CVE-2020-18409: Cross Site Request Forgery (CSRF) vulnerability was discovered in CatfishCMS 4.8.63 that would allow attackers

Routine

MEDIUM 6.8DOWNGRADE

CVE-2020-18409 is a medium-severity flaw (CVSS 6.8) affecting catfishcms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross Site Request Forgery (CSRF) vulnerability was discovered in CatfishCMS 4.8.63 that would allow attackers to obtain administrator permissions via /index.php/admin/index/modifymanage.html.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-352
Published	2023-06-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: catfishcms project

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

catfishcms project catfishcms DOWNGRADE

Affected: 4.8.63

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.8.63

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.8.63 (Debian / Ubuntu)

apt-cache madison catfishcms sudo apt install catfishcms=<VERSION_BEFORE_4.8.63> sudo apt-mark hold catfishcms

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

dnf --showduplicates list catfishcms sudo dnf downgrade catfishcms-<VERSION_BEFORE_4.8.63> sudo dnf versionlock add catfishcms

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-2020-18409?

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

Is CVE-2020-18409 being exploited?

CVE-2020-18409 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-2020-18409 affect?

CVE-2020-18409 affects catfishcms. Severity is medium (CVSS 6.8). Cross Site Request Forgery (CSRF) vulnerability was discovered in CatfishCMS 4.8.63 that would allow attackers to obtain administrator permissions via /index.php/admin/index/modifymanage.html.

How urgent is CVE-2020-18409?

Priority 35/100. Public exploit reference

Software pages

PHP vulnerabilities

References

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