CVE-2007-3423: cgi-bin/cgi-lib/instantmessage.pl in web-app.org WebAPP before 0.9.9.7 uses the From field of an instant messa

Q: How do I fix CVE-2007-3423?

webapp: upgrade to newer than 0.9.9.6. Exact commands for each OS are on this page.

Q: Is CVE-2007-3423 being exploited?

CVE-2007-3423 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-2007-3423 affect?

CVE-2007-3423 affects webapp. Severity is high (CVSS 7.5). cgi-bin/cgi-lib/instantmessage.pl in web-app.org WebAPP before 0.9.9.7 uses the From field of an instant message as the beginning of the .dat file name when the (1) imview2 or (2) imview3 function reads (a) an internal IM, or a message from

This month

HIGH 7.5UPGRADE

CVE-2007-3423 is a high-severity flaw (CVSS 7.5) affecting webapp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

cgi-bin/cgi-lib/instantmessage.pl in web-app.org WebAPP before 0.9.9.7 uses the From field of an instant message as the beginning of the .dat file name when the (1) imview2 or (2) imview3 function reads (a) an internal IM, or a message from a (b) guest or (c) removed member, which has unknown impact and remote attack vectors.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Published	2007-06-26
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: web-app.org

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

Am I affected?

Timeline

2007-06-26 23:30 UTCPublished CVE record published
2026-06-16 22:42 UTCUpdated Record last modified

web-app.org webapp UPGRADE

Affected: <= 0.9.9.6

Fixed in: newer than 0.9.9.6

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 0.9.9.6 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade webapp

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-2007-3423?

webapp: upgrade to newer than 0.9.9.6. Exact commands for each OS are on this page.

Is CVE-2007-3423 being exploited?

CVE-2007-3423 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-2007-3423 affect?

CVE-2007-3423 affects webapp. Severity is high (CVSS 7.5). cgi-bin/cgi-lib/instantmessage.pl in web-app.org WebAPP before 0.9.9.7 uses the From field of an instant message as the beginning of the .dat file name when the (1) imview2 or (2) imview3 function reads (a) an internal IM, or a message from

How urgent is CVE-2007-3423?

Priority 43/100. High severity

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References

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