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CVE-2026-48932

A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding...

3.7 LowFix available

A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding proxies that rebuild outbound headers from the visible IncomingMessage headers while piping the original body to a reused backend connection.

Node.js can omit headers beyond maxHeadersCount / maxHeaderPairs from req.headers, req.rawHeaders, and req.headersDistinct, while still using those omitted headers internally for HTTP message framing. In particular, Content-Length can be hidden from userland while the request body is still delivered.

This vulnerability affects all supported release lines: Node.js 22, Node.js 24, and Node.js 26.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
Low
Availability
None

Exploit likelihood

0.27%Up 0.1 points since Sep 1, 2026
90%50%10%1%

What each source reports

CVE List Score used 3.7

A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding proxies that rebuild outbound headers from the visible IncomingMessage headers while piping the original body to a reused backend connection.

Node.js can omit headers beyond maxHeadersCount / maxHeaderPairs from req.headers, req.rawHeaders, and req.headersDistinct, while still using those omitted headers internally for HTTP message framing. In particular, Content-Length can be hidden from userland while the request body is still delivered.

This vulnerability affects all supported release lines: Node.js 22, Node.js 24, and Node.js 26.

Record
CVE-2026-48932
CVSS 3.0
3.7 LowCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-444
Updated
2026-11-02
EUVDEUVD-2026-68923 3.7

A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding proxies that rebuild outbound headers from the visible IncomingMessage headers while piping the original body to a reused backend connection.

Node.js can omit headers beyond maxHeadersCount / maxHeaderPairs from req.headers, req.rawHeaders, and req.headersDistinct, while still using those omitted headers internally for HTTP message framing. In particular, Content-Length can be hidden from userland while the request body is still delivered.

This vulnerability affects all supported release lines: Node.js 22, Node.js 24, and Node.js 26.

Record
EUVD-2026-68923
CVSS 3.0
3.7 LowCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-44cw-v76j-7fvv 3.7

A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding...

A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding proxies that rebuild outbound headers from the visible IncomingMessage headers while piping the original body to a reused backend connection.

Node.js can omit headers beyond maxHeadersCount / maxHeaderPairs from req.headers, req.rawHeaders, and req.headersDistinct, while still using those omitted headers internally for HTTP message framing. In particular, Content-Length can be hidden from userland while the request body is still delivered.

This vulnerability affects all supported release lines: Node.js 22, Node.js 24, and Node.js 26.

Record
GHSA-44cw-v76j-7fvv
CVSS 3.0
3.7 LowCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-444
Updated
2026-11-02
NVD 3.7

A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding proxies that rebuild outbound headers from the visible IncomingMessage headers while piping the original body to a reused backend connection.

Node.js can omit headers beyond maxHeadersCount / maxHeaderPairs from req.headers, req.rawHeaders, and req.headersDistinct, while still using those omitted headers internally for HTTP message framing. In particular, Content-Length can be hidden from userland while the request body is still delivered.

This vulnerability affects all supported release lines: Node.js 22, Node.js 24, and Node.js 26.

Record
CVE-2026-48932
CVSS 3.0
3.7 LowCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-444
Updated
2026-11-02
OSVDEBIAN-CVE-2026-48932 3.7

A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding proxies that rebuild outbound headers from the visible IncomingMessage headers while piping the original body to a reused backend connection. Node.js can omit headers beyond maxHeadersCount / maxHeaderPairs from req.headers, req.rawHeaders, and req.headersDistinct, while still using those omitted headers internally for HTTP message framing. In particular, Content-Length can be hidden from userland while the request body is still delivered. This vulnerability affects all supported release lines: Node.js 22, Node.js 24, and Node.js 26.

Record
DEBIAN-CVE-2026-48932
CVSS 3.0
3.7 LowCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Updated
2026-11-02
OSVRHSA-2026:54389 7.5

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Record
RHSA-2026:54389
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 5 moreShow less
OSVRHSA-2026:54436 7.5

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Record
RHSA-2026:54436
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVRHSA-2026:54438 7.4

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Record
RHSA-2026:54438
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2026-48932 3.7

A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding proxies that rebuild outbound headers from the visible IncomingMessage headers while piping the original body to a reused backend connection. Node.js can omit headers beyond maxHeadersCount / maxHeaderPairs from req.headers, req.rawHeaders, and req.headersDistinct, while still using those omitted headers internally for HTTP message framing. In particular, Content-Length can be hidden from userland while the request body is still delivered. This vulnerability affects all supported release lines: Node.js 22, Node.js 24, and Node.js 26.

Record
UBUNTU-CVE-2026-48932
CVSS 3.0
3.7 LowCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Updated
2026-11-02
OSVBIT-node-2026-48932 No score

A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding proxies that rebuild outbound headers from the visible IncomingMessage headers while piping the original body to a reused backend connection.

Node.js can omit headers beyond maxHeadersCount / maxHeaderPairs from req.headers, req.rawHeaders, and req.headersDistinct, while still using those omitted headers internally for HTTP message framing. In particular, Content-Length can be hidden from userland while the request body is still delivered.

This vulnerability affects all supported release lines: Node.js 22, Node.js 24, and Node.js 26.

Record
BIT-node-2026-48932
Updated
2026-11-02
OSVBIT-node-min-2026-48932 No score

A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding proxies that rebuild outbound headers from the visible IncomingMessage headers while piping the original body to a reused backend connection.

Node.js can omit headers beyond maxHeadersCount / maxHeaderPairs from req.headers, req.rawHeaders, and req.headersDistinct, while still using those omitted headers internally for HTTP message framing. In particular, Content-Length can be hidden from userland while the request body is still delivered.

This vulnerability affects all supported release lines: Node.js 22, Node.js 24, and Node.js 26.

Record
BIT-node-min-2026-48932
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
node
Bitnami
before 22.23.0, 23.0.0 up to 24.17.0, 25.0.0 up to 26.3.1
22.23.024.17.026.3.1
node-min
Bitnami
before 22.23.0, 23.0.0 up to 24.17.0, 25.0.0 up to 26.3.1
22.23.024.17.026.3.1
nodejs
Debian:12
All versions, plus listed versions
18.13.0+dfsg1-118.13.0+dfsg1-1.118.19.0+dfsg-118.19.0+dfsg-218.19.0+dfsg-3
Show 45 moreShow less
18.19.0+dfsg-418.19.0+dfsg-518.19.0+dfsg-618.19.0+dfsg-6~deb12u118.19.0+dfsg-6~deb12u218.19.1+dfsg-118.19.1+dfsg-218.19.1+dfsg-318.19.1+dfsg-3.118.19.1+dfsg-418.19.1+dfsg-618.20.1+dfsg-118.20.1+dfsg-218.20.1+dfsg-318.20.1+dfsg-418.20.4+dfsg-1~deb12u118.20.4+dfsg-1~deb12u220.10.0+dfsg-120.12.2+dfsg-120.13.0+dfsg-120.13.1+dfsg-120.13.1+dfsg-220.14.0+dfsg-120.14.0+dfsg-220.14.0+dfsg-320.15.0+dfsg-120.15.1+dfsg-120.16.0+dfsg-120.17.0+dfsg-120.17.0+dfsg-220.18.0+dfsg-120.18.0+dfsg-220.18.1+dfsg-120.18.1+dfsg-220.18.2+dfsg-120.18.2+dfsg-220.18.2+dfsg-320.18.2+dfsg-420.18.3+dfsg-120.19.0+dfsg-120.19.0+dfsg-220.19.0+dfsg1-120.19.2+dfsg-120.19.4+dfsg-120.19.5+dfsg+~cs20.19.12-1
None known
nodejs
Debian:13
All versions, plus listed versions
20.19.2+dfsg-120.19.2+dfsg-1+deb13u120.19.2+dfsg-1+deb13u220.19.2+dfsg-1+deb13u320.19.4+dfsg-1
Show 42 moreShow less
20.19.5+dfsg+~cs20.19.12-120.19.5+dfsg+~cs20.19.12-220.19.5+dfsg+~cs20.19.12-320.19.5+dfsg+~cs20.19.12-420.19.5+dfsg+~cs20.19.24-122.12.0+dfsg-122.12.0+dfsg-222.12.0+dfsg-322.14.0+dfsg-122.18.0+dfsg+~cs22.17.2-122.18.0+dfsg+~cs22.17.2-222.18.0+dfsg-122.19.0+dfsg+~cs22.18.0-122.21.1+dfsg+~cs22.19.0-122.21.1+dfsg+~cs22.19.0-222.21.1+dfsg+~cs22.19.0-322.21.1+dfsg+~cs22.19.0-422.21.1+dfsg+~cs22.19.0-522.21.1+dfsg+~cs22.19.0-622.22.0+dfsg+~cs22.19.13-122.22.0+dfsg+~cs22.19.13-222.22.0+dfsg+~cs22.19.6-122.22.1+dfsg+~cs22.19.15-122.22.2+dfsg+~cs22.19.15-122.22.2+dfsg+~cs22.19.15-324.11.1+dfsg+~cs24.10.1-124.11.1+dfsg+~cs24.10.1-224.12.0+dfsg+~cs24.10.4-124.13.0+dfsg+~cs24.10.7-124.13.0+dfsg+~cs24.10.7-224.14.0+dfsg+~cs24.12.0-124.14.0+dfsg+~cs24.12.0-224.14.1+dfsg+~cs24.12.0-124.15.0+dfsg+~cs24.12.2-124.16.0+dfsg+~cs24.13.1-124.16.0+dfsg+~cs24.13.1-224.17.0+dfsg+~cs24.13.2-124.18.0+dfsg+~cs24.13.2-124.19.0+dfsg+~cs24.13.3-124.20.0+dfsg+~cs24.13.3-124.20.0+dfsg+~cs24.13.3-224.21.0+dfsg+~cs24.13.4-1
None known
nodejs
Debian:14
before 24.19.0+dfsg+~cs24.13.3-1, plus listed versions
20.19.2+dfsg-120.19.4+dfsg-120.19.5+dfsg+~cs20.19.12-120.19.5+dfsg+~cs20.19.12-220.19.5+dfsg+~cs20.19.12-3
Show 35 moreShow less
20.19.5+dfsg+~cs20.19.12-420.19.5+dfsg+~cs20.19.24-122.12.0+dfsg-122.12.0+dfsg-222.12.0+dfsg-322.14.0+dfsg-122.18.0+dfsg+~cs22.17.2-122.18.0+dfsg+~cs22.17.2-222.18.0+dfsg-122.19.0+dfsg+~cs22.18.0-122.21.1+dfsg+~cs22.19.0-122.21.1+dfsg+~cs22.19.0-222.21.1+dfsg+~cs22.19.0-322.21.1+dfsg+~cs22.19.0-422.21.1+dfsg+~cs22.19.0-522.21.1+dfsg+~cs22.19.0-622.22.0+dfsg+~cs22.19.13-122.22.0+dfsg+~cs22.19.13-222.22.0+dfsg+~cs22.19.6-122.22.1+dfsg+~cs22.19.15-122.22.2+dfsg+~cs22.19.15-122.22.2+dfsg+~cs22.19.15-324.11.1+dfsg+~cs24.10.1-124.11.1+dfsg+~cs24.10.1-224.12.0+dfsg+~cs24.10.4-124.13.0+dfsg+~cs24.10.7-124.13.0+dfsg+~cs24.10.7-224.14.0+dfsg+~cs24.12.0-124.14.0+dfsg+~cs24.12.0-224.14.1+dfsg+~cs24.12.0-124.15.0+dfsg+~cs24.12.2-124.16.0+dfsg+~cs24.13.1-124.16.0+dfsg+~cs24.13.1-224.17.0+dfsg+~cs24.13.2-124.18.0+dfsg+~cs24.13.2-1
24.19.0+dfsg+~cs24.13.3-1
nodejs26
Red Hat:hummingbird:1
From an advisory covering 10 CVEs
before 0:26.7.0-1.5.2.hum1
0:26.7.0-1.5.2.hum1
nodejs26-bin
Red Hat:hummingbird:1
From an advisory covering 10 CVEs
before 0:26.7.0-1.5.2.hum1
0:26.7.0-1.5.2.hum1
nodejs26-devel
Red Hat:hummingbird:1
From an advisory covering 10 CVEs
before 0:26.7.0-1.5.2.hum1
0:26.7.0-1.5.2.hum1
nodejs26-docs
Red Hat:hummingbird:1
From an advisory covering 10 CVEs
before 0:26.7.0-1.5.2.hum1
0:26.7.0-1.5.2.hum1
nodejs26-full-i18n
Red Hat:hummingbird:1
From an advisory covering 10 CVEs
before 0:26.7.0-1.5.2.hum1
0:26.7.0-1.5.2.hum1
Show 29 moreShow less
Affected packages
PackageAffectedFixed
nodejs26-libs
Red Hat:hummingbird:1
From an advisory covering 10 CVEs
before 0:26.7.0-1.5.2.hum1
0:26.7.0-1.5.2.hum1
nodejs26-npm
Red Hat:hummingbird:1
From an advisory covering 10 CVEs
before 0:11.19.0-1.26.7.0.1.5.2.hum1
0:11.19.0-1.26.7.0.1.5.2.hum1
nodejs26-npm-bin
Red Hat:hummingbird:1
From an advisory covering 10 CVEs
before 0:26.7.0-1.5.2.hum1
0:26.7.0-1.5.2.hum1
v8-14.6-devel
Red Hat:hummingbird:1
From an advisory covering 10 CVEs
before 0:14.6.202.34-1.26.7.0.1.5.2.hum1
0:14.6.202.34-1.26.7.0.1.5.2.hum1
nodejs22
Red Hat:hummingbird:1
From an advisory covering 2 CVEs
before 0:22.23.2-2.3.2.hum1
0:22.23.2-2.3.2.hum1
nodejs22-bin
Red Hat:hummingbird:1
From an advisory covering 2 CVEs
before 0:22.23.2-2.3.2.hum1
0:22.23.2-2.3.2.hum1
nodejs22-devel
Red Hat:hummingbird:1
From an advisory covering 2 CVEs
before 0:22.23.2-2.3.2.hum1
0:22.23.2-2.3.2.hum1
nodejs22-docs
Red Hat:hummingbird:1
From an advisory covering 2 CVEs
before 0:22.23.2-2.3.2.hum1
0:22.23.2-2.3.2.hum1
nodejs22-full-i18n
Red Hat:hummingbird:1
From an advisory covering 2 CVEs
before 0:22.23.2-2.3.2.hum1
0:22.23.2-2.3.2.hum1
nodejs22-libs
Red Hat:hummingbird:1
From an advisory covering 2 CVEs
before 0:22.23.2-2.3.2.hum1
0:22.23.2-2.3.2.hum1
nodejs22-npm
Red Hat:hummingbird:1
From an advisory covering 2 CVEs
before 0:10.9.8-1.22.23.2.2.3.2.hum1
0:10.9.8-1.22.23.2.2.3.2.hum1
nodejs22-npm-bin
Red Hat:hummingbird:1
From an advisory covering 2 CVEs
before 0:22.23.2-2.3.2.hum1
0:22.23.2-2.3.2.hum1
v8-12.4-devel
Red Hat:hummingbird:1
From an advisory covering 2 CVEs
before 0:12.4.254.21-1.22.23.2.2.3.2.hum1
0:12.4.254.21-1.22.23.2.2.3.2.hum1
nodejs24
Red Hat:hummingbird:1
From an advisory covering 9 CVEs
before 0:24.18.1-0.2.2.hum1
0:24.18.1-0.2.2.hum1
nodejs24-bin
Red Hat:hummingbird:1
From an advisory covering 9 CVEs
before 0:24.18.1-0.2.2.hum1
0:24.18.1-0.2.2.hum1
nodejs24-devel
Red Hat:hummingbird:1
From an advisory covering 9 CVEs
before 0:24.18.1-0.2.2.hum1
0:24.18.1-0.2.2.hum1
nodejs24-docs
Red Hat:hummingbird:1
From an advisory covering 9 CVEs
before 0:24.18.1-0.2.2.hum1
0:24.18.1-0.2.2.hum1
nodejs24-full-i18n
Red Hat:hummingbird:1
From an advisory covering 9 CVEs
before 0:24.18.1-0.2.2.hum1
0:24.18.1-0.2.2.hum1
nodejs24-libs
Red Hat:hummingbird:1
From an advisory covering 9 CVEs
before 0:24.18.1-0.2.2.hum1
0:24.18.1-0.2.2.hum1
nodejs24-npm
Red Hat:hummingbird:1
From an advisory covering 9 CVEs
before 0:11.16.0-1.24.18.1.0.2.2.hum1
0:11.16.0-1.24.18.1.0.2.2.hum1
nodejs24-npm-bin
Red Hat:hummingbird:1
From an advisory covering 9 CVEs
before 0:24.18.1-0.2.2.hum1
0:24.18.1-0.2.2.hum1
nodejs
Ubuntu:Pro:14.04:LTS
All versions, plus listed versions
0.10.15~dfsg1-40.10.21~dfsg1-10.10.22~dfsg1-20.10.23~dfsg1-10.10.23~dfsg1-2
Show 7 moreShow less
0.10.23~dfsg1-30.10.24~dfsg1-10.10.25~dfsg2-20.10.25~dfsg2-2ubuntu10.10.25~dfsg2-2ubuntu1.20.10.25~dfsg2-2ubuntu1.2+esm10.10.25~dfsg2-2ubuntu1.2+esm2
None known
nodejs
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
0.10.25~dfsg2-2ubuntu14.2.2~dfsg-14.2.3~dfsg-14.2.4~dfsg-1ubuntu14.2.4~dfsg-2
Show 7 moreShow less
4.2.6~dfsg-1ubuntu14.2.6~dfsg-1ubuntu44.2.6~dfsg-1ubuntu4.14.2.6~dfsg-1ubuntu4.24.2.6~dfsg-1ubuntu4.2+esm14.2.6~dfsg-1ubuntu4.2+esm24.2.6~dfsg-1ubuntu4.2+esm3
None known
nodejs
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
6.11.4~dfsg-1ubuntu16.11.4~dfsg-1ubuntu26.12.0~dfsg-1ubuntu16.12.0~dfsg-2ubuntu16.12.0~dfsg-2ubuntu2
Show 10 moreShow less
8.10.0~dfsg-28.10.0~dfsg-2ubuntu0.28.10.0~dfsg-2ubuntu0.38.10.0~dfsg-2ubuntu0.48.10.0~dfsg-2ubuntu0.4+esm18.10.0~dfsg-2ubuntu0.4+esm28.10.0~dfsg-2ubuntu0.4+esm38.10.0~dfsg-2ubuntu0.4+esm48.10.0~dfsg-2ubuntu0.4+esm58.10.0~dfsg-2ubuntu0.4+esm6
None known
nodejs
Ubuntu:Pro:20.04:LTS
All versions, plus listed versions
10.15.2~dfsg-2ubuntu110.17.0~dfsg-2ubuntu410.17.0~dfsg-2ubuntu610.19.0~dfsg-3ubuntu110.19.0~dfsg-3ubuntu1.1
Show 5 moreShow less
10.19.0~dfsg-3ubuntu1.210.19.0~dfsg-3ubuntu1.310.19.0~dfsg-3ubuntu1.510.19.0~dfsg-3ubuntu1.610.19.0~dfsg-3ubuntu1.6+esm2
None known
nodejs
Ubuntu:Pro:22.04:LTS
All versions, plus listed versions
12.22.5~dfsg-5ubuntu112.22.7~dfsg-2ubuntu112.22.7~dfsg-2ubuntu312.22.9~dfsg-1ubuntu212.22.9~dfsg-1ubuntu3
Show 7 moreShow less
12.22.9~dfsg-1ubuntu3.112.22.9~dfsg-1ubuntu3.212.22.9~dfsg-1ubuntu3.312.22.9~dfsg-1ubuntu3.412.22.9~dfsg-1ubuntu3.512.22.9~dfsg-1ubuntu3.612.22.9~dfsg-1ubuntu3.6+esm2
None known
nodejs
Ubuntu:24.04:LTS
All versions, plus listed versions
18.13.0+dfsg1-1ubuntu218.19.1+dfsg-2ubuntu418.19.1+dfsg-6ubuntu118.19.1+dfsg-6ubuntu218.19.1+dfsg-6ubuntu5
None known
nodejs
Ubuntu:26.10
All versions, plus listed versions
22.22.1+dfsg+~cs22.19.15-1ubuntu124.16.0+dfsg+~cs24.13.1-2ubuntu124.18.0+dfsg+~cs24.13.2-1ubuntu124.19.0+dfsg+~cs24.13.3-1ubuntu1
None known
nodejs
Ubuntu:26.04:LTS
All versions, plus listed versions
20.19.4+dfsg-120.19.5+dfsg+~cs20.19.12-422.21.1+dfsg+~cs22.19.0-6ubuntu422.22.0+dfsg+~cs22.19.6-1ubuntu222.22.0+dfsg+~cs22.19.13-2ubuntu122.22.1+dfsg+~cs22.19.15-1ubuntu1
None known

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-48932 is a low vulnerability (CVSS 3.7) in Nodejs Node, published August 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 19th percentile. Fixed in node 22.23.0.

References

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Left out here: 41 versions. The JSON record has them.

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