How severe is CVE-2026-43535?

CVE-2026-43535 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-43535 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-43535?

CVE-2026-43535 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-43535?

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

Does CVE-2026-43535 have an EU (EUVD) identifier?

Yes. CVE-2026-43535 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-27281.

When was CVE-2026-43535 published?

CVE-2026-43535 was published on 2026-05-05 and last updated on 2026-06-17.

CVE-2026-43535

CVE-2026-43535 is a medium-severity vulnerability in Openclaw with a CVSS 3.x base score of 6.8. 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-266.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v4: 7.6
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-27281
Weakness: CWE-266
Affected product: Openclaw
Published: 2026-05-05
Last modified: 2026-06-17

Description

OpenClaw before 2026.4.14 contains an authorization context reuse vulnerability in collect-mode queue batches that allows messages from different senders to inherit the final sender's authorization context. Attackers can exploit this by sending multiple queued messages to drain batches using a more privileged sender's context, causing earlier messages to execute with elevated permissions.

Frequently asked questions

What is CVE-2026-43535?: OpenClaw before 2026.4.14 contains an authorization context reuse vulnerability in collect-mode queue batches that allows messages from different senders to inherit the final sender's authorization context. Attackers can exploit this by sending multiple queued messages to drain batches using a more privileged sender's context, causing earlier messages to execute with elevated permissions.
How severe is CVE-2026-43535?: CVE-2026-43535 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-43535 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-43535?: CVE-2026-43535 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-43535?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-43535 have an EU (EUVD) identifier?: Yes. CVE-2026-43535 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-27281.
When was CVE-2026-43535 published?: CVE-2026-43535 was published on 2026-05-05 and last updated on 2026-06-17.

References

Affected products (1)

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

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