7.5

CVE-2025-67779: facebook react Deserialization of Untrusted Data

CVSS: 7.5v3.1HighModified
AliasesGHSA-7gmr-mq3h-m5h9
Published 11-12-2025Last modified 12-12-2025
Open JSON

Vulnerability summary

CVE-2025-67779 is a high (CVSS 7.5) Deserialization of Untrusted Data vulnerability in facebook react. EPSS estimates a 19.99% chance of exploitation in the next 30 days, higher than 97.4% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
19.99%
0%100%
Medium · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-12-2025
    PublishedVulnerability first disclosed.
  2. 12-12-2025
    Last modifiedVulnerability information updated.

Description

It was found that the fix addressing CVE-2025-55184 in React Server Components was incomplete and does not prevent a denial of service attack in a specific case. React Server Components versions 19.0.2, 19.1.3 and 19.2.2 are affected, allowing unsafe deserialization of payloads from HTTP requests to Server Function endpoints. This can cause an infinite loop that hangs the server process and may prevent future HTTP requests from being served.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

19.99%

Chance of exploitation in the next 30 days

Percentile

97%

Versus all other CVEs

30-day change

0.00 pp

From 19.99% on 19-09-2026

19-09-202619-10-2026
EPSS score
19.99%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Meta3 products
Npm3 products
  • react-server-dom-parcel≥ 19.0.2, < 19.0.3 | ≥ 19.1.3, < 19.1.4 | ≥ 19.2.2, < 19.2.3
  • react-server-dom-turbopack≥ 19.0.2, < 19.0.3 | ≥ 19.1.3, < 19.1.4 | ≥ 19.2.2, < 19.2.3
  • react-server-dom-webpack≥ 19.0.2, < 19.0.3 | ≥ 19.1.3, < 19.1.4 | ≥ 19.2.2, < 19.2.3
Facebook1 product
  • react19.0.2 | 19.1.3 | 19.2.2
Vercel1 product
  • next.js≥ 13.3.0, < 14.2.35 | ≥ 15.0.0, < 15.0.7 | ≥ 15.1.0, < 15.1.11 | ≥ 15.2.0, < 15.2.8 | ≥ 15.3.0, < 15.3.8 | ≥ 15.4.0, < 15.4.10 | ≥ 15.5.0, < 15.5.9 | ≥ 16.0.0, < 16.0.10 | 15.6.0 | 15.6.0:canary0 | 15.6.0:canary1 | 15.6.0:canary10 | 15.6.0:canary11 | 15.6.0:canary12 | 15.6.0:canary13 | 15.6.0:canary14 | 15.6.0:canary15 | 15.6.0:canary16 | 15.6.0:canary17 | 15.6.0:canary18 | 15.6.0:canary19 | 15.6.0:canary2 | 15.6.0:canary20 | 15.6.0:canary21 | 15.6.0:canary22 | 15.6.0:canary23 | 15.6.0:canary24 | 15.6.0:canary25 | 15.6.0:canary26 | 15.6.0:canary27 | 15.6.0:canary28 | 15.6.0:canary29 | 15.6.0:canary3 | 15.6.0:canary30 | 15.6.0:canary31 | 15.6.0:canary32 | 15.6.0:canary33 | 15.6.0:canary34 | 15.6.0:canary35 | 15.6.0:canary36 | 15.6.0:canary37 | 15.6.0:canary38 | 15.6.0:canary39 | 15.6.0:canary4 | 15.6.0:canary40 | 15.6.0:canary41 | 15.6.0:canary42 | 15.6.0:canary43 | 15.6.0:canary44 | 15.6.0:canary45 | 15.6.0:canary46 | 15.6.0:canary47 | 15.6.0:canary48 | 15.6.0:canary49 | 15.6.0:canary5 | 15.6.0:canary50 | 15.6.0:canary51 | 15.6.0:canary52 | 15.6.0:canary53 | 15.6.0:canary54 | 15.6.0:canary55 | 15.6.0:canary56 | 15.6.0:canary57 | 15.6.0:canary58 | 15.6.0:canary59 | 15.6.0:canary6 | 15.6.0:canary7 | 15.6.0:canary8 | 15.6.0:canary9 | 16.1.0 | 16.1.0:canary0 | 16.1.0:canary1 | 16.1.0:canary10 | 16.1.0:canary11 | 16.1.0:canary12 | 16.1.0:canary13 | 16.1.0:canary14 | 16.1.0:canary15 | 16.1.0:canary16 | 16.1.0:canary17 | 16.1.0:canary18 | 16.1.0:canary2 | 16.1.0:canary3 | 16.1.0:canary4 | 16.1.0:canary5 | 16.1.0:canary6 | 16.1.0:canary7 | 16.1.0:canary8 | 16.1.0:canary9

4 vendors · 8 products

References

6 links