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CVE-2021-22133

13
FAUCET Score

CVE-2021-22133 affects Elastic APM agent for Go versions prior to 1.11.0, where sensitive HTTP header information can be leaked during an application panic due to improper sanitization before being sent to the APM server. This vulnerability has a low CVSS score of 2.4, indicating a low severity with an adjacent network attack vector and low impact on confidentiality. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.11.0CPE matchmatch criteria
cpe:2.3:a:elastic:apm_agent:*:*:*:*:*:go:*:*

CVSS Data

CVSS version used by this source: 3.1

2.4LOW

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
0.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.52%
Probability of exploitation in next 30 days
EPSS Percentile
41.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0052 is in the 67th percentile among its peer group of 13 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (5)

gopatch availablevia ghsa
Product: go.elastic.co/apmFixed in: 1.11.0
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
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 16.2Fixed in: osp-director-provisioner-container
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 16.2Fixed in: rhosp-rhel8/osp-director-downloader
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 16.2Fixed in: rhosp-rhel8/osp-director-operator

Vendor Advisories (2)

goGHSA-qqc5-rgcc-cjqhlow

Information Disclosure in go.elastic.co/apm

May 18, 2021
redhatCVE-2021-22133Low

go.elastic.co/apm: leaks sensitive HTTP headers during panic

Feb 4, 2021

References

discuss.elastic.co / t/elastic-apm-agent-for-go-1-11-0-security-update/263252
Release NotesVendor Advisory