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CVE-2014-9720

20
FAUCET Score

CVE-2014-9720 describes a vulnerability in Tornado versions prior to 3.2.2, where the web framework could send arbitrary responses containing a fixed CSRF token, potentially compressed. This flaw allows remote attackers to conduct a BREACH attack, enabling them to determine the CSRF token through a series of crafted requests. The vulnerability has a CVSS score of 6.5 (Medium), indicating a network-based attack with low complexity, requiring user interaction, and leading to high confidentiality impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.2.2CPE matchmatch criteria
cpe:2.3:a:tornadoweb:tornado:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.49%
Probability of exploitation in next 30 days
EPSS Percentile
82.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0249 is in the 92nd percentile among its peer group of 26,209 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: tornadoFixed in: 3.2.2
redhatpatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: python-tornado

Vendor Advisories (2)

pipGHSA-8vpw-mgpf-mpvvhigh

Tornado XSRF cookie allows side-channel attack against TLS (BREACH attack)

May 17, 2022
redhatCVE-2014-9720Moderate

python-tornado: XSRF cookie allows side-channel attack against TLS (BREACH)

May 26, 2014

References

openwall.com / lists/oss-security/2015/05/19/4
Mailing ListPatchThird Party Advisory
bugzilla.novell.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
github.com / tornadoweb/tornado/commit/1c36307463b1e8affae100bf9386948e6c1b2308
Patch
tornadoweb.org / en/stable/releases/v3.2.2.html
Release NotesVendor Advisory