What is the severity of CVE-2020-29509?

The severity of CVE-2020-29509 is critical with a CVSS score of 5.6.

Which software versions are affected by CVE-2020-29509?

All versions of Go up to (but not including) 1.17 and Netapp Trident are affected by CVE-2020-29509.

How does CVE-2020-29509 affect the encoding/xml package in Go?

CVE-2020-29509 affects the encoding/xml package in Go by not correctly preserving the semantics of attribute namespace prefixes during tokenization round-trips.

Are there any references available for CVE-2020-29509?

Yes, you can find references for CVE-2020-29509 at the following links: [GitHub Advisory](https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md) and [Netapp Advisory](https://security.netapp.com/advisory/ntap-20210129-0006/).

Vulnerability/
CVE-2020-29509

critical

9.8

CWE

115

14/12/2020

17/9/2024

CVE-2020-29509

Q: How can an attacker exploit CVE-2020-29509?

An attacker can craft inputs that behave in conflicting ways during different stages of processing in affected downstream applications.

First published: Mon Dec 14 2020(Updated: )

The encoding/xml package in Go (all versions) does not correctly preserve the semantics of attribute namespace prefixes during tokenization round-trips, which allows an attacker to craft inputs that behave in conflicting ways during different stages of processing in affected downstream applications.

Credit: responsibledisclosure@mattermost.com responsibledisclosure@mattermost.com

Affected Software	Affected Version	How to fix
Golang Go	<1.17
Netapp Trident

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Frequently Asked Questions

What is the severity of CVE-2020-29509?
The severity of CVE-2020-29509 is critical with a CVSS score of 5.6.
Which software versions are affected by CVE-2020-29509?
All versions of Go up to (but not including) 1.17 and Netapp Trident are affected by CVE-2020-29509.
How does CVE-2020-29509 affect the encoding/xml package in Go?
CVE-2020-29509 affects the encoding/xml package in Go by not correctly preserving the semantics of attribute namespace prefixes during tokenization round-trips.
How can an attacker exploit CVE-2020-29509?
An attacker can craft inputs that behave in conflicting ways during different stages of processing in affected downstream applications.
Are there any references available for CVE-2020-29509?
Yes, you can find references for CVE-2020-29509 at the following links: [GitHub Advisory](https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md) and [Netapp Advisory](https://security.netapp.com/advisory/ntap-20210129-0006/).

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canonical/golang go
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canonical/netapp trident

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