CVE-2026-41585: ZEBRA is a Zcash node written entirely in Rust

Routine

MEDIUM 6.5UPGRADEUPGRADE

CVE-2026-41585 is a medium-severity flaw (CVSS 6.5) affecting zebra-rpc, zebrad. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ZEBRA is a Zcash node written entirely in Rust. From zebrad versions 2.2.0 to before 4.3.1 and from zebra-rpc versions 1.0.0-beta.45 to before 6.0.2, a vulnerability in Zebra's JSON-RPC HTTP middleware allows an authenticated RPC client to cause a Zebra node to crash by disconnecting before the request body is fully received. The node treats the failure to read the HTTP request body as an unrecoverable error and aborts the process instead of retu

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 83%)
CISA exploited list	No
Weakness	CWE-248, CWE-617
Published	2026-05-08
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: zfnd

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-08 15:16 UTCPublished CVE record published
2026-06-17 10:46 UTCUpdated Record last modified

zfnd zebra-rpc UPGRADE

Affected: >= 2.0.0 and < 6.0.2 · 1.0.0 · 1.0.0 beta45 · 1.0.0 beta46

Fixed in: 6.0.2

Safe to downgrade to: a release before 1.0.0

1. Check installed version

apt-cache policy zebra-rpc || rpm -q zebra-rpc || zebra-rpc --version

2. UPGRADE to 6.0.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade zebra-rpc

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade zebra-rpc

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.0.0 (Debian / Ubuntu)

apt-cache madison zebra-rpc sudo apt install zebra-rpc=<VERSION_BEFORE_1.0.0> sudo apt-mark hold zebra-rpc

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list zebra-rpc sudo dnf downgrade zebra-rpc-<VERSION_BEFORE_1.0.0> sudo dnf versionlock add zebra-rpc

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

zfnd zebrad UPGRADE

Affected: >= 2.2.0 and < 4.3.1

Fixed in: 4.3.1

Safe to downgrade to: a release before 2.2.0

1. Check installed version

apt-cache policy zebrad || rpm -q zebrad || zebrad --version

2. UPGRADE to 4.3.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade zebrad

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade zebrad

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.2.0 (Debian / Ubuntu)

apt-cache madison zebrad sudo apt install zebrad=<VERSION_BEFORE_2.2.0> sudo apt-mark hold zebrad

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list zebrad sudo dnf downgrade zebrad-<VERSION_BEFORE_2.2.0> sudo dnf versionlock add zebrad

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-41585?

zebra-rpc: upgrade to 6.0.2; zebrad: upgrade to 4.3.1. Exact commands for each OS are on this page.

Is CVE-2026-41585 being exploited?

CVE-2026-41585 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-41585 affect?

CVE-2026-41585 affects zebra-rpc, zebrad. Severity is medium (CVSS 6.5). ZEBRA is a Zcash node written entirely in Rust. From zebrad versions 2.2.0 to before 4.3.1 and from zebra-rpc versions 1.0.0-beta.45 to before 6.0.2, a vulnerability in Zebra's JSON-RPC HTTP middleware allows an authenticated RPC client to

How urgent is CVE-2026-41585?

Priority 27/100. No elevated risk signals yet.

References

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