CVE-2020-19275: An Information Disclosure vulnerability exists in dhcms 2017-09-18 when entering invalid characters after the

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MEDIUM 5.3REMOTEDOWNGRADE

CVE-2020-19275 is a medium-severity flaw (CVSS 5.3) affecting dhcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An Information Disclosure vulnerability exists in dhcms 2017-09-18 when entering invalid characters after the normal interface, which causes an error that will leak the physical path.

Why this priority

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

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

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-209
Published	2021-05-12
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: dhcms project

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

Am I affected?

Timeline

2021-05-12 18:15 UTCPublished CVE record published
2026-06-17 02:59 UTCUpdated Record last modified

dhcms project dhcms DOWNGRADE

Affected: 2017-09-18

Fixed in: no fixed release known

Safe to downgrade to: a release before 2017-09-18

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2017-09-18 (Debian / Ubuntu)

apt-cache madison dhcms sudo apt install dhcms=<VERSION_BEFORE_2017-09-18> sudo apt-mark hold dhcms

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

dnf --showduplicates list dhcms sudo dnf downgrade dhcms-<VERSION_BEFORE_2017-09-18> sudo dnf versionlock add dhcms

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-2020-19275?

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

Is CVE-2020-19275 being exploited?

CVE-2020-19275 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-2020-19275 affect?

CVE-2020-19275 affects dhcms. Severity is medium (CVSS 5.3). An Information Disclosure vulnerability exists in dhcms 2017-09-18 when entering invalid characters after the normal interface, which causes an error that will leak the physical path.

How urgent is CVE-2020-19275?

Priority 45/100. Public exploit reference; Remotely exploitable, no login, no user action

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References

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