Is CVE-2026-33580 in the CISA KEV catalog?

No. CVE-2026-33580 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-33580?

CVE-2026-33580 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2026-33580?

CVE-2026-33580 has an EPSS score of 0.36% (28th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-33580?

Upgrade openclaw to 2026.3.28 or later.

CVE & CISA-KEV Catalog

CVE-2026-33580

MEDIUM

6.5

CVSS v3

NVD

Description

OpenClaw before 2026.3.28 contains a missing rate limiting vulnerability in the Nextcloud Talk webhook authentication that allows attackers to brute-force weak shared secrets. Attackers who can reach the webhook endpoint can exploit this to forge inbound webhook events by repeatedly attempting authentication without throttling.

CWE-307

How to fix

Remediation Available

openclawNVD

Affected:< 2026.3.28Fixed in:2026.3.28CVE-2026-33580derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.36%probability of exploitation in 30 days

28thpercentile

Low risk: more likely to be exploited than 28% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

github.com

Third-Party Advisory1

vulncheck.com

Embed a live status badge for CVE-2026-33580

Markdown

[![CVE-2026-33580](https://tridentstack.com/cve/badge/CVE-2026-33580.svg)](https://tridentstack.com/cve/CVE-2026-33580)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-33580"><img src="https://tridentstack.com/cve/badge/CVE-2026-33580.svg" alt="CVE-2026-33580"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-01.