How severe is CVE-2026-28464?

CVE-2026-28464 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-28464 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28464?

CVE-2026-28464 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28464?

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

Does CVE-2026-28464 have an EU (EUVD) identifier?

Yes. CVE-2026-28464 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9910.

When was CVE-2026-28464 published?

CVE-2026-28464 was published on 2026-03-05 and last updated on 2026-06-17.

CVE-2026-28464

CVE-2026-28464 is a medium-severity vulnerability in Openclaw with a CVSS 3.x base score of 5.9. 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-208.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v4: 8.2
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9910
Weakness: CWE-208
Affected product: Openclaw
Published: 2026-03-05
Last modified: 2026-06-17

Description

OpenClaw versions prior to 2026.2.12 use non-constant-time string comparison for hook token validation, allowing attackers to infer tokens through timing measurements. Remote attackers with network access to the hooks endpoint can exploit timing side-channels across multiple requests to gradually determine the authentication token.

Frequently asked questions

What is CVE-2026-28464?: OpenClaw versions prior to 2026.2.12 use non-constant-time string comparison for hook token validation, allowing attackers to infer tokens through timing measurements. Remote attackers with network access to the hooks endpoint can exploit timing side-channels across multiple requests to gradually determine the authentication token.
How severe is CVE-2026-28464?: CVE-2026-28464 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-28464 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28464?: CVE-2026-28464 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28464?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-28464 have an EU (EUVD) identifier?: Yes. CVE-2026-28464 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9910.
When was CVE-2026-28464 published?: CVE-2026-28464 was published on 2026-03-05 and last updated on 2026-06-17.

References

Affected products (1)

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

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