CVE-2011-3816: WEBinsta mailing list manager 1.3e allows remote attackers to obtain sensitive information via a direct reques

Routine

MEDIUM 5.0DOWNGRADE

CVE-2011-3816 is a medium-severity flaw (CVSS 5.0) affecting mailing list manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

WEBinsta mailing list manager 1.3e allows remote attackers to obtain sensitive information via a direct request to a .php file, which reveals the installation path in an error message, as demonstrated by install/install3.php and certain other files.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-200
Published	2011-09-24
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: webinsta

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

Am I affected?

Timeline

2011-09-24 00:55 UTCPublished CVE record published
2026-06-16 23:33 UTCUpdated Record last modified

webinsta mailing list manager DOWNGRADE

Affected: 1.3e

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3e

1. Check installed version

apt-cache policy mailing-list-manager || rpm -q mailing-list-manager || mailing-list-manager --version

2. No fixed release: DOWNGRADE to a release before 1.3e (Debian / Ubuntu)

apt-cache madison mailing-list-manager sudo apt install mailing-list-manager=<VERSION_BEFORE_1.3e> sudo apt-mark hold mailing-list-manager

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

dnf --showduplicates list mailing-list-manager sudo dnf downgrade mailing-list-manager-<VERSION_BEFORE_1.3e> sudo dnf versionlock add mailing-list-manager

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-2011-3816?

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

Is CVE-2011-3816 being exploited?

CVE-2011-3816 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-2011-3816 affect?

CVE-2011-3816 affects mailing list manager. Severity is medium (CVSS 5.0). WEBinsta mailing list manager 1.3e allows remote attackers to obtain sensitive information via a direct request to a .php file, which reveals the installation path in an error message, as demonstrated by install/install3.php and certain oth

How urgent is CVE-2011-3816?

Priority 35/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

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CVE-2008-5978 HIGH 7.5 DOWNGRADE Multiple SQL injection vulnerabilities in Ocean12 Mailing List Manager Gold allow remote attackers to execute

References

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