CVE-2020-23972: In Joomla Component GMapFP Version J3.5 and J3.5free, an attacker can access the upload function without authe

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HIGH 7.5REMOTEDOWNGRADE

CVE-2020-23972 is a high-severity flaw (CVSS 7.5) affecting gmapfp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Joomla Component GMapFP Version J3.5 and J3.5free, an attacker can access the upload function without authenticating to the application and can also upload files which due to issues of unrestricted file uploads which can be bypassed by changing the content-type and name file too double extensions.

Why this priority

High severity
EPSS top 2%: very likely to be exploited
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	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	31.4% (top 2%)
CISA exploited list	No
Weakness	CWE-434
Published	2020-08-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: gmapfp

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

Am I affected?

Timeline

2020-08-27 14:15 UTCPublished CVE record published
2026-06-17 03:05 UTCUpdated Record last modified

gmapfp gmapfp DOWNGRADE

Affected: j3.5

Fixed in: no fixed release known

Safe to downgrade to: a release before j3.5

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before j3.5 (Debian / Ubuntu)

apt-cache madison gmapfp sudo apt install gmapfp=<VERSION_BEFORE_j3.5> sudo apt-mark hold gmapfp

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

dnf --showduplicates list gmapfp sudo dnf downgrade gmapfp-<VERSION_BEFORE_j3.5> sudo dnf versionlock add gmapfp

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Joomla! Component GMapFP 3.5 - Unauthenticated Arbitrary File Upload
Nuclei scan template: Joomla! Component GMapFP 3.5 - Arbitrary File Upload

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-2020-23972?

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

Is CVE-2020-23972 being exploited?

CVE-2020-23972 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-2020-23972 affect?

CVE-2020-23972 affects gmapfp. Severity is high (CVSS 7.5). In Joomla Component GMapFP Version J3.5 and J3.5free, an attacker can access the upload function without authenticating to the application and can also upload files which due to issues of unrestricted file uploads which can be bypassed by c

How urgent is CVE-2020-23972?

Priority 61/100. High severity; EPSS top 2%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Joomla vulnerabilities

Related CVEs

CVE-2020-23971 HIGH 7.5 DOWNGRADE gmapfp.org Joomla Component GMapFP J3.30pro is affected by Insecure Permissions

References

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