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CVE-2020-29510

20
FAUCET Score

CVE-2020-29510 is a medium-severity vulnerability in the Go encoding/xml package (versions 1.15 and earlier), affecting products like golang go and NetApp Trident. It allows attackers to craft XML inputs that behave inconsistently during different processing stages, potentially leading to authentication bypass, as highlighted by a BleepingComputer article on SAML bypass. With a CVSS score of 5.6, this vulnerability has a network attack vector and low impact on confidentiality, integrity, and availability, but requires high attack complexity. There is no evidence of active exploitation, nor are there public exploits available in Metasploit or ExploitDB, and community discussion is minimal.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.15CPE matchmatch criteria
cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:trident:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.05%
Probability of exploitation in next 30 days
EPSS Percentile
79.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0205 is in the 65th percentile among its peer group of 19,956 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (2)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: golang
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: go-toolset:rhel8/golang

Vendor Advisories (1)

redhatCVE-2020-29510Low

go: encoding/xml: XML directives instability

Dec 14, 2020

References

github.com / mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md
Third Party Advisory
security.netapp.com / advisory/ntap-20210129-0006
Third Party Advisory