CVE-2026-28474

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.50% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 42.6% of scored records. A rank, not a probability.

NVD base score

9.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Analyzed. NVD last modified this record on 2026-09-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-03-05 21:59Z7 MO AGO

Last updated

2026-09-17 17:54Z1 MO AGO

Reserved

2026-02-27

Assigning CNA

VulnCheck

Record state

PUBLISHED

Severity

Critical (CVSS 9.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Weaknesses

• CWE-863Incorrect AuthorizationClass

Data version

5.2

Document digest

5c6a08b552f3366ac0e1fc06ff25effdddebfc2e6ff9e27514a6d1535c3b84f2

• github.comGitHub Security Advisory (GHSA-r5h9-vjqc-hq3r)https://github.com/openclaw/openclaw/security/advisories/GHSA-r5h9-vjqc-hq3rvendor-advisory
• github.comPatch Commit #1https://github.com/openclaw/openclaw/commit/6b4b6049b47c3329a7014509594647826669892dpatch
• www.vulncheck.comVulnCheck Advisory: OpenClaw Nextcloud Talk < 2026.2.6 - Allowlist Bypass via actor.name Display Name Spoofinghttps://www.vulncheck.com/advisories/openclaw-nextcloud-talk-allowlist-bypass-via-actorname-display-name-spoofingthird-party-advisory