CVE-2005-2955: config.inc.php in ATutor 1.5.1, and possibly earlier versions, uses an incomplete blacklist to check for dange

Routine

MEDIUM 4.6DOWNGRADE

CVE-2005-2955 is a medium-severity flaw (CVSS 4.6) affecting atutor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

config.inc.php in ATutor 1.5.1, and possibly earlier versions, uses an incomplete blacklist to check for dangerous file extensions, which allows authenticated administrators or educators to execute arbitrary code by uploading files with other executable extensions such as .inc, .php4, or others.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.6 (Medium)
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Published	2005-09-16
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: adaptive technology resource centre

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

Am I affected?

Timeline

2005-09-16 22:03 UTCPublished CVE record published
2026-06-16 22:15 UTCUpdated Record last modified

adaptive technology resource centre atutor DOWNGRADE

Affected: 1.5.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.5.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.5.1 (Debian / Ubuntu)

apt-cache madison atutor sudo apt install atutor=<VERSION_BEFORE_1.5.1> sudo apt-mark hold atutor

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

dnf --showduplicates list atutor sudo dnf downgrade atutor-<VERSION_BEFORE_1.5.1> sudo dnf versionlock add atutor

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-2005-2955?

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

Is CVE-2005-2955 being exploited?

CVE-2005-2955 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-2005-2955 affect?

CVE-2005-2955 affects atutor. Severity is medium (CVSS 4.6). config.inc.php in ATutor 1.5.1, and possibly earlier versions, uses an incomplete blacklist to check for dangerous file extensions, which allows authenticated administrators or educators to execute arbitrary code by uploading files with oth

How urgent is CVE-2005-2955?

Priority 35/100. Public exploit reference

Software pages

PHP vulnerabilities

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References

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