CVE-2026-42190

Description

RedwoodSDK is a server-first React framework. From version 1.0.0-beta.50 to before version 1.2.3, server actions in rwsdk apply HTTP method enforcement but no origin validation. A request originating from a different origin that the browser treats as same-site can invoke a server action with the victim's session cookie attached. This issue has been patched in version 1.2.3.

CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS — Exploit Prediction

0.0002

Probability of exploitation

0.04%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-352 Cross-Site Request Forgery

Affected Products

Vendor	Product	Versions
redwoodjs	redwoodsdk	1.0.1 — 1.2.3
redwoodjs	redwoodsdk	All
redwoodjs	redwoodsdk	All
redwoodjs	redwoodsdk	All
redwoodjs	redwoodsdk	All
redwoodjs	redwoodsdk	All
redwoodjs	redwoodsdk	All
redwoodjs	redwoodsdk	All
redwoodjs	redwoodsdk	All
redwoodjs	redwoodsdk	All
redwoodjs	redwoodsdk	All

References

Advisories & Patches

https://github.com/redwoodjs/sdk/security/advisories/GHSA-m2m6-cff5-3w7c

Other References

https://github.com/redwoodjs/sdk/releases/tag/v1.2.3

Frequently Asked Questions

What is CVE-2026-42190? +

RedwoodSDK is a server-first React framework. From version 1.0.0-beta.50 to before version 1.2.3, server actions in rwsdk apply HTTP method enforcement but no origin validation. A request originating from a different origin that the browser treats as same-site can invoke a server action with the victim's session cookie attached. This issue has been patched in version 1.2.3. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-42190? +

CVE-2026-42190 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0002, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-42190? +

CVE-2026-42190 affects products from redwoodjs, specifically: redwoodsdk. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-42190? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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