CVE-2026-47848
Reactor Netty WebSocket Client Leaks Credentials On Redirect
In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Reactor Netty WebSocket Client Leaks Credentials On Redirect
In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier
- Record
CVE-2026-47848- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
EUVDEUVD-2026-66680
In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier
- Record
EUVD-2026-66680- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-6p7h-426w-rcrx
In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor...
In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier
- Record
GHSA-6p7h-426w-rcrx- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-601
- Updated
- 2026-11-02
NVD
In specific scenarios involving WebSocket handshake redirects to a different origin, the Reactor Netty WebSocket client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier
- Record
CVE-2026-47848- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-601
- Updated
- 2026-11-02
OSVCLSA-2026-1791529633 No score
TuxCare security update for io.projectreactor.netty (5 CVEs)
TuxCare rebuilt 3 io.projectreactor.netty packages to address 5 CVEs. Fixed in 1.1.31-tuxcare.4.
- Record
CLSA-2026-1791529633- Updated
- 2026-11-02
OSVCLSA-2026-1791547948 No score
TuxCare security update for io.projectreactor.netty (5 CVEs)
TuxCare rebuilt 3 io.projectreactor.netty packages to address 5 CVEs. Fixed in 1.0.48-tuxcare.5.
- Record
CLSA-2026-1791547948- Updated
- 2026-11-02
Show 4 moreShow less
OSVCLSA-2026-1791989666 No score
TuxCare security update for io.projectreactor.netty (5 CVEs)
TuxCare rebuilt 3 io.projectreactor.netty packages to address 5 CVEs. Fixed in 1.2.18-tuxcare.2.
- Record
CLSA-2026-1791989666- Updated
- 2026-11-02
OSVCLSA-2026-1792505040 No score
TuxCare security update for io.projectreactor.netty (5 CVEs)
TuxCare rebuilt 3 io.projectreactor.netty packages to address 5 CVEs. Fixed in 1.0.32-tuxcare.6.
- Record
CLSA-2026-1792505040- Updated
- 2026-11-02
OSVCLSA-2026-1793116571 No score
TuxCare security update for io.projectreactor.netty (5 CVEs)
TuxCare rebuilt 3 io.projectreactor.netty packages to address 5 CVEs. Fixed in 1.1.15-tuxcare.3.
- Record
CLSA-2026-1793116571- Updated
- 2026-11-02
OSVCLSA-2026-1793345120 No score
TuxCare security update for io.projectreactor.netty (8 CVEs)
TuxCare rebuilt 4 io.projectreactor.netty packages to address 8 CVEs. Fixed in 1.0.34-tuxcare.1.
- Record
CLSA-2026-1793345120- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
io.projectreactor.netty:reactor-netty-coreTuxCare:Maven From an advisory covering 5 CVEs |
1.1.31 up to 1.1.31-tuxcare.4, plus listed versions 1.1.31-tuxcare.11.1.31-tuxcare.21.1.31-tuxcare.3 |
1.1.31-tuxcare.4 |
io.projectreactor.netty:reactor-netty-httpTuxCare:Maven From an advisory covering 5 CVEs |
1.1.31 up to 1.1.31-tuxcare.4, plus listed versions 1.1.31-tuxcare.11.1.31-tuxcare.21.1.31-tuxcare.3 |
1.1.31-tuxcare.4 |
io.projectreactor.netty:reactor-netty-http-braveTuxCare:Maven From an advisory covering 5 CVEs |
1.1.31 up to 1.1.31-tuxcare.4, plus listed versions 1.1.31-tuxcare.11.1.31-tuxcare.21.1.31-tuxcare.3 |
1.1.31-tuxcare.4 |
io.projectreactor.netty:reactor-netty-coreTuxCare:Maven From an advisory covering 5 CVEs |
1.0.48 up to 1.0.48-tuxcare.5, plus listed versions 1.0.48-tuxcare.11.0.48-tuxcare.21.0.48-tuxcare.31.0.48-tuxcare.4 |
1.0.48-tuxcare.5 |
io.projectreactor.netty:reactor-netty-httpTuxCare:Maven From an advisory covering 5 CVEs |
1.0.48 up to 1.0.48-tuxcare.5, plus listed versions 1.0.48-tuxcare.11.0.48-tuxcare.21.0.48-tuxcare.31.0.48-tuxcare.4 |
1.0.48-tuxcare.5 |
io.projectreactor.netty:reactor-netty-http-braveTuxCare:Maven From an advisory covering 5 CVEs |
1.0.48 up to 1.0.48-tuxcare.5, plus listed versions 1.0.48-tuxcare.11.0.48-tuxcare.21.0.48-tuxcare.31.0.48-tuxcare.4 |
1.0.48-tuxcare.5 |
io.projectreactor.netty:reactor-netty-coreTuxCare:Maven From an advisory covering 5 CVEs |
1.2.18 up to 1.2.18-tuxcare.2, plus listed versions 1.2.18-tuxcare.1 |
1.2.18-tuxcare.2 |
io.projectreactor.netty:reactor-netty-httpTuxCare:Maven From an advisory covering 5 CVEs |
1.2.18 up to 1.2.18-tuxcare.2, plus listed versions 1.2.18-tuxcare.1 |
1.2.18-tuxcare.2 |
io.projectreactor.netty:reactor-netty-http-braveTuxCare:Maven From an advisory covering 5 CVEs |
1.2.18 up to 1.2.18-tuxcare.2, plus listed versions 1.2.18-tuxcare.1 |
1.2.18-tuxcare.2 |
io.projectreactor.netty:reactor-netty-coreTuxCare:Maven From an advisory covering 5 CVEs |
1.0.32 up to 1.0.32-tuxcare.6, plus listed versions 1.0.32-tuxcare.11.0.32-tuxcare.21.0.32-tuxcare.31.0.32-tuxcare.41.0.32-tuxcare.5 |
1.0.32-tuxcare.6 |
Show 9 moreShow less
| Package | Affected | Fixed |
|---|---|---|
io.projectreactor.netty:reactor-netty-httpTuxCare:Maven From an advisory covering 5 CVEs |
1.0.32 up to 1.0.32-tuxcare.6, plus listed versions 1.0.32-tuxcare.11.0.32-tuxcare.21.0.32-tuxcare.31.0.32-tuxcare.41.0.32-tuxcare.5 |
1.0.32-tuxcare.6 |
io.projectreactor.netty:reactor-netty-http-braveTuxCare:Maven From an advisory covering 5 CVEs |
1.0.32 up to 1.0.32-tuxcare.6, plus listed versions 1.0.32-tuxcare.11.0.32-tuxcare.21.0.32-tuxcare.31.0.32-tuxcare.41.0.32-tuxcare.5 |
1.0.32-tuxcare.6 |
io.projectreactor.netty:reactor-netty-coreTuxCare:Maven From an advisory covering 5 CVEs |
1.1.15 up to 1.1.15-tuxcare.3, plus listed versions 1.1.15-tuxcare.11.1.15-tuxcare.2 |
1.1.15-tuxcare.3 |
io.projectreactor.netty:reactor-netty-httpTuxCare:Maven From an advisory covering 5 CVEs |
1.1.15 up to 1.1.15-tuxcare.3, plus listed versions 1.1.15-tuxcare.11.1.15-tuxcare.2 |
1.1.15-tuxcare.3 |
io.projectreactor.netty:reactor-netty-http-braveTuxCare:Maven From an advisory covering 5 CVEs |
1.1.15 up to 1.1.15-tuxcare.3, plus listed versions 1.1.15-tuxcare.11.1.15-tuxcare.2 |
1.1.15-tuxcare.3 |
io.projectreactor.netty:reactor-nettyTuxCare:Maven From an advisory covering 8 CVEs |
1.0.34 up to 1.0.34-tuxcare.1 | 1.0.34-tuxcare.1 |
io.projectreactor.netty:reactor-netty-coreTuxCare:Maven From an advisory covering 8 CVEs |
1.0.34 up to 1.0.34-tuxcare.1 | 1.0.34-tuxcare.1 |
io.projectreactor.netty:reactor-netty-httpTuxCare:Maven From an advisory covering 8 CVEs |
1.0.34 up to 1.0.34-tuxcare.1 | 1.0.34-tuxcare.1 |
io.projectreactor.netty:reactor-netty-http-braveTuxCare:Maven From an advisory covering 8 CVEs |
1.0.34 up to 1.0.34-tuxcare.1 | 1.0.34-tuxcare.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| affected | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-47848 is a medium vulnerability (CVSS 6.1) in Broadcom Reactor Netty, published August 26, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.26%, the 17th percentile. No source names a fixed version.