CVE-2016-1499: ownCloud Server before 8.0.10, 8.1.x before 8.1.5, and 8.2.x before 8.2.2 allow remote authenticated users to

This month

HIGH 8.5UPGRADEDOWNGRADE

CVE-2016-1499 is a high-severity flaw (CVSS 8.5) affecting owncloud, owncloud server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ownCloud Server before 8.0.10, 8.1.x before 8.1.5, and 8.2.x before 8.2.2 allow remote authenticated users to obtain sensitive information from a directory listing and possibly cause a denial of service (CPU consumption) via the force parameter to index.php/apps/files/ajax/scan.php.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	3.5% (top 11%)
CISA exploited list	No
Weakness	CWE-200, CWE-399
Published	2016-01-08
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: owncloud

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

Am I affected?

Timeline

2016-01-08 21:59 UTCPublished CVE record published
2026-06-17 00:42 UTCUpdated Record last modified

owncloud owncloud UPGRADE

Affected: <= 8.0.9 · 8.2.0 · 8.2.1

Fixed in: newer than 8.0.9

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 8.0.9 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade owncloud

Note

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

owncloud owncloud server DOWNGRADE

Affected: 8.1.0 · 8.1.1 · 8.1.3 · 8.1.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.1.0

1. Check installed version

apt-cache policy owncloud-server || rpm -q owncloud-server || owncloud-server --version

2. No fixed release: DOWNGRADE to a release before 8.1.0 (Debian / Ubuntu)

apt-cache madison owncloud-server sudo apt install owncloud-server=<VERSION_BEFORE_8.1.0> sudo apt-mark hold owncloud-server

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

dnf --showduplicates list owncloud-server sudo dnf downgrade owncloud-server-<VERSION_BEFORE_8.1.0> sudo dnf versionlock add owncloud-server

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-2016-1499?

owncloud: upgrade to newer than 8.0.9; owncloud server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2016-1499 being exploited?

CVE-2016-1499 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-2016-1499 affect?

CVE-2016-1499 affects owncloud, owncloud server. Severity is high (CVSS 8.5). ownCloud Server before 8.0.10, 8.1.x before 8.1.5, and 8.2.x before 8.2.2 allow remote authenticated users to obtain sensitive information from a directory listing and possibly cause a denial of service (CPU consumption) via the force param

How urgent is CVE-2016-1499?

Priority 57/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities · ownCloud vulnerabilities

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References

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