How severe is CVE-2026-28451?

CVE-2026-28451 has a CVSS 3.x base score of 8.3, rated high 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 low.

Is CVE-2026-28451 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-2026-28451?

CVE-2026-28451 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28451?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-28451 have an EU (EUVD) identifier?

Yes. CVE-2026-28451 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9900.

When was CVE-2026-28451 published?

CVE-2026-28451 was published on 2026-03-05 and last updated on 2026-06-17.

CVE-2026-28451

CVE-2026-28451 is a high-severity vulnerability in Openclaw with a CVSS 3.x base score of 8.3. 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-918.

Key facts

Severity: High (CVSS 3.x base score 8.3)
CVSS v4: 6.3
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9900
Weakness: CWE-918
Affected product: Openclaw
Published: 2026-03-05
Last modified: 2026-06-17

Description

OpenClaw versions prior to 2026.2.14 contain server-side request forgery vulnerabilities in the Feishu extension that allow attackers to fetch attacker-controlled remote URLs without SSRF protections via sendMediaFeishu function and markdown image processing. Attackers can influence tool calls through direct manipulation or prompt injection to trigger requests to internal services and re-upload responses as Feishu media.

Frequently asked questions

What is CVE-2026-28451?: OpenClaw versions prior to 2026.2.14 contain server-side request forgery vulnerabilities in the Feishu extension that allow attackers to fetch attacker-controlled remote URLs without SSRF protections via sendMediaFeishu function and markdown image processing. Attackers can influence tool calls through direct manipulation or prompt injection to trigger requests to internal services and re-upload responses as Feishu media.
How severe is CVE-2026-28451?: CVE-2026-28451 has a CVSS 3.x base score of 8.3, rated high 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 low.
Is CVE-2026-28451 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-2026-28451?: CVE-2026-28451 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28451?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-28451 have an EU (EUVD) identifier?: Yes. CVE-2026-28451 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9900.
When was CVE-2026-28451 published?: CVE-2026-28451 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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