CVE-2026-100655
Netty (io.netty:netty-codec-http) versions up to and including 4.1.137.Final and from 4.2.0.Final...
This CVE ID has been rejected as a duplicate.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
What each source reports
GitHub Advisories Score usedGHSA-q842-gx74-cj48
Netty (io.netty:netty-codec-http) versions up to and including 4.1.137.Final and from 4.2.0.Final...
Netty (io.netty:netty-codec-http) versions up to and including 4.1.137.Final and from 4.2.0.Final through 4.2.17.Final accept an unlimited number of concurrent remote-initiated SPDY streams: SpdySessionHandler defaults localConcurrentStreams to Integer.MAX_VALUE and exposes no API to change it. A remote peer that opens a SPDY connection and sends millions of SYN_STREAM frames with FLAG_FIN=0 causes the server to allocate unbounded heap and direct memory, eventually triggering a JVM OutOfMemoryError and crashing the service. Fixed in 4.1.138.Final and 4.2.18.Final.
- Record
GHSA-q842-gx74-cj48- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-770
- Updated
- 2026-11-02
CVE List No score
This CVE ID has been rejected as a duplicate.
- Record
CVE-2026-100655- Updated
- 2026-11-02
EUVDEUVD-2026-87749
This CVE ID has been rejected as a duplicate.
- Record
EUVD-2026-87749- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Updated
- 2026-11-02
NVD No score
Rejected reason: This CVE ID has been rejected as a duplicate.
- Record
CVE-2026-100655- Updated
- 2026-11-02
OSV
Netty before 4.1.138.Final Denial of Service via SpdySessionHandler
Netty (io.netty:netty-codec-http) versions up to and including 4.1.137.Final and from 4.2.0.Final through 4.2.17.Final accept an unlimited number of concurrent remote-initiated SPDY streams: SpdySessionHandler defaults localConcurrentStreams to Integer.MAX_VALUE and exposes no API to change it. A remote peer that opens a SPDY connection and sends millions of SYN_STREAM frames with FLAG_FIN=0 causes the server to allocate unbounded heap and direct memory, eventually triggering a JVM OutOfMemoryError and crashing the service. Fixed in 4.1.138.Final and 4.2.18.Final.
- Record
CVE-2026-100655- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-770
- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
nettyDebian:12 |
All versions, plus listed versions 1:4.1.48-101:4.1.48-111:4.1.48-121:4.1.48-131:4.1.48-14 Show 7 moreShow less1:4.1.48-151:4.1.48-161:4.1.48-71:4.1.48-7+deb12u11:4.1.48-7+deb12u21:4.1.48-81:4.1.48-9 |
None known |
nettyDebian:13 |
All versions, plus listed versions 1:4.1.48-101:4.1.48-10+deb13u11:4.1.48-111:4.1.48-121:4.1.48-131:4.1.48-141:4.1.48-151:4.1.48-16 |
None known |
nettyDebian:14 |
All versions, plus listed versions 1:4.1.48-101:4.1.48-111:4.1.48-121:4.1.48-131:4.1.48-141:4.1.48-151:4.1.48-16 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-100655 has been rejected by its source and should not be treated as a live vulnerability, published September 26, 2026.
References
github.com/netty/netty/security/advisories/GHSA-rmcw-9fcq-wjq7
nvd.nist.gov/vuln/detail/CVE-2026-100655
vulncheck.com/advisories/netty-before-4.1.138-final-denial-of-service-via-spdysessionhandler
security-tracker.debian.org/tracker/CVE-2026-100655