How severe is CVE-2026-27576?

CVE-2026-27576 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-27576 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27576?

CVE-2026-27576 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27576?

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

Does CVE-2026-27576 have an EU (EUVD) identifier?

Yes. CVE-2026-27576 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7710.

When was CVE-2026-27576 published?

CVE-2026-27576 was published on 2026-02-21 and last updated on 2026-06-17.

CVE-2026-27576

CVE-2026-27576 is a medium-severity vulnerability in Openclaw with a CVSS 3.x base score of 4.0. 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-400.

Key facts

Severity: Medium (CVSS 3.x base score 4.0)
CVSS v4: 4.8
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-7710
Weakness: CWE-400
Affected product: Openclaw
Published: 2026-02-21
Last modified: 2026-06-17

Description

OpenClaw is a personal AI assistant. In versions 2026.2.17 and below, the ACP bridge accepts very large prompt text blocks and can assemble oversized prompt payloads before forwarding them to chat.send. Because ACP runs over local stdio, this mainly affects local ACP clients (for example IDE integrations) that send unusually large inputs. This issue has been fixed in version 2026.2.19.

Frequently asked questions

What is CVE-2026-27576?: OpenClaw is a personal AI assistant. In versions 2026.2.17 and below, the ACP bridge accepts very large prompt text blocks and can assemble oversized prompt payloads before forwarding them to chat.send. Because ACP runs over local stdio, this mainly affects local ACP clients (for example IDE integrations) that send unusually large inputs. This issue has been fixed in version 2026.2.19.
How severe is CVE-2026-27576?: CVE-2026-27576 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-27576 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27576?: CVE-2026-27576 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27576?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-27576 have an EU (EUVD) identifier?: Yes. CVE-2026-27576 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7710.
When was CVE-2026-27576 published?: CVE-2026-27576 was published on 2026-02-21 and last updated on 2026-06-17.

References

Affected products (1)

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

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