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CVE-2020-8660

MEDIUM
5.3
CVSS Score
Published: March 4, 2020 at 09:10 PM UTC
Updated: June 17, 2026 at 03:26 AM UTC
1 product affected across 1 vendorEnvoy

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.6%

Description

CNCF Envoy through 1.13.0 TLS inspector bypass. TLS inspector could have been bypassed (not recognized as a TLS client) by a client using only TLS 1.3. Because TLS extensions (SNI, ALPN) were not inspected, those connections might have been matched to a wrong filter chain, possibly bypassing some security restrictions in the process.

Affected

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

Envoy· Envoyproxy
95%
v < 1.12.31.13.0 ≤ v < 1.13.1
Affected range stops below 1.12.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.13.1, 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:

Patch and advisory references

References (3)

Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2020:0734
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/envoyproxy/envoy/security/advisories/GHSA-c4g8-7grc-5wvx
x_refsource_CONFIRMx_refsource_MISCVendor Advisory
Source: [email protected]
https://www.envoyproxy.io/docs/envoy/v1.13.1/intro/version_history

CVSS

5.3MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-345

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