CVE-2020-27197

Name: CVE-2020-27197
Creator: NVD / NIST
Published: 2020-10-17T20:15:10.657+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.25%

Last modified Jun 17, 2026

CVE-2020-27197 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. TAXII libtaxii through 1.1.117, as used in EclecticIQ OpenTAXII through 0.2.0 and other products, allows SSRF via an initial http:// substring to the parse method, even when the no_network setting is used for the XML parser. NOTE: the vendor points out that the parse method "wraps the lxml library" and that this may be an issue to "raise ... EPSS estimates a 2.25% chance of exploitation in the next 30 days.

Description

TAXII libtaxii through 1.1.117, as used in EclecticIQ OpenTAXII through 0.2.0 and other products, allows SSRF via an initial http:// substring to the parse method, even when the no_network setting is used for the XML parser. NOTE: the vendor points out that the parse method "wraps the lxml library" and that this may be an issue to "raise ... to the lxml group.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

2.25%

80.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

Affected Software

Vendor	Product	Versions
Eclecticiq	Opentaxii	<= 0.2.0
Libtaxii Project	Libtaxii	<= 1.1.117

References

http://packetstormsecurity.com/files/159662/Libtaxii-1.1.117-OpenTaxi-0.2.0-Server-Side-Request-Forgery.htmlExploit, Third Party Advisory
https://github.com/TAXIIProject/libtaxii/issues/246Exploit, Third Party Advisory
https://github.com/eclecticiq/OpenTAXII/issues/176Exploit, Third Party Advisory
http://packetstormsecurity.com/files/159662/Libtaxii-1.1.117-OpenTaxi-0.2.0-Server-Side-Request-Forgery.htmlExploit, Third Party Advisory
https://github.com/TAXIIProject/libtaxii/issues/246Exploit, Third Party Advisory
https://github.com/eclecticiq/OpenTAXII/issues/176Exploit, Third Party Advisory

Timeline

Published: Oct 17, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-27197?

How severe is CVE-2020-27197?

CVE-2020-27197 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.25% probability of exploitation in the next 30 days.

How do I fix CVE-2020-27197?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-27197?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST