CVE-2020-29509
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…
Does this matter?
Lower severity and a low EPSS score (2.10%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.6 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
- EPSS
- 2.10% probability · 82th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-115
- Affected
- golang/go · netapp/trident
- Source
- responsibledisclosure@mattermost.com
EPSS 2.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.mdThird Party Advisory
- https://security.netapp.com/advisory/ntap-20210129-0006/Third Party Advisory
- https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.mdThird Party Advisory
- https://security.netapp.com/advisory/ntap-20210129-0006/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.