Answer in brief
CVE-2026-41715 records a Medium severity (CVSS 6.1) secret exfiltration vulnerability in Reactor Netty HTTP Client Leaks Credentials On Protocol Downgrade Redirect. The source record does not mark it as known exploited. 4 affected packages are mapped in the feed.
Answer in brief
CVE-2026-41715 records a Medium severity (CVSS 6.1) secret exfiltration vulnerability in Reactor Netty HTTP Client Leaks Credentials On Protocol Downgrade Redirect. The source record does not mark it as known exploited. 4 affected packages are mapped in the feed.
Update io.projectreactor.netty:reactor-netty to 1.3.6; io.projectreactor.netty:reactor-netty to 1.2.18 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanSecret Exfiltration describes the vulnerability class recorded for this advisory. The current record does not mark CVE-2026-41715 as known exploited; continue to monitor the source for status changes. The feed includes package mappings that can be checked against lockfiles and deployed manifests.
| Package | Affected range | Fixed version |
|---|---|---|
| io.projectreactor.netty:reactor-nettymaven | >=1.3.0,<=1.3.5 | 1.3.6 |
| io.projectreactor.netty:reactor-nettymaven | >=1.2.0,<=1.2.17 | 1.2.18 |
| io.projectreactor.netty:reactor-nettymaven | >=1.1.0,<=1.1.31 | Not reported |
| io.projectreactor.netty:reactor-nettymaven | >=1.0.0,<=1.0.48 | Not reported |
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
CVE-2026-41715 records a Medium severity (CVSS 6.1) secret exfiltration vulnerability in Reactor Netty HTTP Client Leaks Credentials On Protocol Downgrade Redirect. The source record does not mark it as known exploited. 4 affected packages are mapped in the feed.
The source record does not mark it as known exploited.
Check lockfiles and deployed manifests for io.projectreactor.netty:reactor-netty, io.projectreactor.netty:reactor-netty, io.projectreactor.netty:reactor-netty.
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL GuardUpdate io.projectreactor.netty:reactor-netty to 1.3.6; io.projectreactor.netty:reactor-netty to 1.2.18 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanSecret Exfiltration describes the vulnerability class recorded for this advisory. The current record does not mark CVE-2026-41715 as known exploited; continue to monitor the source for status changes. The feed includes package mappings that can be checked against lockfiles and deployed manifests.
| Package | Affected range | Fixed version |
|---|---|---|
| io.projectreactor.netty:reactor-nettymaven | >=1.3.0,<=1.3.5 | 1.3.6 |
| io.projectreactor.netty:reactor-nettymaven | >=1.2.0,<=1.2.17 | 1.2.18 |
| io.projectreactor.netty:reactor-nettymaven | >=1.1.0,<=1.1.31 | Not reported |
| io.projectreactor.netty:reactor-nettymaven | >=1.0.0,<=1.0.48 | Not reported |
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
CVE-2026-41715 records a Medium severity (CVSS 6.1) secret exfiltration vulnerability in Reactor Netty HTTP Client Leaks Credentials On Protocol Downgrade Redirect. The source record does not mark it as known exploited. 4 affected packages are mapped in the feed.
The source record does not mark it as known exploited.
Check lockfiles and deployed manifests for io.projectreactor.netty:reactor-netty, io.projectreactor.netty:reactor-netty, io.projectreactor.netty:reactor-netty.
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL GuardIn specific scenarios involving HTTP redirects from a secure to an insecure endpoint, the Reactor Netty HTTP client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects. Affected versions: Reactor Netty 1.0.0 through 1.0.51; 1.1.0 through 1.1.35; 1.2.0 through 1.2.17; 1.3.0 through 1.3.5.
In specific scenarios involving HTTP redirects from a secure to an insecure endpoint, the Reactor Netty HTTP client may leak credentials. In order for this to happen, the HTTP client must have been explicitly configured to follow redirects. Affected versions: Reactor Netty 1.0.0 through 1.0.51; 1.1.0 through 1.1.35; 1.2.0 through 1.2.17; 1.3.0 through 1.3.5.