CVE-2022-21805: Reflected cross-site scripting vulnerability in the attached file name of php_mailform versions prior to Versi

Q: How do I fix CVE-2022-21805?

php mailform: upgrade to 1.4.0. Exact commands for each OS are on this page.

Q: Is CVE-2022-21805 being exploited?

CVE-2022-21805 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-21805 affect?

CVE-2022-21805 affects php mailform. Severity is medium (CVSS 6.1). Reflected cross-site scripting vulnerability in the attached file name of php_mailform versions prior to Version 1.40 allows a remote unauthenticated attacker to inject an arbitrary script via unspecified vectors.

Q: How urgent is CVE-2022-21805?

Priority 37/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2022-21805 is a medium-severity flaw (CVSS 6.1) affecting php mailform. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Reflected cross-site scripting vulnerability in the attached file name of php_mailform versions prior to Version 1.40 allows a remote unauthenticated attacker to inject an arbitrary script via unspecified vectors.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 39%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-02-08
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: econosys-system

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

Am I affected?

Timeline

2022-02-08 11:15 UTCPublished CVE record published
2026-06-17 04:27 UTCUpdated Record last modified

econosys-system php mailform UPGRADE

Affected: < 1.4.0

Fixed in: 1.4.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.4.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade php-mailform

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade php-mailform

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2022-21805?

php mailform: upgrade to 1.4.0. Exact commands for each OS are on this page.

Is CVE-2022-21805 being exploited?

CVE-2022-21805 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-2022-21805 affect?

CVE-2022-21805 affects php mailform. Severity is medium (CVSS 6.1). Reflected cross-site scripting vulnerability in the attached file name of php_mailform versions prior to Version 1.40 allows a remote unauthenticated attacker to inject an arbitrary script via unspecified vectors.

How urgent is CVE-2022-21805?

Priority 37/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2022-22142 MEDIUM 6.1 UPGRADE Reflected cross-site scripting vulnerability in the checkbox of php_mailform versions prior to Version 1.40 al

References

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