How severe is CVE-2026-28454?

CVE-2026-28454 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-28454 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28454?

CVE-2026-28454 affects Openclaw. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28454?

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-2026-28454 have an EU (EUVD) identifier?

Yes. CVE-2026-28454 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9903.

When was CVE-2026-28454 published?

CVE-2026-28454 was published on 2026-03-05 and last updated on 2026-06-17.

CVE-2026-28454

CVE-2026-28454 is a high-severity vulnerability in Openclaw with a CVSS 3.x base score of 7.5. 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-345.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.2
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9903
Weakness: CWE-345
Affected product: Openclaw
Published: 2026-03-05
Last modified: 2026-06-17

Description

OpenClaw versions prior to 2026.2.2 fail to validate webhook secrets in Telegram webhook mode (must be enabled), allowing unauthenticated HTTP POST requests to the webhook endpoint that trust attacker-controlled JSON payloads. Remote attackers can forge Telegram updates by spoofing message.from.id and chat.id fields to bypass sender allowlists and execute privileged bot commands.

Frequently asked questions

What is CVE-2026-28454?: OpenClaw versions prior to 2026.2.2 fail to validate webhook secrets in Telegram webhook mode (must be enabled), allowing unauthenticated HTTP POST requests to the webhook endpoint that trust attacker-controlled JSON payloads. Remote attackers can forge Telegram updates by spoofing message.from.id and chat.id fields to bypass sender allowlists and execute privileged bot commands.
How severe is CVE-2026-28454?: CVE-2026-28454 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-28454 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28454?: CVE-2026-28454 affects Openclaw. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28454?: 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-2026-28454 have an EU (EUVD) identifier?: Yes. CVE-2026-28454 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9903.
When was CVE-2026-28454 published?: CVE-2026-28454 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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