CVE-2007-3647: The isloggedin function in Php/login.inc.php in phpTrafficA 1.4.3 and earlier allows remote attackers to bypas

This week

HIGH 10.0DOWNGRADE

CVE-2007-3647 is a high-severity flaw (CVSS 10.0) affecting phptraffica. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The isloggedin function in Php/login.inc.php in phpTrafficA 1.4.3 and earlier allows remote attackers to bypass authentication and obtain administrative access by setting the username cookie to "traffic." NOTE: some of these details are obtained from third party information.

Why this priority

Critical severity
Public exploit reference

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	3.3% (top 11%)
CISA exploited list	No
Published	2007-07-10
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: zoneo-soft

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

Am I affected?

Timeline

2007-07-10 17:30 UTCPublished CVE record published
2026-06-16 22:42 UTCUpdated Record last modified

zoneo-soft phptraffica DOWNGRADE

Affected: 1.4 · 1.4.2 · 1.4.3

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.4 (Debian / Ubuntu)

apt-cache madison phptraffica sudo apt install phptraffica=<VERSION_BEFORE_1.4> sudo apt-mark hold phptraffica

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

dnf --showduplicates list phptraffica sudo dnf downgrade phptraffica-<VERSION_BEFORE_1.4> sudo dnf versionlock add phptraffica

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-2007-3647?

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

Is CVE-2007-3647 being exploited?

CVE-2007-3647 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-2007-3647 affect?

CVE-2007-3647 affects phptraffica. Severity is high (CVSS 10.0). The isloggedin function in Php/login.inc.php in phpTrafficA 1.4.3 and earlier allows remote attackers to bypass authentication and obtain administrative access by setting the username cookie to "traffic." NOTE: some of these details are obt

How urgent is CVE-2007-3647?

Priority 62/100. Critical severity; Public exploit reference

Software pages

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References

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