CVE-2020-29509: golang go Misinterpretation of Input
CVSS: 9.8v3.1CriticalModified
AliasesUBUNTU-CVE-2020-29509DEBIAN-CVE-2020-29509CGA-95cm-fq9q-q43xCGA-gqg5-fxgq-42jmCGA-j7j6-x74w-5c69CGA-p77j-g825-cj5gGHSA-xhqq-x44f-9fggBIT-golang-2020-29509GO-2021-0060
Published 14-12-2020Last modified 17-09-2024
Vulnerability summary
CVE-2020-29509 is a critical (CVSS 9.8) Misinterpretation of Input vulnerability in golang go. EPSS estimates a 2.10% chance of exploitation in the next 30 days, higher than 81.4% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)EPSS score
2.10%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 0 · Related 5Timeline
- 14-12-2020PublishedVulnerability first disclosed.
- 17-09-2024Last modifiedVulnerability information updated.
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 metrics
8 scores · 7 sources · 2 versionsCritical 9.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSources7 sources · 5.6–9.8
- OSV · UbuntuEcosystem advisory · calculated5.6MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:LDiffers
- OSV · DebianEcosystem advisory · calculated5.6MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:LDiffers
- OSV · WolfiEcosystem advisory · calculated5.6MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:LDiffers
- OSV · GoEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · ChainguardEcosystem advisory · calculated5.6MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:LDiffers
- NVDNIST5.6MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:LDiffers
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
2.10%
Chance of exploitation in the next 30 days
Percentile
81%
Versus all other CVEs
30-day change
0.00 pp
From 2.10% on 19-09-2026
19-09-202619-10-2026
EPSS score2.10%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu6 products
- golang-1.10All versions (No fix recorded)
- golang-1.13All versions (No fix recorded)
- golang-1.14All versions (No fix recorded)
- golang-1.6All versions (No fix recorded)
- golang-1.8All versions (No fix recorded)
Chainguard2 products
- go-1.20All versions (No fix recorded)
- go-1.21All versions (No fix recorded)
Wolfi2 products
- go-1.20All versions (No fix recorded)
- go-1.21All versions (No fix recorded)
Debian1 product
- golang-1.15All versions (No fix recorded)
Github.com/russellhaering1 product
- gosaml2< 0.6.0
Golang1 product
- goAll versions (No fix recorded) | < 1.17
Netapp1 product
- tridentna
7 vendors · 14 products
References
11 links- github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.mdX Refsource MISCAdvisoryWEBThird Party Advisory
