CVE-2025-11953

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2026-02-05), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, nvd
Trending — 3 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 62%CVSS: 9.8Exploit: cisa kev · ssvc active · epss top5pct · epss high · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The Metro Development Server, which is opened by the React Native Community CLI, binds to external interfaces by default. The server exposes an endpoint that is vulnerable to OS command injection. This allows unauthenticated network attackers to send a POST request to the server and run arbitrary executables. On Windows, the attackers can also execute arbitrary shell commands with fully controlled arguments.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS PROB
62%
EPSS %ILE
99%
KEV
⚠ Exploited

Published

November 3, 2025

Last Modified

February 6, 2026

Advisory Details (6)

Auto-updated Jul 27, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: github_commit, cisa.
generic🔴 Active Exploitation

Metro4Shell: Exploitation of React Native’s Metro Server in the Wild | Blog | VulnCheck

https://www.vulncheck.com/blog/metro4shell_eitw
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-11953
generic

Michał Pierzchała on X: "@sebastienlorber @SzymonRybczak This CVE is overblown and targets way more CLI versions than necessary. Others are fixed in point releases a @SzymonRybczak mentioned. Authors of the CVE haven't contacted us about it prior posting it. Not cool." / X

https://x.com/thymikee/status/1986770875954475375
generic

Szymon Rybczak on X: "As maintainer of React Native CLI I learned about this vulnerability today, and actually the issue only existed in two versions of CLI (v19, v18), so React Native v0.80 and v0.81. ‼️ Starting from CLI v9 (~3 years ago), so from React Native v0.70 URL validation was included to prevent using different protocol than http/https, so users between v0.70 and v0.80 (majority of CLI users) are not affected. [0] The check was removed during a refactor which we didn't spot when...

Szymon Rybczak on X: "As maintainer of React Native CLI I learned about this vulnerability today, and actually the issue only existed in two versions of CLI (v19, v18), so React Native v0.80 and v0.81. ‼️ Starting from CLI v9 (~3 years ago), so from React Native v0.70 URL validation was included to prevent using different protocol than http/https, so users between v0.70 and v0.80 (majority of CLI users) are not affected. [0] The check was removed during a refactor which we didn't spot when reviewing the PR. We released v20.0.2 in September with the fix for the vulnerability. I've just cherry-picked and released 2 patch versions for other affected ➡️v19.1.2 for RN v0.81 ➡️v18.0.1 for RN v0.80 Please use relevant CLI version for each React Native major version. Updating to latest 20.x version is not supported when your project is using older React Native, it might work but wasn't tested and is not recommended. Learn more here: [1]. [0] → https://t.co/H5sH6CxYkj [1] → https://t.co/M2BmbItkY8" / X

https://x.com/SzymonRybczak/status/1986199665000566848
generic

CVE-2025-11953 Critical RCE in React Native CLI

https://jfrog.com/blog/cve-2025-11953-critical-react-native-community-cli-vulnerability
github_commit Patch Available

commit 15089907d1f1 (react-native-community/cli)

Patch available: react-native-community/cli v20.0.0 (contains commit 15089907d1f1)

https://github.com/react-native-community/cli/commit/15089907d1f1301b22c72d7f68846a2ef20df547

Affected Packages

(2 across 1 ecosystem)
npm(2)
PackageVulnerable rangeFixed inDependents
@react-native-community/cli—18.0.1—
@react-native-community/cli-server-api—18.0.1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 14× in last 7d / 49× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 105 total refreshes for this CVE.

  1. 2026-07-28 19:07 UTCEG score recompute
  2. 2026-07-28 15:35 UTCEPSS rescore
  3. 2026-07-27 19:24 UTCCISA KEV update
  4. 2026-07-27 17:17 UTCCISA KEV update
  5. 2026-07-26 17:50 UTCEG score recompute
  6. 2026-07-26 14:53 UTCEPSS rescore
  7. 2026-07-26 13:48 UTCEG score recompute
  8. 2026-07-26 01:41 UTCEG score recompute
  9. 2026-07-25 14:17 UTCEPSS rescore
  10. 2026-07-24 14:16 UTCEPSS rescore
  11. 2026-07-23 14:17 UTCEPSS rescore
  12. 2026-07-23 02:48 UTCEG score recompute
  13. 2026-07-22 23:46 UTCEG score recompute
  14. 2026-07-22 19:40 UTCCISA KEV update
  15. 2026-07-22 15:41 UTCEG score recompute
  16. 2026-07-22 14:07 UTCEPSS rescore
  17. 2026-07-22 14:07 UTCEPSS rescore
  18. 2026-07-21 19:24 UTCEG score recompute
  19. 2026-07-21 15:24 UTCEPSS rescore
  20. 2026-07-21 14:37 UTCCISA KEV update
  21. 2026-07-20 19:11 UTCEG score recompute
  22. 2026-07-18 10:42 UTCEG score recompute
  23. 2026-07-18 10:03 UTCEPSS rescore
  24. 2026-07-17 10:30 UTCEG score recompute
  25. 2026-07-16 17:04 UTCCISA KEV update
Show 75 more
  1. 2026-07-16 17:02 UTCEPSS rescore
  2. 2026-07-16 17:02 UTCEPSS rescore
  3. 2026-07-15 16:57 UTCEPSS rescore
  4. 2026-07-15 16:57 UTCEPSS rescore
  5. 2026-07-15 16:49 UTCCISA KEV update
  6. 2026-07-15 15:04 UTCCISA KEV update
  7. 2026-07-14 18:05 UTCCISA KEV update
  8. 2026-07-13 22:29 UTCEPSS rescore
  9. 2026-07-13 22:29 UTCEPSS rescore
  10. 2026-07-13 17:07 UTCCISA KEV update
  11. 2026-07-13 06:12 UTCEPSS rescore
  12. 2026-07-12 05:46 UTCEPSS rescore
  13. 2026-07-12 05:45 UTCEPSS rescore
  14. 2026-07-11 08:26 UTCEPSS rescore
  15. 2026-07-11 08:26 UTCEPSS rescore
  16. 2026-07-10 17:52 UTCCISA KEV update
  17. 2026-07-09 19:09 UTCEPSS rescore
  18. 2026-07-08 15:14 UTCEPSS rescore
  19. 2026-07-07 19:01 UTCCISA KEV update
  20. 2026-07-07 17:16 UTCCISA KEV update
  21. 2026-07-05 02:30 UTCEPSS rescore
  22. 2026-07-01 19:16 UTCCISA KEV update
  23. 2026-07-01 15:06 UTCEPSS rescore
  24. 2026-06-29 19:12 UTCCISA KEV update
  25. 2026-06-28 04:55 UTCEPSS rescore
  26. 2026-06-27 03:08 UTCEPSS rescore
  27. 2026-06-27 03:08 UTCEPSS rescore
  28. 2026-06-25 19:15 UTCCISA KEV update
  29. 2026-06-25 13:49 UTCEPSS rescore
  30. 2026-06-25 13:49 UTCEPSS rescore
  31. 2026-06-23 21:32 UTCEPSS rescore
  32. 2026-06-23 17:44 UTCCISA KEV update
  33. 2026-06-21 01:59 UTCEPSS rescore
  34. 2026-06-21 01:59 UTCEPSS rescore
  35. 2026-06-18 17:52 UTCEPSS rescore
  36. 2026-06-18 17:52 UTCEPSS rescore
  37. 2026-06-18 16:13 UTCCISA KEV update
  38. 2026-06-17 17:52 UTCEPSS rescore
  39. 2026-06-16 19:33 UTCCISA KEV update
  40. 2026-06-16 17:52 UTCEPSS rescore
  41. 2026-06-15 19:33 UTCCISA KEV update
  42. 2026-06-15 17:48 UTCEPSS rescore
  43. 2026-06-13 22:59 UTCEPSS rescore
  44. 2026-06-13 22:59 UTCEPSS rescore
  45. 2026-06-12 23:11 UTCEPSS rescore
  46. 2026-06-12 17:35 UTCCISA KEV update
  47. 2026-06-11 19:10 UTCCISA KEV update
  48. 2026-06-11 13:59 UTCEPSS rescore
  49. 2026-06-10 22:18 UTCEPSS rescore
  50. 2026-06-10 13:21 UTCEPSS rescore
  51. 2026-06-09 18:42 UTCCISA KEV update
  52. 2026-06-09 17:12 UTCCISA KEV update
  53. 2026-06-08 19:16 UTCCISA KEV update
  54. 2026-06-08 17:26 UTCCISA KEV update
  55. 2026-06-08 14:16 UTCEPSS rescore
  56. 2026-06-08 14:16 UTCEPSS rescore
  57. 2026-06-07 15:24 UTCEPSS rescore
  58. 2026-06-06 13:47 UTCEPSS rescore
  59. 2026-06-06 13:46 UTCEPSS rescore
  60. 2026-06-05 22:46 UTCEPSS rescore
  61. 2026-06-05 22:46 UTCEPSS rescore
  62. 2026-06-05 22:43 UTCCISA KEV update
  63. 2026-06-05 06:10 UTCEPSS rescore
  64. 2026-06-05 06:09 UTCEPSS rescore
  65. 2026-06-04 13:11 UTCEPSS rescore
  66. 2026-06-04 13:11 UTCEPSS rescore
  67. 2026-06-03 19:09 UTCCISA KEV update
  68. 2026-06-02 20:12 UTCEPSS rescore
  69. 2026-06-02 20:12 UTCEPSS rescore
  70. 2026-06-02 18:32 UTCCISA KEV update
  71. 2026-06-01 20:42 UTCCISA KEV update
  72. 2026-06-01 13:51 UTCEPSS rescore
  73. 2026-06-01 13:51 UTCEPSS rescore
  74. 2026-05-31 22:30 UTCEPSS rescore
  75. 2026-05-31 22:30 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCSaidBenaissa/cve-2025-11953-vulnerability-demo
    First seen Nov 4, 2025

    CVE-2025-11953 demonstration: Critical RCE vulnerability in React Native CLI (CVSS 9.8). Educational security research with proof-of-concept exploits and mitigation strategies.

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2025-11953?
CVE-2025-11953 is a critical vulnerability published on November 3, 2025. The Metro Development Server, which is opened by the React Native Community CLI, binds to external interfaces by default. The server exposes an endpoint that is vulnerable to OS command injection. This allows unauthenticated network attackers to send a POST request to the server and run arbitrary…
When was CVE-2025-11953 disclosed?
CVE-2025-11953 was first published in the National Vulnerability Database on November 3, 2025, with the most recent update on February 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-11953 actively exploited?
Yes. CISA added CVE-2025-11953 to the Known Exploited Vulnerabilities catalog on February 5, 2026, affecting React Native Community CLI. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2025-11953?
CVE-2025-11953 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2025-11953?
CVE-2025-11953 affects React Native Community CLI. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2025-11953?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-11953, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-11953

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