CVE-2020-7622: This affects the package io.jooby:jooby-netty before 1.6.9, from 2.0.0 and before 2.2.1

This week

MEDIUM 6.5REMOTEUPGRADE

CVE-2020-7622 is a medium-severity flaw (CVSS 6.5) affecting jooby. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

This affects the package io.jooby:jooby-netty before 1.6.9, from 2.0.0 and before 2.2.1. The DefaultHttpHeaders is set to false which means it does not validates that the header isn't being abused for HTTP Response Splitting.

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Published	2020-04-06
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: jooby

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

Am I affected?

Timeline

2020-04-06 15:15 UTCPublished CVE record published
2026-06-17 03:25 UTCUpdated Record last modified

jooby jooby UPGRADE

Affected: < 1.6.9 · >= 2.0.0 and < 2.2.1

Fixed in: 1.6.9, 2.2.1

Safe to downgrade to: a release before 2.0.0

1. Check installed version

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

2. UPGRADE to 1.6.9 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade jooby

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 2.0.0 (Debian / Ubuntu)

apt-cache madison jooby sudo apt install jooby=<VERSION_BEFORE_2.0.0> sudo apt-mark hold jooby

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

dnf --showduplicates list jooby sudo dnf downgrade jooby-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add jooby

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-2020-7622?

jooby: upgrade to 1.6.9, 2.2.1. Exact commands for each OS are on this page.

Is CVE-2020-7622 being exploited?

CVE-2020-7622 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-2020-7622 affect?

CVE-2020-7622 affects jooby. Severity is medium (CVSS 6.5). This affects the package io.jooby:jooby-netty before 1.6.9, from 2.0.0 and before 2.2.1. The DefaultHttpHeaders is set to false which means it does not validates that the header isn't being abused for HTTP Response Splitting.

How urgent is CVE-2020-7622?

Priority 52/100. Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2020-7647 MEDIUM 5.3 UPGRADE All versions before 1.6.7 and all versions after 2.0.0 inclusive and before 2.8.2 of io.jooby:jooby and org.jo
CVE-2019-15477 MEDIUM 6.1 UPGRADE Jooby before 1.6.4 has XSS via the default error handler.

References

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