HOMEVULNERABILITIESCVE-2020-27197
CRITICAL

CVE-2020-27197

CWE-918Published: October 17, 2020· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2020-27197 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

eclecticiq1 product(s)
opentaxii
libtaxii_project1 product(s)
libtaxii
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories

ADVISORYhttp://packetstormsecurity.com/files/159662/Libtaxii-1.1.117-OpenTaxi-0.2.0-Server-Side-Request-Forgery.html
ADVISORYhttps://github.com/TAXIIProject/libtaxii/issues/246
ADVISORYhttps://github.com/eclecticiq/OpenTAXII/issues/176
ADVISORYhttp://packetstormsecurity.com/files/159662/Libtaxii-1.1.117-OpenTaxi-0.2.0-Server-Side-Request-Forgery.html
ADVISORYhttps://github.com/TAXIIProject/libtaxii/issues/246
ADVISORYhttps://github.com/eclecticiq/OpenTAXII/issues/176

All References (6)

→
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

Quick Facts

CVE IDCVE-2020-27197
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-918
CISA KEVNo
Affected2 vendor(s)
PublishedOct 17, 2020

Related CVEs (CWE-918)

CVE-2026-26150
10.0
CVE-2017-12905
10.0
CVE-2016-10927
10.0
CVE-2016-10926
10.0
CVE-2017-8794
10.0
CVE-2017-11291
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-27197 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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