CVE-2006-1691: SQL injection vulnerability in MWNewsletter 1.0.0b allows remote attackers to execute arbitrary SQL commands v

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HIGH 7.5DOWNGRADE

CVE-2006-1691 is a high-severity flaw (CVSS 7.5) affecting mwnewsletter. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SQL injection vulnerability in MWNewsletter 1.0.0b allows remote attackers to execute arbitrary SQL commands via the user_name parameter to unsubscribe.php.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Published	2006-04-11
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: manic web

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

Am I affected?

Timeline

2006-04-11 10:02 UTCPublished CVE record published
2026-06-16 22:23 UTCUpdated Record last modified

manic web mwnewsletter DOWNGRADE

Affected: 1.0.0b

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.0b

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0.0b (Debian / Ubuntu)

apt-cache madison mwnewsletter sudo apt install mwnewsletter=<VERSION_BEFORE_1.0.0b> sudo apt-mark hold mwnewsletter

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

dnf --showduplicates list mwnewsletter sudo dnf downgrade mwnewsletter-<VERSION_BEFORE_1.0.0b> sudo dnf versionlock add mwnewsletter

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-2006-1691?

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

Is CVE-2006-1691 being exploited?

CVE-2006-1691 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-2006-1691 affect?

CVE-2006-1691 affects mwnewsletter. Severity is high (CVSS 7.5). SQL injection vulnerability in MWNewsletter 1.0.0b allows remote attackers to execute arbitrary SQL commands via the user_name parameter to unsubscribe.php.

How urgent is CVE-2006-1691?

Priority 45/100. High severity

Software pages

PHP vulnerabilities

Related CVEs

CVE-2006-1692 HIGH 7.5 DOWNGRADE Multiple SQL injection vulnerabilities in MWNewsletter 1.0.0b allow remote attackers to execute arbitrary SQL
CVE-2006-1690 MEDIUM 6.8 UPGRADE Cross-site scripting (XSS) vulnerability in subscribe.php in MWNewsletter 1.0.0b allows remote attackers to in

References

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