CVE-2016-7146: MoinMoin 1.9.8 allows remote attackers to conduct "JavaScript injection" attacks by using the "page creation o

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MEDIUM 6.1DOWNGRADE

CVE-2016-7146 is a medium-severity flaw (CVSS 6.1) affecting moinmoin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MoinMoin 1.9.8 allows remote attackers to conduct "JavaScript injection" attacks by using the "page creation or crafted URL" approach, related to a "Cross Site Scripting (XSS)" issue affecting the action=fckdialog&dialog=attachment (via page name) component.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.2% (top 32%)
CISA exploited list	No
Weakness	CWE-79
Published	2016-11-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: moinmo

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2016-11-10 17:59 UTCPublished CVE record published
2026-06-17 00:52 UTCUpdated Record last modified

moinmo moinmoin DOWNGRADE

Affected: 1.9.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.9.8

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.9.8 (Debian / Ubuntu)

apt-cache madison moinmoin sudo apt install moinmoin=<VERSION_BEFORE_1.9.8> sudo apt-mark hold moinmoin

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

dnf --showduplicates list moinmoin sudo dnf downgrade moinmoin-<VERSION_BEFORE_1.9.8> sudo dnf versionlock add moinmoin

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-2016-7146?

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

Is CVE-2016-7146 being exploited?

CVE-2016-7146 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-2016-7146 affect?

CVE-2016-7146 affects moinmoin. Severity is medium (CVSS 6.1). MoinMoin 1.9.8 allows remote attackers to conduct "JavaScript injection" attacks by using the "page creation or crafted URL" approach, related to a "Cross Site Scripting (XSS)" issue affecting the action=fckdialog&dialog=attachment (via pag

How urgent is CVE-2016-7146?

Priority 43/100. Public exploit reference

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CVE-2017-5934 MEDIUM 6.1 UPGRADE MITIGATE Cross-site scripting (XSS) vulnerability in the link dialogue in GUI editor in MoinMoin before 1.9.10 allows r
CVE-2016-9119 MEDIUM 6.1 UPGRADE MITIGATE Cross-site scripting (XSS) vulnerability in the link dialogue in GUI editor in MoinMoin before 1.9.8 allows re
CVE-2016-7148 MEDIUM 6.1 DOWNGRADE MoinMoin 1.9.8 allows remote attackers to conduct "JavaScript injection" attacks by using the "page creation"

References

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