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Cloudflare

Records70All Threatist records
Exploited (KEV)0None in CISA KEV
CVSS critical5CVSS 9.0–10.0
CVSS high44CVSS 7.0–8.9

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70 records

Priority MEDIUM 51

LZ4 bindings use a deprecated C API that is vulnerable to memory corruption, which could lead to arbitrary code execution if called with untrusted user input.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.01153 Published 2022-12-27 Fixed in 0.0.0-20140711154735-199f5f787806 CWE-787
Priority MEDIUM 49

OctoRPKI does not escape a URI with a filename containing "..", this allows a repository to create a file, (ex.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.04199 Published 2021-11-11 Fixed in 1.4.3, 1.4.4 CWE-20
Priority MEDIUM 48

An unchecked read in NTP server in github.com/cloudflare/cfnts prior to commit 783490b https://github.com/cloudflare/cfnts/commit/783490b913f05e508a492cd7b02e3c4ec2297b71 enabled a remote attacker to trigger a panic by s…

CVSS 3.1HIGH 8.6 Network No auth No interaction EPSS 0.02237 Published 2023-06-14 Fixed CWE-119
Priority MEDIUM 47

An HTTP request smuggling vulnerability (CWE-444) was found in Pingora's handling of HTTP/1.1 connection upgrades.

CVSS 4.0CRITICAL 9.3 Network No auth No interaction EPSS 0.00669 Published 2026-03-04 Fixed in 0.8.0 CWE-444
Priority MEDIUM 44

Cloudflare quiche was discovered to be vulnerable to an infinite loop when sending packets containing RETIRE_CONNECTION_ID frames.

CVSS 4.0HIGH 8.7 Network No auth No interaction EPSS 0.00449 Published 2025-08-07 Fixed in 0.24.5 CWE-835
Priority MEDIUM 42

support_uri parameter in the WARP client local settings file (mdm.xml) lacked proper validation which allowed for privilege escalation and launching an arbitrary executable on the local machine upon clicking on the "Send…

CVSS 3.1HIGH 8.9 Network Low privileges User interaction EPSS 0.00714 Published 2023-01-11 No fix listed CWE-20
Priority MEDIUM 41

Description Cloudflare was recently notified by external researchers of vulnerabilities in this archived repository, including a remote code execution issue in `src/index.ts` reachable from certain GitHub Actions workflo…

CVSS 3.1HIGH 8.8 Network No auth User interaction EPSS 0.0068 Published 2026-08-12 No fix listed CWE-1104
Priority MEDIUM 41

Impact Cloudflare quiche was discovered to be vulnerable to incorrect congestion window growth, which could cause it to send data at a rate faster than the path might actually support.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00982 Published 2025-06-18 Fixed in 0.24.4 CWE-770
Priority MEDIUM 41

sflow decode package does not employ sufficient packet sanitisation which can lead to a denial of service attack.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00971 Published 2022-09-30 Fixed in 3.4.4 CWE-20
Priority MEDIUM 40

Summary Before version 0.9.0, the HTTP/1 upstream path in pingora-proxy passed the downstream request through upstream_request_filter and wrote it to the upstream without removing the client's Connection header, other ho…

CVSS 3.1HIGH 8.7 Network No auth No interaction EPSS 0.00425 Published 2026-10-20 Fixed in 0.9.0 CWE-444
Priority MEDIUM 40

Summary Cloudflare quiche's HTTP/3 layer was discovered to be vulnerable to resource exhaustion (i.e., memory) by means of specially crafted HTTP/3 frames.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00532 Published 2026-07-14 Fixed in 0.29.3 CWE-400
TI-2023-03927 CVE-2023-4241 · GHSA-c3x7-354f-4p2x

lol-html panics on certain HTML inputs

Priority MEDIUM 40

lol-html can cause panics on certain HTML inputs.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00687 Published 2023-08-16 Fixed in 1.1.1 CWE-20
Priority LOW 39

Summary Before version 0.8.1, Pingora's HTTP/2 server used the h2 crate's default limits unless the application set its own 16 MiB decoded header-list size and no limit on concurrent streams.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00429 Published 2026-10-20 Fixed in 0.8.1 CWE-770
Priority LOW 39

SummaryA command injection vulnerability (CWE-78) has been found to exist in the `wrangler pages deploy` command.

CVSS 4.0HIGH 7.7 Network Low privileges No interaction EPSS 0.01514 Published 2026-01-20 Fixed in 3.114.17, 4.59.1 CWE-20
Priority LOW 39

Cloudflare WARP client for Windows (up to v2023.3.381.0) allowed a malicious actor to remotely access the warp-svc.exe binary due to an insufficient access control policy on an IPC Named Pipe.

CVSS 3.1HIGH 7.3 Network No auth No interaction EPSS 0.00754 Published 2023-06-20 Fixed in 2023.3.381.0 CWE-284
Priority LOW 38

Sending specially crafted HTTP requests to Miniflare's server could result in arbitrary HTTP and WebSocket requests being sent from the server.

CVSS 3.1HIGH 8.1 Adjacent network No auth No interaction EPSS 0.00552 Published 2023-12-29 Fixed in 3.20231030.2 CWE-918
Priority LOW 38

Using warp-cli command "add-trusted-ssid", a user was able to disconnect WARP client and bypass the "Lock WARP switch" feature resulting in Zero Trust policies not being enforced on an affected endpoint.

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.0046 Published 2022-10-28 Fixed in 2022.8.857, 2022.8.936 +1 CWE-862
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