CVE-2023-28705: Openfind Mail2000 has insufficient filtering special characters of email content of its content filtering func

Q: How do I fix CVE-2023-28705?

mail2000: upgrade to 8.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-28705 being exploited?

CVE-2023-28705 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-2023-28705 affect?

CVE-2023-28705 affects mail2000. Severity is medium (CVSS 5.4). Openfind Mail2000 has insufficient filtering special characters of email content of its content filtering function. A remote attacker can exploit this vulnerability using phishing emails that contain malicious web pages injected with JavaSc

Q: How urgent is CVE-2023-28705?

Priority 28/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2023-28705 is a medium-severity flaw (CVSS 5.4) affecting mail2000. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Openfind Mail2000 has insufficient filtering special characters of email content of its content filtering function. A remote attacker can exploit this vulnerability using phishing emails that contain malicious web pages injected with JavaScript. When users access the system and open the email, it triggers an XSS (Reflected Cross-site scripting) attack.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-06-02
Last modified	2026-06-17

Publisher (CNA): TWCERT/CC · Vendor: openfind

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

Am I affected?

Timeline

2023-06-02 11:15 UTCPublished CVE record published
2026-06-17 05:48 UTCUpdated Record last modified

openfind mail2000 UPGRADE

Affected: < 8.0

Fixed in: 8.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mail2000 || rpm -q mail2000 || mail2000 --version

2. UPGRADE to 8.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mail2000

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mail2000

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-2023-28705?

mail2000: upgrade to 8.0. Exact commands for each OS are on this page.

Is CVE-2023-28705 being exploited?

CVE-2023-28705 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-2023-28705 affect?

CVE-2023-28705 affects mail2000. Severity is medium (CVSS 5.4). Openfind Mail2000 has insufficient filtering special characters of email content of its content filtering function. A remote attacker can exploit this vulnerability using phishing emails that contain malicious web pages injected with JavaSc

How urgent is CVE-2023-28705?

Priority 28/100. No elevated risk signals yet.

Related CVEs

CVE-2024-6741 MEDIUM 5.8 DOWNGRADE Openfind's Mail2000 has a vulnerability that allows the HttpOnly flag to be bypassed
CVE-2024-6740 MEDIUM 6.1 DOWNGRADE Openfind's Mail2000 does not properly validate email atachments, allowing unauthenticated remote attackers to
CVE-2024-5400 HIGH 8.8 DOWNGRADE Openfind Mail2000 does not properly filter parameters of specific CGI
CVE-2024-5399 HIGH 7.2 DOWNGRADE Openfind Mail2000 does not properly filter parameters of specific API

References

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