CVE-2020-9543: OpenStack Manila <7.4.1, >=8.0.0 <8.1.1, and >=9.0.0 <9.1.1 allows attackers to view, update, delete, or share

Q: How urgent is CVE-2020-9543?

Priority 52/100. High severity; Public exploit reference

This month

HIGH 8.3UPGRADE

CVE-2020-9543 is a high-severity flaw (CVSS 8.3) affecting manila. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OpenStack Manila <7.4.1, >=8.0.0 <8.1.1, and >=9.0.0 <9.1.1 allows attackers to view, update, delete, or share resources that do not belong to them, because of a context-free lookup of a UUID. Attackers may also create resources, such as shared file systems and groups of shares on such share networks.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.3% (top 29%)
CISA exploited list	No
Weakness	CWE-276
Published	2020-03-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: openstack

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

Am I affected?

Timeline

2020-03-12 17:15 UTCPublished CVE record published
2026-06-17 03:28 UTCUpdated Record last modified

openstack manila UPGRADE

Affected: < 7.4.1 · >= 8.0.0 and < 8.1.1 · >= 9.0.0 and < 9.1.1

Fixed in: 7.4.1, 8.1.1, 9.1.1

Safe to downgrade to: a release before 8.0.0

1. Check installed version

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

2. UPGRADE to 7.4.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade manila

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 8.0.0 (Debian / Ubuntu)

apt-cache madison manila sudo apt install manila=<VERSION_BEFORE_8.0.0> sudo apt-mark hold manila

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

dnf --showduplicates list manila sudo dnf downgrade manila-<VERSION_BEFORE_8.0.0> sudo dnf versionlock add manila

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-2020-9543?

manila: upgrade to 7.4.1, 8.1.1, 9.1.1. Exact commands for each OS are on this page.

Is CVE-2020-9543 being exploited?

CVE-2020-9543 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-2020-9543 affect?

CVE-2020-9543 affects manila. Severity is high (CVSS 8.3). OpenStack Manila <7.4.1, >=8.0.0 <8.1.1, and >=9.0.0 <9.1.1 allows attackers to view, update, delete, or share resources that do not belong to them, because of a context-free lookup of a UUID. Attackers may also create resources, such as sh

How urgent is CVE-2020-9543?

Priority 52/100. High severity; Public exploit reference

Software pages

OpenStack vulnerabilities

Related CVEs

CVE-2016-6519 MEDIUM 5.4 DOWNGRADE UPGRADE Cross-site scripting (XSS) vulnerability in the "Shares" overview in Openstack Manila before 2.5.1 allows remo
CVE-2006-1769 MEDIUM 6.8 UPGRADE Multiple cross-site scripting (XSS) vulnerabilities in UserLand Manila 9.5 and earlier allow remote attackers

References

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