CVE-2007-1830: Unspecified vulnerability in the Username Hijacking Patch 20070312 for web-app.org WebAPP 0.9.9.6 allows remot

Routine

MEDIUM 4.3DOWNGRADE

CVE-2007-1830 is a medium-severity flaw (CVSS 4.3) affecting webapp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unspecified vulnerability in the Username Hijacking Patch 20070312 for web-app.org WebAPP 0.9.9.6 allows remote attackers to obtain administrative access via unknown vectors, related to "something overlooked in the original that was still overlooked in the patch", and possibly related to copying files to the user-lib and the "XSS and cookies exploit."

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.1% (top 35%)
CISA exploited list	No
Published	2007-04-03
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

2007-04-03 00:19 UTCPublished CVE record published
2026-06-16 22:38 UTCUpdated Record last modified

web-app.org webapp DOWNGRADE

Affected: 0.9.9.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.9.9.6

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.9.9.6 (Debian / Ubuntu)

apt-cache madison webapp sudo apt install webapp=<VERSION_BEFORE_0.9.9.6> sudo apt-mark hold webapp

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

dnf --showduplicates list webapp sudo dnf downgrade webapp-<VERSION_BEFORE_0.9.9.6> sudo dnf versionlock add webapp

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-2007-1830?

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

Is CVE-2007-1830 being exploited?

CVE-2007-1830 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-2007-1830 affect?

CVE-2007-1830 affects webapp. Severity is medium (CVSS 4.3). Unspecified vulnerability in the Username Hijacking Patch 20070312 for web-app.org WebAPP 0.9.9.6 allows remote attackers to obtain administrative access via unknown vectors, related to "something overlooked in the original that was still o

How urgent is CVE-2007-1830?

Priority 31/100. No elevated risk signals yet.

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References

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