CVE-2009-0571: admin.php in Ninja Designs Mailist 3.0 stores backup copies of maillist.php under the web root with insufficie

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MEDIUM 5.0DOWNGRADE

CVE-2009-0571 is a medium-severity flaw (CVSS 5.0) affecting mailist. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

admin.php in Ninja Designs Mailist 3.0 stores backup copies of maillist.php under the web root with insufficient access control, which allows remote attackers to obtain sensitive information via a direct request to the backup directory.

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	2.3% (top 16%)
CISA exploited list	No
Weakness	CWE-264
Published	2009-02-13
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: ninjadesigns

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

Am I affected?

Timeline

2009-02-13 17:30 UTCPublished CVE record published
2026-06-16 23:05 UTCUpdated Record last modified

ninjadesigns mailist DOWNGRADE

Affected: 3.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)

apt-cache madison mailist sudo apt install mailist=<VERSION_BEFORE_3.0> sudo apt-mark hold mailist

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

dnf --showduplicates list mailist sudo dnf downgrade mailist-<VERSION_BEFORE_3.0> sudo dnf versionlock add mailist

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: Mailist 3.0 - Insecure Backup / Local File Inclusion

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-2009-0571?

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

Is CVE-2009-0571 being exploited?

CVE-2009-0571 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-2009-0571 affect?

CVE-2009-0571 affects mailist. Severity is medium (CVSS 5.0). admin.php in Ninja Designs Mailist 3.0 stores backup copies of maillist.php under the web root with insufficient access control, which allows remote attackers to obtain sensitive information via a direct request to the backup directory.

How urgent is CVE-2009-0571?

Priority 43/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2009-0570 MEDIUM 5.1 DOWNGRADE Directory traversal vulnerability in send.php in Ninja Designs Mailist 3.0, when register_globals is enabled a

References

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