CVE-2010-4939: PHP remote file inclusion vulnerability in index.php in MailForm 1.2 allows remote attackers to execute arbitr

This month

HIGH 7.5DOWNGRADE

CVE-2010-4939 is a high-severity flaw (CVSS 7.5) affecting mailform. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP remote file inclusion vulnerability in index.php in MailForm 1.2 allows remote attackers to execute arbitrary PHP code via a URL in the theme parameter.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Weakness	CWE-94
Published	2011-10-09
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: scripts.bdr130

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2011-10-09 10:55 UTCPublished CVE record published
2026-06-16 23:25 UTCUpdated Record last modified

scripts.bdr130 mailform DOWNGRADE

Affected: 1.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.2 (Debian / Ubuntu)

apt-cache madison mailform sudo apt install mailform=<VERSION_BEFORE_1.2> sudo apt-mark hold mailform

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

dnf --showduplicates list mailform sudo dnf downgrade mailform-<VERSION_BEFORE_1.2> sudo dnf versionlock add mailform

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: MailForm 1.2 - Remote File Inclusion

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-2010-4939?

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

Is CVE-2010-4939 being exploited?

CVE-2010-4939 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-2010-4939 affect?

CVE-2010-4939 affects mailform. Severity is high (CVSS 7.5). PHP remote file inclusion vulnerability in index.php in MailForm 1.2 allows remote attackers to execute arbitrary PHP code via a URL in the theme parameter.

How urgent is CVE-2010-4939?

Priority 52/100. High severity; Public exploit reference

Software pages

PHP vulnerabilities

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References

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