How severe is CVE-2026-33580?

CVE-2026-33580 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-33580 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33580?

CVE-2026-33580 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33580?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-33580 have an EU (EUVD) identifier?

Yes. CVE-2026-33580 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17439.

When was CVE-2026-33580 published?

CVE-2026-33580 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-33580

CVE-2026-33580 is a medium-severity vulnerability in Openclaw with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-307.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 6.3
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17439
Weakness: CWE-307
Affected product: Openclaw
Published: 2026-03-31
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-33580?: 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.
How severe is CVE-2026-33580?: CVE-2026-33580 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-33580 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33580?: CVE-2026-33580 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33580?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-33580 have an EU (EUVD) identifier?: Yes. CVE-2026-33580 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17439.
When was CVE-2026-33580 published?: CVE-2026-33580 was published on 2026-03-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*

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