How severe is CVE-2026-35621?

CVE-2026-35621 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-35621 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35621?

CVE-2026-35621 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35621?

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

Does CVE-2026-35621 have an EU (EUVD) identifier?

Yes. CVE-2026-35621 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21434.

When was CVE-2026-35621 published?

CVE-2026-35621 was published on 2026-04-10 and last updated on 2026-06-17.

CVE-2026-35621

CVE-2026-35621 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-862.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 7.1
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21434
Weakness: CWE-862
Affected product: Openclaw
Published: 2026-04-10
Last modified: 2026-06-17

Description

OpenClaw before 2026.3.24 contains a privilege escalation vulnerability where the /allowlist command fails to re-validate gateway client scopes for internal callers, allowing operator.write-scoped clients to mutate channel authorization policy. Attackers can exploit chat.send to build an internal command-authorized context and persist channel allowFrom and groupAllowFrom policy changes reserved for operator.admin scope.

Frequently asked questions

What is CVE-2026-35621?: OpenClaw before 2026.3.24 contains a privilege escalation vulnerability where the /allowlist command fails to re-validate gateway client scopes for internal callers, allowing operator.write-scoped clients to mutate channel authorization policy. Attackers can exploit chat.send to build an internal command-authorized context and persist channel allowFrom and groupAllowFrom policy changes reserved for operator.admin scope.
How severe is CVE-2026-35621?: CVE-2026-35621 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-35621 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35621?: CVE-2026-35621 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35621?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-35621 have an EU (EUVD) identifier?: Yes. CVE-2026-35621 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21434.
When was CVE-2026-35621 published?: CVE-2026-35621 was published on 2026-04-10 and last updated on 2026-06-17.

References

Affected products (1)

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

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