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Vulnerability record · CVE-2014-9720 · published 24 January 2020

CVE-2014-9720: Tornadoweb tornado observable discrepancy vulnerability

Tornadoweb · Tornado

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.

6.5 CVSS 3.1 Medium EPSS 2.5% · top 15.9% CWE-203 · Observable discrepancy
6.5CVSS 3.1 base score, v2 4.3
2.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://openwall.com/lists/oss-security/2015/05/19/4 Mailing ListPatchThird Party Advisory
http://www.tornadoweb.org/en/stable/releases/v3.2.2.html Release NotesVendor Advisory
https://bugzilla.novell.com/show_bug.cgi?id=930362 Issue TrackingPatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1222816 Issue TrackingPatchThird Party Advisory
https://github.com/tornadoweb/tornado/commit/1c36307463b1e8affae100bf9386948e6c1b2308 Patch
http://openwall.com/lists/oss-security/2015/05/19/4 Mailing ListPatchThird Party Advisory
http://www.tornadoweb.org/en/stable/releases/v3.2.2.html Release NotesVendor Advisory
https://bugzilla.novell.com/show_bug.cgi?id=930362 Issue TrackingPatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1222816 Issue TrackingPatchThird Party Advisory
https://github.com/tornadoweb/tornado/commit/1c36307463b1e8affae100bf9386948e6c1b2308 Patch

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2014-9720), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.