found at http://openwall.com/lists/oss-security/2015/05/19/4
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Found at https://bugzilla.novell.com/show_bug.cgi?id=930362
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://bugzilla.novell.com/show_bug.cgi?id=930362
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Found at https://bugzilla.redhat.com/show_bug.cgi?id=1222816
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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required

unchanged

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Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://bugzilla.redhat.com/show_bug.cgi?id=1222816
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Found at https://github.com/pypa/advisory-database/tree/main/vulns/tornado/PYSEC-2020-213.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

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Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://github.com/pypa/advisory-database/tree/main/vulns/tornado/PYSEC-2020-213.yaml
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Found at https://github.com/tornadoweb/tornado
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://github.com/tornadoweb/tornado
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

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physical

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Found at https://github.com/tornadoweb/tornado/commit/1c36307463b1e8affae100bf9386948e6c1b2308
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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none

required

unchanged

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Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://github.com/tornadoweb/tornado/commit/1c36307463b1e8affae100bf9386948e6c1b2308
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

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passive

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2014-9720
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

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none

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Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Found at https://nvd.nist.gov/vuln/detail/CVE-2014-9720
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

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passive

active

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Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Found at http://www.tornadoweb.org/en/stable/releases/v3.2.2.html
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

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none

required

unchanged

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high

low

none

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Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N Found at http://www.tornadoweb.org/en/stable/releases/v3.2.2.html
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

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present

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passive

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Exploit Prediction Scoring System (EPSS)
Percentile 0.75653
EPSS Score 0.00904
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:42:14.003913+00:00 Pypa Importer Import https://github.com/pypa/advisory-database/blob/main/vulns/tornado/PYSEC-2020-213.yaml 38.0.0