CVE-2007-0834: Cross-site scripting (XSS) vulnerability in FlashChat 4.7.8 allows remote attackers to inject arbitrary web sc

This month

MEDIUM 6.8DOWNGRADE

CVE-2007-0834 is a medium-severity flaw (CVSS 6.8) affecting flashchat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in FlashChat 4.7.8 allows remote attackers to inject arbitrary web script or HTML via the user name field when the user joins a chat room, a different vulnerability than CVE-2007-0807. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Published	2007-02-07
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: darrens 5-dollar script archive

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

Am I affected?

Timeline

2007-02-07 23:28 UTCPublished CVE record published
2026-06-16 22:36 UTCUpdated Record last modified

darrens 5-dollar script archive flashchat DOWNGRADE

Affected: 4.7.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.7.8

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.7.8 (Debian / Ubuntu)

apt-cache madison flashchat sudo apt install flashchat=<VERSION_BEFORE_4.7.8> sudo apt-mark hold flashchat

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

dnf --showduplicates list flashchat sudo dnf downgrade flashchat-<VERSION_BEFORE_4.7.8> sudo dnf versionlock add flashchat

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-2007-0834?

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

Is CVE-2007-0834 being exploited?

CVE-2007-0834 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-2007-0834 affect?

CVE-2007-0834 affects flashchat. Severity is medium (CVSS 6.8). Cross-site scripting (XSS) vulnerability in FlashChat 4.7.8 allows remote attackers to inject arbitrary web script or HTML via the user name field when the user joins a chat room, a different vulnerability than CVE-2007-0807. NOTE: the pro

How urgent is CVE-2007-0834?

Priority 41/100. No elevated risk signals yet.

Related CVEs

CVE-2008-6799 HIGH 7.5 DOWNGRADE connection.php in FlashChat 5.0.8 allows remote attackers to bypass the role filter mechanism and gain adminis
CVE-2007-0807 MEDIUM 6.8 DOWNGRADE Cross-site scripting (XSS) vulnerability in info.php in flashChat 4.7.8 allows remote attackers to inject arbi
CVE-2006-4583 HIGH 7.5 UPGRADE Multiple PHP remote file inclusion vulnerabilities in FlashChat before 4.6.2 allow remote attackers to execute

References

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