CVE-2021-33195

HIGH
7.3
CVSS Score
Published: August 2, 2021 at 06:51 PM UTC
Updated: June 17, 2026 at 03:54 AM UTC
2 products affected across 2 vendorsGoCloud Insights Telegraf Agent

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Severity
HIGH7.3
Exploit prediction
EPSS 3%

Description

Go before 1.15.13 and 1.16.x before 1.16.5 has functions for DNS lookups that do not validate replies from DNS servers, and thus a return value may contain an unsafe injection (e.g., XSS) that does not conform to the RFC1035 format.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.15.131.16.0 ≤ v < 1.16.5
Affected range stops below 1.15.13, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.16.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

x_refsource_MISCThird Party Advisory
https://groups.google.com/g/golang-announce
x_refsource_MISCExploitPatchThird Party Advisory
https://groups.google.com/g/golang-announce/c/RgCMkAEQjSI
Vendor Advisoryx_refsource_GENTOOThird Party Advisory
https://security.gentoo.org/glsa/202208-02

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-74

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