CVE-2006-6257: The file manager in AlternC 0.9.5 and earlier, when warnings are enabled in PHP, allows remote attackers to ob

Q: How do I fix CVE-2006-6257?

alternc: upgrade to newer than 0.9.5. Exact commands for each OS are on this page.

Q: Is CVE-2006-6257 being exploited?

CVE-2006-6257 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2006-6257 affect?

CVE-2006-6257 affects alternc. Severity is medium (CVSS 6.8). The file manager in AlternC 0.9.5 and earlier, when warnings are enabled in PHP, allows remote attackers to obtain sensitive information via certain folder names such as ones composed of JavaScript code, which reveal the path in a warning m

Q: How urgent is CVE-2006-6257?

Priority 48/100. Public exploit reference

This month

MEDIUM 6.8UPGRADE

CVE-2006-6257 is a medium-severity flaw (CVSS 6.8) affecting alternc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The file manager in AlternC 0.9.5 and earlier, when warnings are enabled in PHP, allows remote attackers to obtain sensitive information via certain folder names such as ones composed of JavaScript code, which reveal the path in a warning message.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Published	2006-12-04
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: alternc

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

Am I affected?

Timeline

2006-12-04 11:28 UTCPublished CVE record published
2026-06-16 22:32 UTCUpdated Record last modified

alternc alternc UPGRADE

Affected: <= 0.9.5

Fixed in: newer than 0.9.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 0.9.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade alternc

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade alternc

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2006-6257?

alternc: upgrade to newer than 0.9.5. Exact commands for each OS are on this page.

Is CVE-2006-6257 being exploited?

CVE-2006-6257 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-2006-6257 affect?

CVE-2006-6257 affects alternc. Severity is medium (CVSS 6.8). The file manager in AlternC 0.9.5 and earlier, when warnings are enabled in PHP, allows remote attackers to obtain sensitive information via certain folder names such as ones composed of JavaScript code, which reveal the path in a warning m

How urgent is CVE-2006-6257?

Priority 48/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2006-6259 HIGH 10.0 UPGRADE Multiple directory traversal vulnerabilities in (a) class/functions.php and (b) class/m_bro.php in AlternC 0.9
CVE-2006-6258 HIGH 9.3 UPGRADE The phpmyadmin subsystem in AlternC 0.9.5 and earlier transmits the SQL password in cleartext in a cookie, whi
CVE-2006-6256 MEDIUM 6.8 UPGRADE Cross-site scripting (XSS) vulnerability in the file manager in admin/bro_main.php in AlternC 0.9.5 and earlie

References

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