Every CVE Search/ Get API key

CVE-2020-27197

libtaxii Server-Side Request Forgery vulnerability

9.8 CriticalFix availableDisputed

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.31%Up 1.5 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 9.8

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.

Record
CVE-2020-27197
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-918
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2020-27197
Updated
2026-11-02
EUVDEUVD-2020-0099 No score

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.

Record
EUVD-2020-0099
Updated
2026-11-03
GitHub AdvisoriesGHSA-836c-xg97-8p4h 9.3

libtaxii Server-Side Request Forgery vulnerability

"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.""

Record
GHSA-836c-xg97-8p4h
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-918
Updated
2026-11-02
OSV 9.8

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.

Record
CVE-2020-27197
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-836c-xg97-8p4h 9.3

libtaxii Server-Side Request Forgery vulnerability

"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.""

Record
GHSA-836c-xg97-8p4h
CVSS 4.0
9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-918
Updated
2026-11-02
OSVPYSEC-2020-59 No score

** DISPUTED ** 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."

Record
PYSEC-2020-59
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
libtaxii
PyPI
before 1.1.118
1.1.118
libtaxii
PyPI
before 1.1.118, plus listed versions
1.0.0901.0.1001.0.1011.0.1031.0.104
Show 21 moreShow less
1.0.1051.0.1061.0.1071.1.1001.1.1011.1.1021.1.1031.1.1041.1.1051.1.1061.1.1071.1.1081.1.1091.1.1101.1.1111.1.1121.1.1131.1.1141.1.1151.1.1161.1.117
1.1.118

History

History
RecordedChangedSources
facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-27197 is a critical vulnerability (CVSS 9.8) in Eclecticiq Opentaxii, published October 17, 2020. Its validity is disputed. EPSS puts the chance of exploitation in the next 30 days at 2.31%, the 83rd percentile. Fixed in libtaxii 1.1.118.

References

MoveEnter Open