CVE-2021-32062: MapServer before 7.0.8, 7.1.x and 7.2.x before 7.2.3, 7.3.x and 7.4.x before 7.4.5, and 7.5.x and 7.6.x before

This month

MEDIUM 5.3REMOTEUPGRADEMITIGATE

CVE-2021-32062 is a medium-severity flaw (CVSS 5.3) affecting mapserver, fedora. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MapServer before 7.0.8, 7.1.x and 7.2.x before 7.2.3, 7.3.x and 7.4.x before 7.4.5, and 7.5.x and 7.6.x before 7.6.3 does not properly enforce the MS_MAP_NO_PATH and MS_MAP_PATTERN restrictions that are intended to control the locations from which a mapfile may be loaded (with MapServer CGI).

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.5% (top 26%)
CISA exploited list	No
Weakness	CWE-22
Published	2021-05-06
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: fedoraproject · osgeo

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

Am I affected?

Timeline

2021-05-06 13:15 UTCPublished CVE record published
2026-06-17 03:52 UTCUpdated Record last modified

osgeo mapserver UPGRADE

Affected: < 7.0.8 · >= 7.1.0 and < 7.2.3 · >= 7.3.0 and < 7.4.5 · >= 7.5.0 and < 7.6.3

Fixed in: 7.0.8, 7.2.3, 7.4.5, 7.6.3

Safe to downgrade to: a release before 7.1.0

1. Check installed version

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

2. UPGRADE to 7.0.8 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mapserver

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 7.1.0 (Debian / Ubuntu)

apt-cache madison mapserver sudo apt install mapserver=<VERSION_BEFORE_7.1.0> sudo apt-mark hold mapserver

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

dnf --showduplicates list mapserver sudo dnf downgrade mapserver-<VERSION_BEFORE_7.1.0> sudo dnf versionlock add mapserver

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.

fedoraproject fedora MITIGATE

Affected: 33 · 34

Fixed in: no fixed release known

Safe to downgrade to: a release before 33

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2021-32062?

mapserver: upgrade to 7.0.8, 7.2.3, 7.4.5, 7.6.3; fedora: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-32062 being exploited?

CVE-2021-32062 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-2021-32062 affect?

CVE-2021-32062 affects mapserver, fedora. Severity is medium (CVSS 5.3). MapServer before 7.0.8, 7.1.x and 7.2.x before 7.2.3, 7.3.x and 7.4.x before 7.4.5, and 7.5.x and 7.6.x before 7.6.3 does not properly enforce the MS_MAP_NO_PATH and MS_MAP_PATTERN restrictions that are intended to control the locations fro

How urgent is CVE-2021-32062?

Priority 42/100. Remotely exploitable, no login, no user action

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References

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