CVE-2002-1159: Canna 3.6 and earlier does not properly validate requests, which allows remote attackers to cause a denial of

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MEDIUM 6.4DOWNGRADE

CVE-2002-1159 is a medium-severity flaw (CVSS 6.4) affecting canna. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Canna 3.6 and earlier does not properly validate requests, which allows remote attackers to cause a denial of service or information leak.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.4 (Medium)
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Published	2002-12-18
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: canna

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

Am I affected?

Timeline

2002-12-18 05:00 UTCPublished CVE record published
2026-06-16 21:58 UTCUpdated Record last modified

canna canna DOWNGRADE

Affected: 3.5b2 · 3.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.5b2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.5b2 (Debian / Ubuntu)

apt-cache madison canna sudo apt install canna=<VERSION_BEFORE_3.5b2> sudo apt-mark hold canna

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

dnf --showduplicates list canna sudo dnf downgrade canna-<VERSION_BEFORE_3.5b2> sudo dnf versionlock add canna

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-2002-1159?

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

Is CVE-2002-1159 being exploited?

CVE-2002-1159 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-2002-1159 affect?

CVE-2002-1159 affects canna. Severity is medium (CVSS 6.4). Canna 3.6 and earlier does not properly validate requests, which allows remote attackers to cause a denial of service or information leak.

How urgent is CVE-2002-1159?

Priority 42/100. No elevated risk signals yet.

Related CVEs

CVE-2022-21950 MEDIUM 5.3 UPGRADE A Improper Access Control vulnerability in the systemd service of cana in openSUSE Backports SLE-15-SP3, openS
CVE-2002-1158 HIGH 7.2 UPGRADE Buffer overflow in the irw_through function for Canna 3.5b2 and earlier allows local users to execute arbitrar

References

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