EUVD-2026-63208
GHSA-2j3p-r8gw-592c
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/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
Network-delivered XSS with no attacker privileges required, victim interaction mandatory, scope changes to browser context, and only limited confidentiality and integrity impact.
Primary rating from Vendor (jpcert).
CVSS VectorVendor: jpcert
Lifecycle Timeline
2DescriptionCVE.org
F-RevoCRM contains a cross-site scripting vulnerability. If a user views a crafted page while logged in to the affected product, unintended operations may be performed.
AnalysisAI
Cross-site scripting in F-RevoCRM versions 7.3.0 through 8.0.3 enables remote attackers to inject and execute malicious client-side scripts in the browser of an authenticated user who is lured to a crafted page. The CVSS S:C (scope changed) metric confirms the injected script operates beyond the application's trust boundary, enabling session hijacking, credential theft, or unauthorized CRM operations performed under the victim's identity. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to be actively authenticated to F-RevoCRM (versions 7.3.0 through 8.0.3) at the time of the attack, confirmed by CVSS UI:R - the attack fails entirely if the target user is not logged in when they visit the crafted page. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 6.1 Medium score is consistent with a reflected or stored XSS requiring no attacker authentication (PR:N) but dependent on victim interaction (UI:R). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade F-RevoCRM to a version beyond 8.0.3 per the vendor advisory at https://f-revocrm.jp/2026/08/47374/; the advisory should specify the exact patched release version, which has not been independently confirmed in available data. … Detailed patch versions, workarounds, and compensating controls in full report. |
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F-RevoCRM version7.3.7 and version7.3.8 contains an OS command injection vulnerability. Rated critical severity (CVSS 9.
F-RevoCRM 7.3 series prior to version7.3.8 contains a cross-site scripting vulnerability. Rated medium severity (CVSS 5.
Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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