CVE-2026-42190: RedwoodSDK is a server-first React framework

Routine

MEDIUM 5.3UPGRADE

CVE-2026-42190 is a medium-severity flaw (CVSS 5.3) affecting redwoodsdk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 99%)
CISA exploited list	No
Weakness	CWE-352
Published	2026-05-08
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: redwoodjs

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-08 20:16 UTCPublished CVE record published
2026-10-26 00:10 UTCUpdated Record last modified

redwoodjs redwoodsdk UPGRADE

Affected: >= 1.0.1 and < 1.2.3 · 1.0.0 beta50 · 1.0.0 beta51 · 1.0.0 beta52 · 1.0.0 beta53 · 1.0.0 beta53_test20260205213024 · 1.0.0 beta54 · 1.0.0 beta55

Fixed in: 1.2.3

Safe to downgrade to: a release before 1.0.0

1. Check installed version

apt-cache policy redwoodsdk || rpm -q redwoodsdk || redwoodsdk --version

2. UPGRADE to 1.2.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade redwoodsdk

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade redwoodsdk

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.0.0 (Debian / Ubuntu)

apt-cache madison redwoodsdk sudo apt install redwoodsdk=<VERSION_BEFORE_1.0.0> sudo apt-mark hold redwoodsdk

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list redwoodsdk sudo dnf downgrade redwoodsdk-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add redwoodsdk

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-42190?

redwoodsdk: upgrade to 1.2.3. Exact commands for each OS are on this page.

Is CVE-2026-42190 being exploited?

CVE-2026-42190 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-42190 affect?

CVE-2026-42190 affects redwoodsdk. Severity is medium (CVSS 5.3). 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

How urgent is CVE-2026-42190?

Priority 19/100. No elevated risk signals yet.

Software pages

React vulnerabilities

References

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