CVE-1999-1083: Directory traversal vulnerability in Jana proxy web server 1.45 allows remote attackers to ready arbitrary fil

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MEDIUM 5.0DOWNGRADE

CVE-1999-1083 is a medium-severity flaw (CVSS 5.0) affecting jana web server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in Jana proxy web server 1.45 allows remote attackers to ready arbitrary files via a .. (dot dot) attack.

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	3.0% (top 13%)
CISA exploited list	No
Published	1999-10-08
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: t. hauck

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

Am I affected?

Timeline

1999-10-08 04:00 UTCPublished CVE record published
2026-06-16 21:49 UTCUpdated Record last modified

t. hauck jana web server DOWNGRADE

Affected: 1.0 · 1.45 · 1.46

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy jana-web-server || rpm -q jana-web-server || jana-web-server --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison jana-web-server sudo apt install jana-web-server=<VERSION_BEFORE_1.0> sudo apt-mark hold jana-web-server

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

dnf --showduplicates list jana-web-server sudo dnf downgrade jana-web-server-<VERSION_BEFORE_1.0> sudo dnf versionlock add jana-web-server

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: T. Hauck Jana Server 1.0/1.45/1.46 - Directory Traversal

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-1999-1083?

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

Is CVE-1999-1083 being exploited?

CVE-1999-1083 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-1999-1083 affect?

CVE-1999-1083 affects jana web server. Severity is medium (CVSS 5.0). Directory traversal vulnerability in Jana proxy web server 1.45 allows remote attackers to ready arbitrary files via a .. (dot dot) attack.

How urgent is CVE-1999-1083?

Priority 44/100. Public exploit reference

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References

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