CVE-2026-10050: In Eclipse Jetty, the Digest authentication server-side component uses ISO-8859-1 to encode the password as by

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CRITICAL 9.1REMOTEUPGRADE

CVE-2026-10050 is a critical-severity flaw (CVSS 9.1) affecting jetty. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Eclipse Jetty, the Digest authentication server-side component uses ISO-8859-1 to encode the password as bytes. This was done because the initial specification for HTTP did not specify explicitly a charset, and it was assumed to be ISO-8859-1 for historical reasons. If the password contains characters that cannot be represented in ISO-8859-1, they are silently replaced by `?`. This happens with passwords that contain Chinese, Cyrillic or

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-173, CWE-303
Published	2026-08-04
Last modified	2026-08-08

Publisher (CNA): Eclipse Foundation · Vendor: eclipse

Last updated 2026-08-08 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-04 11:22 UTCPublished CVE record published
2026-08-08 00:38 UTCUpdated Record last modified

eclipse jetty UPGRADE

Affected: >= 9.4.0 and < 9.4.63 · >= 10.0.0 and < 10.0.31 · >= 11.0.0 and < 11.0.31 · >= 12.0.0 and < 12.0.36 · >= 12.1.0 and < 12.1.10

Fixed in: 9.4.63, 10.0.31, 11.0.31, 12.0.36, 12.1.10

Safe to downgrade to: a release before 9.4.0

1. Check installed version

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

2. UPGRADE to 9.4.63 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade jetty

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 9.4.0 (Debian / Ubuntu)

apt-cache madison jetty sudo apt install jetty=<VERSION_BEFORE_9.4.0> sudo apt-mark hold jetty

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

dnf --showduplicates list jetty sudo dnf downgrade jetty-<VERSION_BEFORE_9.4.0> sudo dnf versionlock add jetty

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-2026-10050?

jetty: upgrade to 9.4.63, 10.0.31, 11.0.31, 12.0.36, 12.1.10. Exact commands for each OS are on this page.

Is CVE-2026-10050 being exploited?

CVE-2026-10050 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-2026-10050 affect?

CVE-2026-10050 affects jetty. Severity is critical (CVSS 9.1). In Eclipse Jetty, the Digest authentication server-side component uses ISO-8859-1 to encode the password as bytes. This was done because the initial specification for HTTP did not specify explicitly a charset, and it was assumed to be IS

How urgent is CVE-2026-10050?

Priority 54/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

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References

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