Vulnerability details

CVE-2026-67993

CVSS 3.1

8.8High

Official description

basecamp/upright at commit efe4f2e5254ac6e57e45d2261804cca74dbbca3f contains a login cross-site request forgery issue in the static credentials callback.

CVSS scores

Score	Version	Source	Vector
8.8High	3.1	CISA ADP / Vulnrichment (CISA-ADP)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
No product information recorded.

References and advisories

https://github.com/basecamp/upright
https://github.com/basecamp/upright/blob/efe4f2e5254ac6e57e45d2261804cca74dbbca3f/app/controllers/upright/sessions_controller.rb#L3

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Details

Published: 2026-09-29
Last updated: 2026-09-30
State: Published
Assigner (CNA): mitre

Exploit prediction (EPSS)

0.14%

Probability of exploitation in 30 days

3.9%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-352
Cross-Site Request Forgery (CSRF)