CVE-2025-59472
published 2026-01-26CVE-2025-59472: A denial of service vulnerability exists in Next.js versions with Partial Prerendering (PPR) enabled when running in minimal mode. The PPR resume endpoint…
PriorityP343high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.36%
28.2th percentile
A denial of service vulnerability exists in Next.js versions with Partial Prerendering (PPR) enabled when running in minimal mode. The PPR resume endpoint accepts unauthenticated POST requests with the `Next-Resume: 1` header and processes attacker-controlled postponed state data. Two closely related vulnerabilities allow an attacker to crash the server process through memory exhaustion:
1. **Unbounded request body buffering**: The server buffers the entire POST request body into memory using `Buffer.concat()` without enforcing any size limit, allowing arbitrarily large payloads to exhaust available memory.
2. **Unbounded decompression (zipbomb)**: The resume data cache is decompressed using `inflateSync()` without limiting the decompressed output size. A small compressed payload can expand to hundreds of megabytes or gigabytes, causing memory exhaustion.
Both attack vectors result in a fatal V8 out-of-memory error (`FATAL ERROR: Reached heap limit Allocation failed - JavaScript heap out of memory`) causing the Node.js process to terminate. The zipbomb variant is particularly dangerous as it can bypass reverse proxy request size limits while still causing large memory allocation on the server.
To be affected you must have an application running with `experimental.ppr: true` or `cacheComponents: true` configured along with the NEXT_PRIVATE_MINIMAL_MODE=1 environment variable.
Strongly consider upgrading to 15.6.0-canary.61 or 16.1.5 to reduce risk and prevent availability issues in Next applications.
Affected
79 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| next | next | 15.0.0-canary.0 – 15.0.0-canary.205 | — |
| next | next | 15.0.1-canary.0 – 15.0.1-canary.3 | — |
| next | next | 15.0.2-canary.0 – 15.0.2-canary.11 | — |
| next | next | 15.0.3-canary.0 – 15.0.3-canary.9 | — |
| next | next | 15.0.4-canary.0 – 15.0.4-canary.52 | — |
| next | next | 15.1.1-canary.0 – 15.1.1-canary.27 | — |
| next | next | 15.2.0-canary.0 – 15.2.0-canary.77 | — |
| next | next | 15.2.1-canary.0 – 15.2.1-canary.6 | — |
| next | next | 15.2.2-canary.0 – 15.2.2-canary.7 | — |
| next | next | 15.3.0-canary.0 – 15.3.0-canary.46 | — |
| next | next | 15.3.1-canary.0 – 15.3.1-canary.15 | — |
| next | next | 15.4.0-canary.0 – 15.4.0-canary.130 | — |
| next | next | 15.4.2-canary.0 – 15.4.2-canary.56 | — |
| next | next | 15.5.1-canary.0 – 15.5.1-canary.39 | — |
| next | next | >= 15.6.0-canary.0 < 15.6.0-canary.61 | 15.6.0-canary.61 |
| next | next | >= 16.0.0-beta.0 < 16.1.5 | 16.1.5 |
| vercel | next | >= 15.0.0-canary.0 < 15.0.0 | 15.0.0 |
| vercel | next | >= 15.0.1-canary.0 < 15.0.1 | 15.0.1 |
| vercel | next | >= 15.0.2-canary.0 < 15.0.2 | 15.0.2 |
| vercel | next | >= 15.0.3-canary.0 < 15.0.3 | 15.0.3 |
| vercel | next | >= 15.0.4-canary.0 < 15.0.4 | 15.0.4 |
| vercel | next | >= 15.0.5-canary.0 < 15.0.5 | 15.0.5 |
| vercel | next | >= 15.0.6-canary.0 < 15.0.6 | 15.0.6 |
| vercel | next | >= 15.0.7-canary.0 < 15.0.7 | 15.0.7 |
| vercel | next | >= 15.1.0-canary.0 < 15.1.0 | 15.1.0 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_redhat5.9MEDIUM
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GHSA
Next.js has Unbounded Memory Consumption via PPR Resume Endpoint
ghsa·2026-01-28
CVE-2025-59472 [MEDIUM] CWE-400 Next.js has Unbounded Memory Consumption via PPR Resume Endpoint
Next.js has Unbounded Memory Consumption via PPR Resume Endpoint
A denial of service vulnerability exists in Next.js versions with Partial Prerendering (PPR) enabled when running in minimal mode. The PPR resume endpoint accepts unauthenticated POST requests with the `Next-Resume: 1` header and processes attacker-controlled postponed state data. Two closely related vulnerabilities allow an attacker to crash the server process through memory exhaustion:
1. **Unbounded request body buffering**: The server buffers the entire POST request body into memory using `Buffer.concat()` without enforcing any size limit, allowing arbitrarily large payloads to exhaust available memory.
2. **Unbounded decompression (zipbomb)**: The resume data cache is decompressed using `inflateSync()` without limitin
OSV
Next.js has Unbounded Memory Consumption via PPR Resume Endpoint
osv·2026-01-28
CVE-2025-59472 [MEDIUM] Next.js has Unbounded Memory Consumption via PPR Resume Endpoint
Next.js has Unbounded Memory Consumption via PPR Resume Endpoint
A denial of service vulnerability exists in Next.js versions with Partial Prerendering (PPR) enabled when running in minimal mode. The PPR resume endpoint accepts unauthenticated POST requests with the `Next-Resume: 1` header and processes attacker-controlled postponed state data. Two closely related vulnerabilities allow an attacker to crash the server process through memory exhaustion:
1. **Unbounded request body buffering**: The server buffers the entire POST request body into memory using `Buffer.concat()` without enforcing any size limit, allowing arbitrarily large payloads to exhaust available memory.
2. **Unbounded decompression (zipbomb)**: The resume data cache is decompressed using `inflateSync()` without limitin
Red Hat
next: NextJS Denial of Service in Partial Pre Rendering
vendor_redhat·2026-01-26·CVSS 5.9
CVE-2025-59472 [MEDIUM] CWE-770 next: NextJS Denial of Service in Partial Pre Rendering
next: NextJS Denial of Service in Partial Pre Rendering
A denial of service vulnerability exists in Next.js versions with Partial Prerendering (PPR) enabled when running in minimal mode. The PPR resume endpoint accepts unauthenticated POST requests with the `Next-Resume: 1` header and processes attacker-controlled postponed state data. Two closely related vulnerabilities allow an attacker to crash the server process through memory exhaustion:
1. **Unbounded request body buffering**: The server buffers the entire POST request body into memory using `Buffer.concat()` without enforcing any size limit, allowing arbitrarily large payloads to exhaust available memory.
2. **Unbounded decompression (zipbomb)**: The resume data cache is decompressed using `inflateSync()` without limiting the decom
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2025-59472 thunderbird: NextJS Denial of Service in Partial Pre Rendering [fedora-42]
bugzilla·2026-01-28·CVSS 7.5
CVE-2025-59472 [HIGH] CVE-2025-59472 thunderbird: NextJS Denial of Service in Partial Pre Rendering [fedora-42]
CVE-2025-59472 thunderbird: NextJS Denial of Service in Partial Pre Rendering [fedora-42]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '42'.
Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, change
Bugzilla
CVE-2025-59472 icecat: NextJS Denial of Service in Partial Pre Rendering [fedora-42]
bugzilla·2026-01-28·CVSS 7.5
CVE-2025-59472 [HIGH] CVE-2025-59472 icecat: NextJS Denial of Service in Partial Pre Rendering [fedora-42]
CVE-2025-59472 icecat: NextJS Denial of Service in Partial Pre Rendering [fedora-42]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '42'.
Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, change the '
Bugzilla
CVE-2025-59472 firefox: NextJS Denial of Service in Partial Pre Rendering [fedora-42]
bugzilla·2026-01-28·CVSS 7.5
CVE-2025-59472 [HIGH] CVE-2025-59472 firefox: NextJS Denial of Service in Partial Pre Rendering [fedora-42]
CVE-2025-59472 firefox: NextJS Denial of Service in Partial Pre Rendering [fedora-42]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from releases that are no longer
maintained. At that time this bug will be closed as EOL if it remains open with a
'version' of '42'.
Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, change the
Wiz
CVE-2025-59472 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 5.9
CVE-2025-59472 [MEDIUM] CVE-2025-59472 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2025-59472 :
ASP.NET Core vulnerability analysis and mitigation
Next-Resume: 1
Buffer.concat()
inflateSync()
FATAL ERROR: Reached heap limit Allocation failed - JavaScript heap out of memory
experimental.ppr: true
cacheComponents: true
Strongly consider upgrading to 15.6.0-canary.61 or 16.1.5 to reduce risk and prevent availability issues in Next applications.
Source : NVD
## 7.5
Score
Published January 26, 2026
Severity HIGH
CNA Score 5.9
Affected Technologies
ASP.NET Core
Wolfi
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 25.3
Exploitation Probability (EPSS) 0.1
Affected packages and libraries
dotnet7.0
dotnet-sdk-7.0
Sources
NVD
Chainguard Has Fix Added at: F
2026-01-26
Published