Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2020-28852

25
FAUCET Score

CVE-2020-28852 is a "slice bounds out of range" panic vulnerability in the x/text package of Go versions prior to v0.3.5, specifically impacting the language.ParseAcceptLanguage function when processing BCP 47 tags. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating a network-exploitable flaw with low attack complexity that can lead to a denial of service. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.3.5CPE matchmatch criteria
cpe:2.3:a:golang:text:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.71%
Probability of exploitation in next 30 days
EPSS Percentile
74.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0171 is in the 57th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (29)

microsoftpatch availablevia msrc
Product: 20086-17084Fixed in: 4.0.2-1
microsoftpatch availablevia msrc
Product: 18823-17084Fixed in: 4.0.2-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 x64Fixed in: 4.0.2-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 ARMFixed in: 4.0.2-1
microsoftpatch availablevia msrc
Product: azl3 multus 3.8-13 on Azure Linux 3.0Fixed in: 4.0.2-1
microsoftpatch availablevia msrc
Product: azl3 multus 4.0.2-1 on Azure Linux 3.0Fixed in: 4.0.2-1
redhatpatch availablevia redhat_api
Product: OpenShift Service Mesh 2.0Fixed in: servicemesh-0:2.0.9-3.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: git-lfs-0:2.13.3-3.el8_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: podman-2:4.2.0-3.el9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.10Fixed in: openshift4-wincw/windows-machine-config-operator-bundle:v5.0.0-5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.10Fixed in: openshift4-wincw/windows-machine-config-rhel8-operator:5.0.0-5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.8Fixed in: openshift4/ose-thanos-rhel8:v4.8.0-202106291913.p0.git.c358e96.assembly.stream
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Storage 3Fixed in: heketi
redhatvendor investigatingvia redhat_api
Product: Red Hat Openshift Container Storage 4Fixed in: ocs4/cephcsi-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Openshift Container Storage 4Fixed in: ocs4/ocs-rhel8-operator
redhatvendor investigatingvia redhat_api
Product: Red Hat Storage 3Fixed in: rhgs3/rhgs-gluster-block-prov-rhel7
redhatvendor investigatingvia redhat_api
Product: Red Hat Storage 3Fixed in: grafana
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: container-tools:rhel8/podman
redhatno patchvia redhat_api
Product: Red Hat Quay 3Fixed in: quay/clair-rhel8
redhatno patchvia redhat_api
Product: Red Hat Advanced Cluster Management for Kubernetes 2Fixed in: go
redhatno patchvia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-baremetal-installer-rhel8
redhatno patchvia redhat_api
Product: OpenShift Service Mesh 2.0Fixed in: servicemesh-cni
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: container-tools:2.0/podman
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Virtualization 2Fixed in: kubevirt-metrics-collector
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Container Platform 4Fixed in: openshift4/ose-installer
redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-git227-git-lfs
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: container-tools:rhel8/buildah
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: container-tools:1.0/buildah
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: container-tools:2.0/buildah

Vendor Advisories (3)

microsoft2024-Sep/CVE-2020-28852

CVE-2020-28852

Sep 10, 2024
microsoft2021-Jan/CVE-2020-28852Important

In x/text in Go before v0.3.5 a "slice bounds out of range" panic occurs in language.ParseAcceptLanguage while processing a BCP 47 tag. (x/text/language is supposed to be able to parse an HTTP Accept-Language header.)

Jan 12, 2021
redhatCVE-2020-28852Moderate

golang.org/x/text: Panic in language.ParseAcceptLanguage while processing bcp47 tag

Jan 2, 2021

References

github.com / golang/go/issues/42536
ExploitIssue TrackingThird Party Advisory
security.netapp.com / advisory/ntap-20210212-0004
Third Party Advisory