Vulnerability Reportcloudflare/cloudflared:2026.8.1

cloudflare/cloudflared:1908-e341ffbed387cloudflare/cloudflared:1908-e341ffbcloudflare/cloudflared:2026.8.1
digestsha256:d9ff527dc19799e24d3689058161fb01e752a24be1823577bae54c9c2489275f

Executive Summary

Last scanned:

Threat Score
25/100NEEDS ATTENTION
Reputation
RELIABLE

This image is acceptable for production, but remediating the identified vulnerabilities is recommended to reduce the attack surface. Scanning reports 38 exposed-surface findings, though none are high severity — the maximum is 6.38 and only three cross the 6.0 threshold, all denial-of-service issues in OpenSSL QUIC (CVE-2026-14456) and gRPC-Go (CVE-2026-84445). In this container cloudflared runs as a client process, so the OpenSSL QUIC server code path behind CVE-2026-14456 is not exercised, and CVE-2026-84445 only affects servers created with xds.NewGRPCServer(); keeping QUIC server mode and xds-based gRPC serving disabled fully avoids both. The 16 post-exploit-only findings are low severity (max 3.53) and do not change the verdict, and the image itself is well-trusted (226M+ pulls, digest-pinned) from cloudflare.

Vulnerabilities

Vulnerability Log

54 total
CVE IDAdjusted SeverityPackageExploit ProbabilityRisk Context
CVE-2026-14456MEDIUM6.38
libssl3t64
3.5.6-1~deb13u2
fixed in 3.5.7-1~deb13u2
0.7%
Theoretical Threat
Directly Exposed
CVE-2026-63075MEDIUM6.38
libssl3t64
3.5.6-1~deb13u2
fixed in 3.5.7-1~deb13u2
0.8%
Theoretical Threat
Directly Exposed
CVE-2026-84445MEDIUM6.38
google.golang.org/grpc
v1.83.0
fixed in 1.82.2, 1.83.2, 1.84.0-dev.0.20260825144003-d5a41119e0e3, 1.85.0-dev.0.20260825072537-93e31b48545e
0.6%
Theoretical Threat
Directly Exposed
CVE-2026-86805MEDIUM5.95
libc6
2.41-12+deb13u3
No fix yet
0.1%
Theoretical Threat
Directly Exposed
CVE-2026-95818MEDIUM5.95
libc6
2.41-12+deb13u3
No fix yet
0.1%
Theoretical Threat
Directly Exposed
CVE-2026-63073MEDIUM5.9
libssl3t64
3.5.6-1~deb13u2
fixed in 3.5.7-1~deb13u2
1.2%
Low-Moderate Risk
Directly Exposed
CVE-2026-19499MEDIUM5.78
libc6
2.41-12+deb13u3
No fix yet
0.3%
Theoretical Threat
Directly Exposed
CVE-2026-56854MEDIUM5.78
golang.org/x/crypto
v0.53.0
fixed in 0.55.0
0.4%
Theoretical Threat
Directly Exposed
CVE-2026-39821MEDIUM5.58
stdlib
v1.26.4
fixed in 1.25.13, 1.26.6, 1.27.0-rc.3
0.7%
Theoretical Threat
Directly ExposedContext importance: MEDIUM
CVE-2026-6238MEDIUM5.52
libc6
2.41-12+deb13u3
No fix yet
0.4%
Theoretical Threat
Directly Exposed
CVE-2019-1010024MEDIUM5.3
libc6
2.41-12+deb13u3
No fix yet
3.2%
Low-Moderate Risk
Directly Exposed
CVE-2019-1010025MEDIUM5.3
libc6
2.41-12+deb13u3
No fix yet
2.3%
Low-Moderate Risk
Directly Exposed
CVE-2026-33818MEDIUM5.1
stdlib
v1.26.4
fixed in 1.25.13, 1.26.6, 1.27.0-rc.3
0.6%
Theoretical Threat
Directly ExposedContext importance: MEDIUM
CVE-2026-56860MEDIUM5.1
stdlib
v1.26.4
fixed in 1.25.13, 1.26.6, 1.27.0-rc.3
0.5%
Theoretical Threat
Directly ExposedContext importance: MEDIUM
CVE-2026-5435MEDIUM5.02
libc6
2.41-12+deb13u3
No fix yet
0.4%
Theoretical Threat
Directly Exposed
CVE-2026-6791MEDIUM5.02
libc6
2.41-12+deb13u3
No fix yet
0.3%
Theoretical Threat
Directly Exposed
CVE-2026-77117MEDIUM5.02
libc6
2.41-12+deb13u3
No fix yet
0.4%
Theoretical Threat
Directly Exposed
CVE-2026-80489MEDIUM5.02
libc6
2.41-12+deb13u3
No fix yet
0.4%
Theoretical Threat
Directly Exposed
CVE-2026-6368MEDIUM4.67
libc6
2.41-12+deb13u3
No fix yet
0.1%
Theoretical Threat
Directly Exposed
CVE-2026-27171MEDIUM4.67
zlib1g
1:1.3.dfsg+really1.3.1-1+b1
No fix yet
0.2%
Theoretical Threat
Directly Exposed
CVE-2026-8674MEDIUM4.5
libc6
2.41-12+deb13u3
No fix yet
0.3%
Theoretical Threat
Directly Exposed
CVE-2026-56855MEDIUM4.5
golang.org/x/crypto
v0.53.0
fixed in 0.56.0
0.5%
Theoretical Threat
Directly Exposed
CVE-2026-78662MEDIUM4.5
golang.org/x/crypto
v0.53.0
fixed in 0.56.0
0.4%
Theoretical Threat
Directly Exposed
CVE-2026-42505MEDIUM4.5
stdlib
v1.26.4
fixed in 1.25.12, 1.26.5, 1.27.0-rc.2
0.4%
Theoretical Threat
Directly Exposed
CVE-2026-5450MEDIUM4.25
libc6
2.41-12+deb13u3
fixed in 2.41-12+deb13u4
0.7%
Theoretical Threat
Directly Exposed
CVE-2026-5928MEDIUM4.25
libc6
2.41-12+deb13u3
fixed in 2.41-12+deb13u4
0.5%
Theoretical Threat
Directly Exposed
CVE-2026-18374MEDIUM4.17
libc6
2.41-12+deb13u3
No fix yet
0.1%
Theoretical Threat
Directly Exposed
CVE-2010-4756MEDIUM4
libc6
2.41-12+deb13u3
No fix yet
2.6%
Low-Moderate Risk
Directly Exposed
CVE-2026-19542LOW3.57
libc6
2.41-12+deb13u3
No fix yet
0.2%
Theoretical Threat
Directly Exposed
CVE-2026-89092LOW3.57
libc6
2.41-12+deb13u3
No fix yet
0.3%
Theoretical Threat
Directly Exposed
CVE-2019-1010022LOW3.53
libc6
2.41-12+deb13u3
No fix yet
3.2%
Low-Moderate Risk
Post-Exploit
CVE-2019-1010023LOW3.17
libc6
2.41-12+deb13u3
No fix yet
3.0%
Low-Moderate Risk
Post-Exploit
CVE-2026-75803LOW3.15
libssl3t64
3.5.6-1~deb13u2
fixed in 3.5.7-1~deb13u2
0.2%
Theoretical Threat
Directly Exposed
CVE-2018-20796LOW2.7
libc6
2.41-12+deb13u3
No fix yet
5.8%
Low-Moderate Risk
Post-Exploit
CVE-2019-9192LOW2.7
libc6
2.41-12+deb13u3
No fix yet
2.4%
Low-Moderate Risk
Post-Exploit
CVE-2026-18798LOW2.7
libssl3t64
3.5.6-1~deb13u2
fixed in 3.5.7-1~deb13u2
1.5%
Low-Moderate Risk
Post-Exploit
CVE-2026-63072LOW2.7
libssl3t64
3.5.6-1~deb13u2
fixed in 3.5.7-1~deb13u2
1.0%
Low-Moderate Risk
Post-Exploit
CVE-2026-63076LOW2.7
libssl3t64
3.5.6-1~deb13u2
fixed in 3.5.7-1~deb13u2
1.8%
Low-Moderate Risk
Post-Exploit
CVE-2026-14457LOW2.7
libssl3t64
3.5.6-1~deb13u2
fixed in 3.5.7-1~deb13u2
1.0%
Low-Moderate Risk
Post-Exploit
CVE-2026-54874LOW2.7
libssl3t64
3.5.6-1~deb13u2
fixed in 3.5.7-1~deb13u2
1.3%
Low-Moderate Risk
Post-Exploit
CVE-2026-56858LOW2.48
stdlib
v1.26.4
fixed in 1.25.13, 1.26.6, 1.27.0-rc.3
0.3%
Theoretical Threat
Post-Exploit
CVE-2026-39822LOW2.39
stdlib
v1.26.4
fixed in 1.25.12, 1.26.5, 1.27.0-rc.2
0.2%
Theoretical Threat
Post-Exploit
CVE-2026-63074LOW2.29
libssl3t64
3.5.6-1~deb13u2
fixed in 3.5.7-1~deb13u2
0.6%
Theoretical Threat
Post-Exploit
CVE-2026-46600LOW2.29
stdlib
v1.26.4
fixed in 1.26.6, 1.27.0-rc.3
0.6%
Theoretical Threat
Post-Exploit
CVE-2026-56853LOW2.29
stdlib
v1.26.4
fixed in 1.25.13, 1.26.6, 1.27.0-rc.3
0.6%
Theoretical Threat
Post-Exploit
CVE-2026-56859LOW2.29
stdlib
v1.26.4
fixed in 1.25.13, 1.26.6, 1.27.0-rc.3
0.6%
Theoretical Threat
Post-Exploit
CVE-2026-56862LOW2.29
stdlib
v1.26.4
fixed in 1.25.13, 1.26.6, 1.27.0-rc.3
0.6%
Theoretical Threat
Post-Exploit
CVE-2026-85091NONE0
zlib1g
1:1.3.dfsg+really1.3.1-1+b1
No fix yet
0.6%
Theoretical Threat
Not Applicable
GHSA-w67g-5rqw-f597NONE0
github.com/gorilla/websocket
v1.5.0
fixed in 1.5.3
—
Not Applicable
CVE-2026-81870NONE0
go.opentelemetry.io/otel/exporters/otlp/otlptrace
v1.43.0
fixed in 1.45.0
0.2%
Theoretical Threat
Not Applicable
CVE-2026-81870NONE0
go.opentelemetry.io/otel/sdk
v1.44.0
fixed in 1.45.0
0.2%
Theoretical Threat
Not Applicable
GO-2026-5932NONE0
golang.org/x/crypto
v0.53.0
No fix yet
—
Not Applicable
CVE-2026-84304NONE0
google.golang.org/grpc
v1.83.0
fixed in 1.83.1
0.6%
Theoretical Threat
Not Applicable
CVE-2026-84303NONE0
google.golang.org/grpc
v1.83.0
fixed in 1.83.1
0.3%
Theoretical Threat
Not Applicable

Reachability analysis

Which CVEs are actually reachable — is the vulnerable code even linked and callable.

Locked

Runtime verification

Live-container probes: default user, writable paths, capabilities, exposed ports.

Locked

Supply chain analysis

Base-image lineage, package provenance and signatures — nothing slipped in unnoticed.

Locked

Hardening recommendations

A step-by-step hardened build plan, with parity tests proving nothing breaks.

Locked

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