CVE-2025-55183

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 26.3%, top 4% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Weaponized
5.3
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 62%
CISA-KEV: Not listedEPSS: 62%CVSS: 5.3Exploit: NoneExposed: 0

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

An information leak vulnerability exists in specific configurations of React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1, including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. A specifically crafted HTTP request sent to a vulnerable Server Function may unsafely return the source code of any Server Function. Exploitation requires the existence of a Server Function which explicitly or implicitly exposes a stringified argument.

CVSS v3
5.3
EG Score
5.3(medium)
EPSS
99.1%
KEV
Not listed

Published

December 11, 2025

Last Modified

December 12, 2025

References (2)

Affected Packages

(3 across 1 ecosystem)
npm(3)
PackageVulnerable rangeFixed inDependents
react-server-dom-parcel—19.2.2—
react-server-dom-turbopack—19.2.2—
react-server-dom-webpack—19.2.2—

Data Freshness Timeline

(refreshed 8× in last 7d / 29× 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.

  1. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-22 14:07 UTCEPSS rescore
  3. 2026-07-21 15:24 UTCEPSS rescore
  4. 2026-07-20 17:08 UTCEPSS rescore
  5. 2026-07-19 14:30 UTCEPSS rescore
  6. 2026-07-19 14:30 UTCEPSS rescore
  7. 2026-07-18 10:04 UTCEPSS rescore
  8. 2026-07-16 17:02 UTCEPSS rescore
  9. 2026-07-15 16:57 UTCEPSS rescore
  10. 2026-07-15 16:57 UTCEPSS rescore
  11. 2026-07-13 22:29 UTCEPSS rescore
  12. 2026-07-13 06:12 UTCEPSS rescore
  13. 2026-07-13 06:12 UTCEPSS rescore
  14. 2026-07-12 05:46 UTCEPSS rescore
  15. 2026-07-11 08:27 UTCEPSS rescore
  16. 2026-07-11 08:27 UTCEPSS rescore
  17. 2026-07-09 19:09 UTCEPSS rescore
  18. 2026-07-06 16:27 UTCEPSS rescore
  19. 2026-07-06 16:27 UTCEPSS rescore
  20. 2026-07-06 07:41 UTCOSV refresh
  21. 2026-07-05 02:30 UTCEPSS rescore
  22. 2026-07-04 06:30 UTCEPSS rescore
  23. 2026-07-02 17:01 UTCEPSS rescore
  24. 2026-07-01 15:06 UTCEPSS rescore
  25. 2026-06-30 23:22 UTCEPSS rescore
Show 43 more
  1. 2026-06-27 03:08 UTCEPSS rescore
  2. 2026-06-27 03:08 UTCEPSS rescore
  3. 2026-06-25 13:49 UTCEPSS rescore
  4. 2026-06-23 21:32 UTCEPSS rescore
  5. 2026-06-21 14:56 UTCEPSS rescore
  6. 2026-06-21 14:56 UTCEPSS rescore
  7. 2026-06-21 01:59 UTCEPSS rescore
  8. 2026-06-21 01:59 UTCEPSS rescore
  9. 2026-06-19 19:25 UTCEPSS rescore
  10. 2026-06-19 19:25 UTCEPSS rescore
  11. 2026-06-18 17:52 UTCEPSS rescore
  12. 2026-06-18 17:52 UTCEPSS rescore
  13. 2026-06-17 19:35 UTCOSV refresh
  14. 2026-06-17 17:52 UTCEPSS rescore
  15. 2026-06-16 17:52 UTCEPSS rescore
  16. 2026-06-16 17:52 UTCEPSS rescore
  17. 2026-06-15 17:48 UTCEPSS rescore
  18. 2026-06-14 23:17 UTCEPSS rescore
  19. 2026-06-12 23:11 UTCEPSS rescore
  20. 2026-06-11 14:00 UTCEPSS rescore
  21. 2026-06-11 14:00 UTCEPSS rescore
  22. 2026-06-10 22:18 UTCEPSS rescore
  23. 2026-06-10 22:18 UTCEPSS rescore
  24. 2026-06-10 13:22 UTCEPSS rescore
  25. 2026-06-10 13:22 UTCEPSS rescore
  26. 2026-06-07 15:24 UTCEPSS rescore
  27. 2026-06-07 15:24 UTCEPSS rescore
  28. 2026-06-06 13:47 UTCEPSS rescore
  29. 2026-06-06 13:47 UTCEPSS rescore
  30. 2026-06-05 22:46 UTCEPSS rescore
  31. 2026-06-05 22:46 UTCEPSS rescore
  32. 2026-06-04 13:12 UTCEPSS rescore
  33. 2026-06-04 13:12 UTCEPSS rescore
  34. 2026-06-02 20:12 UTCEPSS rescore
  35. 2026-06-02 20:12 UTCEPSS rescore
  36. 2026-06-01 13:51 UTCEPSS rescore
  37. 2026-06-01 13:51 UTCEPSS rescore
  38. 2026-05-31 22:30 UTCEPSS rescore
  39. 2026-05-31 22:30 UTCEPSS rescore
  40. 2026-05-31 00:16 UTCEPSS rescore
  41. 2026-05-31 00:16 UTCEPSS rescore
  42. 2026-05-29 17:43 UTCEG score recompute
  43. 2026-05-29 13:44 UTCEPSS rescore

Publicly available exploits

(5 references)

Working exploit code is in the public domain (5 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCwilliavs/nextjs-security-update
    First seen Dec 12, 2025

    Batch upgrade all your Next.js apps to patched versions - fight back against CVE-2025-55183/55184/67779

    Open source ↗
  • GitHub PoCkimtruth/CVE-2025-55183-poc
    First seen Dec 12, 2025

    PoC for CVE-2025-55183

    Open source ↗
  • GitHub PoCStealthMoud/react-server-cve-lab
    First seen Dec 12, 2025

    Security research lab for CVE-2025-55183 and CVE-2025-55184 in React Server Components

    Open source ↗
  • GitHub PoCX-Cotang/CVE-2025-55183_POC
    First seen Dec 12, 2025

    CVE-2025-55183 POC

    Open source ↗
  • GitHub PoCSaturate/CVE-2025-55183
    First seen Dec 11, 2025

    A CVE-2025-55183 secret miner

    Open source ↗

Frequently asked(5)

What is CVE-2025-55183?
CVE-2025-55183 is a medium vulnerability published on December 11, 2025. An information leak vulnerability exists in specific configurations of React Server Components versions 19.0.0, 19.0.1 19.1.0, 19.1.1, 19.1.2, 19.2.0 and 19.2.1, including the following packages: react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. A specifically…
When was CVE-2025-55183 disclosed?
CVE-2025-55183 was first published in the National Vulnerability Database on December 11, 2025, with the most recent update on December 12, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-55183 actively exploited?
CVE-2025-55183 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2025-55183?
CVE-2025-55183 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2025-55183?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-55183, 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

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