CVE-2017-11566: AppUse 4.0 allows shell command injection via a proxy field.

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HIGH 7.8DOWNGRADE

CVE-2017-11566 is a high-severity flaw (CVSS 7.8) affecting appuse. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

AppUse 4.0 allows shell command injection via a proxy field.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-78
Published	2017-07-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: appsec-labs

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

Am I affected?

Timeline

2017-07-25 15:29 UTCPublished CVE record published
2026-06-17 01:02 UTCUpdated Record last modified

appsec-labs appuse DOWNGRADE

Affected: 4.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.0 (Debian / Ubuntu)

apt-cache madison appuse sudo apt install appuse=<VERSION_BEFORE_4.0> sudo apt-mark hold appuse

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list appuse sudo dnf downgrade appuse-<VERSION_BEFORE_4.0> sudo dnf versionlock add appuse

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-2017-11566?

appuse: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2017-11566 being exploited?

CVE-2017-11566 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-2017-11566 affect?

CVE-2017-11566 affects appuse. Severity is high (CVSS 7.8). AppUse 4.0 allows shell command injection via a proxy field.

How urgent is CVE-2017-11566?

Priority 42/100. High severity

References

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