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Vulnerability details: VCID-hwnh-8gqs-8fgj
Vulnerability ID VCID-hwnh-8gqs-8fgj
Aliases CVE-2026-22030
GHSA-h5cw-625j-3rxh
Summary React Router has CSRF issue in Action/Server Action Request Processing React Router (or Remix v2) is vulnerable to CSRF attacks on document POST requests to UI routes when using server-side route `action` handlers in [Framework Mode](https://reactrouter.com/start/modes#framework), or when using React Server Actions in the new unstable RSC modes. > [!NOTE] > This does not impact applications that use [Declarative Mode](https://reactrouter.com/start/modes#declarative) (`<BrowserRouter>`) or [Data Mode](https://reactrouter.com/start/modes#data) (`createBrowserRouter`/`<RouterProvider>`).
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-346 Origin Validation Error
CWE-352 Cross-Site Request Forgery (CSRF)
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 6.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-22030.json
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-22030
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-22030
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-22030
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-22030
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-22030
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-22030
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-22030
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-22030
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-22030
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-22030
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-22030
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-22030
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-22030
epss 0.00021 https://api.first.org/data/v1/epss?cve=CVE-2026-22030
cvssv3.1 6.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-h5cw-625j-3rxh
cvssv3.1 6.5 https://github.com/remix-run/react-router
generic_textual MODERATE https://github.com/remix-run/react-router
cvssv3.1 6.5 https://github.com/remix-run/react-router/security/advisories/GHSA-h5cw-625j-3rxh
cvssv3.1_qr MODERATE https://github.com/remix-run/react-router/security/advisories/GHSA-h5cw-625j-3rxh
generic_textual MODERATE https://github.com/remix-run/react-router/security/advisories/GHSA-h5cw-625j-3rxh
ssvc Track https://github.com/remix-run/react-router/security/advisories/GHSA-h5cw-625j-3rxh
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2026-22030
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2026-22030
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-22030.json
https://api.first.org/data/v1/epss?cve=CVE-2026-22030
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/remix-run/react-router
https://github.com/remix-run/react-router/security/advisories/GHSA-h5cw-625j-3rxh
https://nvd.nist.gov/vuln/detail/CVE-2026-22030
2428414 https://bugzilla.redhat.com/show_bug.cgi?id=2428414
GHSA-h5cw-625j-3rxh https://github.com/advisories/GHSA-h5cw-625j-3rxh
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-22030.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://github.com/remix-run/react-router
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://github.com/remix-run/react-router/security/advisories/GHSA-h5cw-625j-3rxh
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-01-12T18:09:33Z/ Found at https://github.com/remix-run/react-router/security/advisories/GHSA-h5cw-625j-3rxh
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2026-22030
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.05514
EPSS Score 0.00021
Published At April 2, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:52:19.285056+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/01/GHSA-h5cw-625j-3rxh/GHSA-h5cw-625j-3rxh.json 38.0.0