CVE-2004-1548: Directory traversal vulnerability in the file server in ActivePost Standard 3.1 allows remote authenticated us

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MEDIUM 5.0DOWNGRADE

CVE-2004-1548 is a medium-severity flaw (CVSS 5.0) affecting activepost standard. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in the file server in ActivePost Standard 3.1 allows remote authenticated users to upload arbitrary files via a .. (dot dot) in the filename.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.8% (top 21%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: onnuri infotek

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

Am I affected?

Timeline

2004-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:07 UTCUpdated Record last modified

onnuri infotek activepost standard DOWNGRADE

Affected: 3.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.1

1. Check installed version

apt-cache policy activepost-standard || rpm -q activepost-standard || activepost-standard --version

2. No fixed release: DOWNGRADE to a release before 3.1 (Debian / Ubuntu)

apt-cache madison activepost-standard sudo apt install activepost-standard=<VERSION_BEFORE_3.1> sudo apt-mark hold activepost-standard

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

dnf --showduplicates list activepost-standard sudo dnf downgrade activepost-standard-<VERSION_BEFORE_3.1> sudo dnf versionlock add activepost-standard

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.

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-2004-1548?

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

Is CVE-2004-1548 being exploited?

CVE-2004-1548 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-2004-1548 affect?

CVE-2004-1548 affects activepost standard. Severity is medium (CVSS 5.0). Directory traversal vulnerability in the file server in ActivePost Standard 3.1 allows remote authenticated users to upload arbitrary files via a .. (dot dot) in the filename.

How urgent is CVE-2004-1548?

Priority 42/100. Public exploit reference

Related CVEs

CVE-2004-2616 MEDIUM 4.0 UPGRADE The file server in ActivePost Standard 3.1 and earlier allows remote authenticated users to obtain sensitive i
CVE-2004-1549 MEDIUM 5.0 DOWNGRADE The conference menu in ActivePost Standard 3.1 sends passwords of password-protected rooms in cleartext, which
CVE-2004-1547 MEDIUM 5.0 DOWNGRADE The file server in ActivePost Standard 3.1 and earlier allows remote authenticated users to cause a denial of

References

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