CVE-2006-1239: Cross-site scripting (XSS) vulnerability in issue/createissue.aspx in Gemini 2.0 allows remote attackers to in

Routine

MEDIUM 4.3DOWNGRADE

CVE-2006-1239 is a medium-severity flaw (CVSS 4.3) affecting gemini. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in issue/createissue.aspx in Gemini 2.0 allows remote attackers to inject arbitrary web script or HTML via the rtcDescription$RadEditor1 field. 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	4.3 (Medium)
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Published	2006-03-15
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: countersoft

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

Am I affected?

Timeline

2006-03-15 16:06 UTCPublished CVE record published
2026-06-16 22:22 UTCUpdated Record last modified

countersoft gemini DOWNGRADE

Affected: 2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.0 (Debian / Ubuntu)

apt-cache madison gemini sudo apt install gemini=<VERSION_BEFORE_2.0> sudo apt-mark hold gemini

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

dnf --showduplicates list gemini sudo dnf downgrade gemini-<VERSION_BEFORE_2.0> sudo dnf versionlock add gemini

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-2006-1239?

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

Is CVE-2006-1239 being exploited?

CVE-2006-1239 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-2006-1239 affect?

CVE-2006-1239 affects gemini. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in issue/createissue.aspx in Gemini 2.0 allows remote attackers to inject arbitrary web script or HTML via the rtcDescription$RadEditor1 field. NOTE: the provenance of this information is unknown; t

How urgent is CVE-2006-1239?

Priority 32/100. No elevated risk signals yet.

References

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