How severe is CVE-2026-34505?

CVE-2026-34505 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-2026-34505 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34505?

CVE-2026-34505 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34505?

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

Does CVE-2026-34505 have an EU (EUVD) identifier?

Yes. CVE-2026-34505 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17389.

When was CVE-2026-34505 published?

CVE-2026-34505 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-34505

CVE-2026-34505 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: 6.9
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17389
Weakness: CWE-307
Affected product: Openclaw
Published: 2026-03-31
Last modified: 2026-06-17

Description

OpenClaw before 2026.3.12 applies rate limiting only after successful webhook authentication, allowing attackers to bypass rate limits and brute-force webhook secrets. Attackers can submit repeated authentication requests with invalid secrets without triggering rate limit responses, enabling systematic secret guessing and subsequent forged webhook submission.

Frequently asked questions

What is CVE-2026-34505?: OpenClaw before 2026.3.12 applies rate limiting only after successful webhook authentication, allowing attackers to bypass rate limits and brute-force webhook secrets. Attackers can submit repeated authentication requests with invalid secrets without triggering rate limit responses, enabling systematic secret guessing and subsequent forged webhook submission.
How severe is CVE-2026-34505?: CVE-2026-34505 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-2026-34505 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34505?: CVE-2026-34505 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34505?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-34505 have an EU (EUVD) identifier?: Yes. CVE-2026-34505 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17389.
When was CVE-2026-34505 published?: CVE-2026-34505 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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