CVE-2020-18404: An issue was discovered in espcms version P8.18101601

Routine

MEDIUM 4.8DOWNGRADE

CVE-2020-18404 is a medium-severity flaw (CVSS 4.8) affecting espcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in espcms version P8.18101601. There is a cross site scripting (XSS) vulnerability that allows arbitrary code to be executed via the title parameter.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-06-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ecisp

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

Am I affected?

Timeline

2023-06-27 21:15 UTCPublished CVE record published
2026-06-17 02:59 UTCUpdated Record last modified

ecisp espcms DOWNGRADE

Affected: p8.18101601

Fixed in: no fixed release known

Safe to downgrade to: a release before p8.18101601

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before p8.18101601 (Debian / Ubuntu)

apt-cache madison espcms sudo apt install espcms=<VERSION_BEFORE_p8.18101601> sudo apt-mark hold espcms

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

dnf --showduplicates list espcms sudo dnf downgrade espcms-<VERSION_BEFORE_p8.18101601> sudo dnf versionlock add espcms

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-2020-18404?

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

Is CVE-2020-18404 being exploited?

CVE-2020-18404 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-2020-18404 affect?

CVE-2020-18404 affects espcms. Severity is medium (CVSS 4.8). An issue was discovered in espcms version P8.18101601. There is a cross site scripting (XSS) vulnerability that allows arbitrary code to be executed via the title parameter.

How urgent is CVE-2020-18404?

Priority 30/100. Public exploit reference

Related CVEs

CVE-2022-44089 CRITICAL 9.8 DOWNGRADE ESPCMS P8.21120101 was discovered to contain a remote code execution (RCE) vulnerability in the component IS_G
CVE-2022-44088 CRITICAL 9.8 DOWNGRADE ESPCMS P8.21120101 was discovered to contain a remote code execution (RCE) vulnerability in the component INPU
CVE-2022-44087 CRITICAL 9.8 DOWNGRADE ESPCMS P8.21120101 was discovered to contain a remote code execution (RCE) vulnerability in the component UPFI
CVE-2023-23007 HIGH 7.2 DOWNGRADE An issue was discovered in ESPCMS P8.21120101 after logging in to the background, there is a SQL injection vul
CVE-2023-0246 LOW 3.5 DOWNGRADE A vulnerability, which was classified as problematic, was found in earclink ESPCMS P8.21120101

References

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