CVE-2026-67993 Basecamp Upright - Cross-Site Request Forgery

Basecamp Upright contains a cross-site request forgery caused by static credentials callback in login, letting attackers perform unauthorized login actions, exploit requires victim interaction.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.15% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Cross-Site Request Forgery
Impact
Cross Site Request Forgery
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
29 September 2026
Updated
15 October 2026
Weakness
CWE-352

Vendor fix

Update to the latest version with the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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