CVE-2005-4529: The Chatspot 2.0.0a7 module for phpBB might allow remote attackers to impersonate other users via unknown vect

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HIGH 7.5DOWNGRADE

CVE-2005-4529 is a high-severity flaw (CVSS 7.5) affecting chatspot. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Chatspot 2.0.0a7 module for phpBB might allow remote attackers to impersonate other users via unknown vectors.

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	1.6% (top 25%)
CISA exploited list	No
Published	2005-12-28
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: chatspot

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

Am I affected?

Timeline

2005-12-28 01:03 UTCPublished CVE record published
2026-06-16 22:18 UTCUpdated Record last modified

chatspot chatspot DOWNGRADE

Affected: 2.0.0a7

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.0a7

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.0.0a7 (Debian / Ubuntu)

apt-cache madison chatspot sudo apt install chatspot=<VERSION_BEFORE_2.0.0a7> sudo apt-mark hold chatspot

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

dnf --showduplicates list chatspot sudo dnf downgrade chatspot-<VERSION_BEFORE_2.0.0a7> sudo dnf versionlock add chatspot

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-2005-4529?

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

Is CVE-2005-4529 being exploited?

CVE-2005-4529 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-2005-4529 affect?

CVE-2005-4529 affects chatspot. Severity is high (CVSS 7.5). The Chatspot 2.0.0a7 module for phpBB might allow remote attackers to impersonate other users via unknown vectors.

How urgent is CVE-2005-4529?

Priority 45/100. High severity

Related CVEs

CVE-2005-4528 HIGH 7.5 DOWNGRADE SQL injection vulnerability in the Chatspot 2.0.0a7 module for phpBB allows remote attackers to execute arbitr

References

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