Vulnerability in Golang Go

CVE-2020-29511

The encoding/xml package in Go (all versions) does not correctly preserve the semantics of element 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.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.020 (79.6th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2020-29511: held from 0.019 to 0.020.

EPSS over last 30 days · oldest: 0.019 · newest: 0.020 · change: +0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-29511?
CVE-2020-29511 is a critical-severity vulnerability in Golang Go, classified under CWE-115. CVSS score: 9.8/10. Published 2020-12-14.
How severe is CVE-2020-29511?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-29511 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.