CVE-2006-0046: squid_redirect script in adzapper before 2006-01-29 allows remote attackers to cause a denial of service (CPU

This month

HIGH 7.8WATCHLISTDOWNGRADE

CVE-2006-0046 is a high-severity flaw (CVSS 7.8) affecting adzapper. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

squid_redirect script in adzapper before 2006-01-29 allows remote attackers to cause a denial of service (CPU consumption) via a URL with a large number of trailing / (forward slashes), which might produce inefficient regular expressions.

Why this priority

High severity
On your watchlist

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

Risk facts

CVSS score	7.8 (High)
EPSS exploit chance	2.7% (top 14%)
CISA exploited list	No
Published	2006-02-13
Last modified	2026-06-16

Publisher (CNA): Debian GNU/Linux · Vendor: cameron simpson

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

Am I affected?

Timeline

2006-02-13 11:06 UTCPublished CVE record published
2026-06-16 22:19 UTCUpdated Record last modified

cameron simpson adzapper DOWNGRADE

Affected: 2006-01-01 · 2006-01-05 · 2006-01-07 · 2006-01-14 · 2006-01-15 · 2006-01-23 · 2006-01-24 · 2006-01-25

Fixed in: no fixed release known

Safe to downgrade to: a release before 2006-01-01

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2006-01-01 (Debian / Ubuntu)

apt-cache madison adzapper sudo apt install adzapper=<VERSION_BEFORE_2006-01-01> sudo apt-mark hold adzapper

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

dnf --showduplicates list adzapper sudo dnf downgrade adzapper-<VERSION_BEFORE_2006-01-01> sudo dnf versionlock add adzapper

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-2006-0046?

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

Is CVE-2006-0046 being exploited?

CVE-2006-0046 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-2006-0046 affect?

CVE-2006-0046 affects adzapper. Severity is high (CVSS 7.8). squid_redirect script in adzapper before 2006-01-29 allows remote attackers to cause a denial of service (CPU consumption) via a URL with a large number of trailing / (forward slashes), which might produce inefficient regular expressions.

How urgent is CVE-2006-0046?

Priority 54/100. High severity; On your watchlist

Software pages

Squid vulnerabilities

References

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