CVE-2026-42190 | RedwoodSDK: Same-site CSRF in in server actions

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.

Published: 2026-05-08 Last update: 2026-05-14 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-42190 is rated Low Risk (22.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.01%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-42190

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-09 — 0.01% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-42190

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 1.6 3.6 [email protected]

Weakness enumeration for CVE-2026-42190

GitHub Security Advisory for CVE-2026-42190

GHSA-m2m6-cff5-3w7c · Severity: medium · Ecosystem: npm — RedwoodSDK has Same-site CSRF through lack of origin validation in its server actions

Affected software / configurations for CVE-2026-42190

Vendor Product Version Raw CPE
redwoodjs redwoodsdk >= 1.0.1, < 1.2.3 cpe:2.3:a:redwoodjs:redwoodsdk:*:*:*:*:*:*:*:*
redwoodjs redwoodsdk 1.0.0 cpe:2.3:a:redwoodjs:redwoodsdk:1.0.0:beta50:*:*:*:*:*:*
redwoodjs redwoodsdk 1.0.0 cpe:2.3:a:redwoodjs:redwoodsdk:1.0.0:beta51:*:*:*:*:*:*
redwoodjs redwoodsdk 1.0.0 cpe:2.3:a:redwoodjs:redwoodsdk:1.0.0:beta52:*:*:*:*:*:*
redwoodjs redwoodsdk 1.0.0 cpe:2.3:a:redwoodjs:redwoodsdk:1.0.0:beta53:*:*:*:*:*:*
redwoodjs redwoodsdk 1.0.0 cpe:2.3:a:redwoodjs:redwoodsdk:1.0.0:beta53_test20260205213024:*:*:*:*:*:*
redwoodjs redwoodsdk 1.0.0 cpe:2.3:a:redwoodjs:redwoodsdk:1.0.0:beta54:*:*:*:*:*:*
redwoodjs redwoodsdk 1.0.0 cpe:2.3:a:redwoodjs:redwoodsdk:1.0.0:beta55:*:*:*:*:*:*
redwoodjs redwoodsdk 1.0.0 cpe:2.3:a:redwoodjs:redwoodsdk:1.0.0:beta56:*:*:*:*:*:*
redwoodjs redwoodsdk 1.0.0 cpe:2.3:a:redwoodjs:redwoodsdk:1.0.0:beta57:*:*:*:*:*:*
redwoodjs redwoodsdk 1.0.0 cpe:2.3:a:redwoodjs:redwoodsdk:1.0.0:beta58:*:*:*:*:*:*

References for CVE-2026-42190

cvelogic Threat Intelligence