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CVE-2020-13597

Calico nodes IPv6 traffic redirection from route advertisment

6.0 MediumFix available

Clusters using Calico (version 3.14.0 and below), Calico Enterprise (version 2.8.2 and below), may be vulnerable to information disclosure if IPv6 is enabled but unused. A compromised pod with sufficient privilege is able to reconfigure the node’s IPv6 interface due to the node accepting route advertisement by default, allowing the attacker to redirect full or partial network traffic from the node to the compromised pod.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
Low

Exploit likelihood

0.90%Up 0.1 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 6.0

Calico nodes IPv6 traffic redirection from route advertisment

Clusters using Calico (version 3.14.0 and below), Calico Enterprise (version 2.8.2 and below), may be vulnerable to information disclosure if IPv6 is enabled but unused. A compromised pod with sufficient privilege is able to reconfigure the node’s IPv6 interface due to the node accepting route advertisement by default, allowing the attacker to redirect full or partial network traffic from the node to the compromised pod.

Record
CVE-2020-13597
CVSS 3.1
6.0 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Weakness
CWE-201
Updated
2026-11-02
EUVDEUVD-2022-1122 6.0

Clusters using Calico (version 3.14.0 and below), Calico Enterprise (version 2.8.2 and below), may be vulnerable to information disclosure if IPv6 is enabled but unused. A compromised pod with sufficient privilege is able to reconfigure the node’s IPv6 interface due to the node accepting route advertisement by default, allowing the attacker to redirect full or partial network traffic from the node to the compromised pod.

Record
EUVD-2022-1122
CVSS 3.1
6.0 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Updated
2026-11-03
GitHub AdvisoriesGHSA-pf59-j7c2-rh6x 6.0

Exposure of Sensitive Information to an Unauthorized Actor and Insertion of Sensitive Information Into Sent Data in Calico

Clusters using Calico (version 3.14.0 and below), Calico Enterprise (version 2.8.2 and below), may be vulnerable to information disclosure if IPv6 is enabled but unused. A compromised pod with sufficient privilege is able to reconfigure the node’s IPv6 interface due to the node accepting route advertisement by default, allowing the attacker to redirect full or partial network traffic from the node to the compromised pod.

Record
GHSA-pf59-j7c2-rh6x
CVSS 3.1
6.0 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Weakness
CWE-200, CWE-201
Updated
2026-11-02
NVD 6.0

Clusters using Calico (version 3.14.0 and below), Calico Enterprise (version 2.8.2 and below), may be vulnerable to information disclosure if IPv6 is enabled but unused. A compromised pod with sufficient privilege is able to reconfigure the node’s IPv6 interface due to the node accepting route advertisement by default, allowing the attacker to redirect full or partial network traffic from the node to the compromised pod.

Record
CVE-2020-13597
CVSS 3.1
6.0 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
CVSS 3.1
3.5 LowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
CVSS 2.0
2.1 LowAV:N/AC:H/Au:S/C:P/I:N/A:N
Weakness
CWE-201, CWE-200
Updated
2026-11-02
OSV 3.5

Clusters using Calico (version 3.14.0 and below), Calico Enterprise (version 2.8.2 and below), may be vulnerable to information disclosure if IPv6 is enabled but unused. A compromised pod with sufficient privilege is able to reconfigure the node’s IPv6 interface due to the node accepting route advertisement by default, allowing the attacker to redirect full or partial network traffic from the node to the compromised pod.

Record
CVE-2020-13597
CVSS 3.1
3.5 LowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
Updated
2026-11-02
OSVGHSA-pf59-j7c2-rh6x 6.0

Exposure of Sensitive Information to an Unauthorized Actor and Insertion of Sensitive Information Into Sent Data in Calico

Clusters using Calico (version 3.14.0 and below), Calico Enterprise (version 2.8.2 and below), may be vulnerable to information disclosure if IPv6 is enabled but unused. A compromised pod with sufficient privilege is able to reconfigure the node’s IPv6 interface due to the node accepting route advertisement by default, allowing the attacker to redirect full or partial network traffic from the node to the compromised pod.

Record
GHSA-pf59-j7c2-rh6x
CVSS 3.1
6.0 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Weakness
CWE-200, CWE-201
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
github.com/projectcalico/calico
Go
3.14.0 up to 3.14.1
3.14.1
github.com/projectcalico/calico
Go
3.13.0 up to 3.13.4
3.13.4
github.com/projectcalico/calico
Go
3.12.0 up to 3.12.2
3.12.2
github.com/projectcalico/calico
Go
3.11.0 up to 3.11.3
3.11.3
github.com/projectcalico/calico
Go
3.10.0 up to 3.10.4
3.10.4
github.com/projectcalico/calico
Go
3.9.0 up to 3.9.6
3.9.6
github.com/projectcalico/calico
Go
before 3.8.9
3.8.9

History

History
RecordedChangedSources
aliases, products, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2020-13597 is a medium vulnerability (CVSS 6.0) in Projectcalico Calico, published June 3, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.90%, the 59th percentile. Fixed in github.com/projectcalico/calico 3.14.1.

References

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