CVE-2013-3648: Cross-site scripting (XSS) vulnerability in KENT-WEB POST-MAIL before 6.7, when Internet Explorer 7 or earlier

Q: How do I fix CVE-2013-3648?

post-mail: upgrade to newer than 6.62. Exact commands for each OS are on this page.

Q: Is CVE-2013-3648 being exploited?

CVE-2013-3648 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-2013-3648 affect?

CVE-2013-3648 affects post-mail. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in KENT-WEB POST-MAIL before 6.7, when Internet Explorer 7 or earlier is used, allows remote attackers to inject arbitrary web script or HTML via an unspecified form field.

Q: How urgent is CVE-2013-3648?

Priority 32/100. No elevated risk signals yet.

Routine

MEDIUM 4.3UPGRADE

CVE-2013-3648 is a medium-severity flaw (CVSS 4.3) affecting post-mail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in KENT-WEB POST-MAIL before 6.7, when Internet Explorer 7 or earlier is used, allows remote attackers to inject arbitrary web script or HTML via an unspecified form field.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.1% (top 33%)
CISA exploited list	No
Weakness	CWE-79
Published	2013-06-28
Last modified	2026-06-16

Publisher (CNA): JPCERT/CC · Vendor: kent-web

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

Am I affected?

Timeline

2013-06-28 23:55 UTCPublished CVE record published
2026-06-16 23:55 UTCUpdated Record last modified

kent-web post-mail UPGRADE

Affected: <= 6.62

Fixed in: newer than 6.62

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy post-mail || rpm -q post-mail || post-mail --version

2. UPGRADE to newer than 6.62 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade post-mail

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade post-mail

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-2013-3648?

post-mail: upgrade to newer than 6.62. Exact commands for each OS are on this page.

Is CVE-2013-3648 being exploited?

CVE-2013-3648 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-2013-3648 affect?

CVE-2013-3648 affects post-mail. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in KENT-WEB POST-MAIL before 6.7, when Internet Explorer 7 or earlier is used, allows remote attackers to inject arbitrary web script or HTML via an unspecified form field.

How urgent is CVE-2013-3648?

Priority 32/100. No elevated risk signals yet.

Software pages

Internet Explorer vulnerabilities

References

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