CVE-2009-5159: Invision Power Board (aka IPB or IP.Board) 2.x through 3.0.4, when Internet Explorer 5 is used, allows XSS via

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MEDIUM 6.1WATCHLISTUPGRADEDOWNGRADE

CVE-2009-5159 is a medium-severity flaw (CVSS 6.1) affecting invision power board, internet explorer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Invision Power Board (aka IPB or IP.Board) 2.x through 3.0.4, when Internet Explorer 5 is used, allows XSS via a .txt attachment.

Why this priority

Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	3.5% (top 11%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-03-13
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: invisioncommunity · microsoft

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

Am I affected?

Timeline

2020-03-13 15:15 UTCPublished CVE record published
2026-06-16 23:15 UTCUpdated Record last modified

invisioncommunity invision power board UPGRADE

Affected: >= 2.0 and <= 3.0.4

Fixed in: newer than 3.0.4

Safe to downgrade to: a release before 2.0

1. Check installed version

apt-cache policy invision-power-board || rpm -q invision-power-board || invision-power-board --version

2. UPGRADE to newer than 3.0.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade invision-power-board

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade invision-power-board

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.0 (Debian / Ubuntu)

apt-cache madison invision-power-board sudo apt install invision-power-board=<VERSION_BEFORE_2.0> sudo apt-mark hold invision-power-board

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list invision-power-board sudo dnf downgrade invision-power-board-<VERSION_BEFORE_2.0> sudo dnf versionlock add invision-power-board

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.

microsoft internet explorer DOWNGRADE

Affected: 5

Fixed in: no fixed release known

Safe to downgrade to: a release before 5

1. Check installed version

apt-cache policy internet-explorer || rpm -q internet-explorer || internet-explorer --version

2. No fixed release: DOWNGRADE to a release before 5 (Debian / Ubuntu)

apt-cache madison internet-explorer sudo apt install internet-explorer=<VERSION_BEFORE_5> sudo apt-mark hold internet-explorer

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

dnf --showduplicates list internet-explorer sudo dnf downgrade internet-explorer-<VERSION_BEFORE_5> sudo dnf versionlock add internet-explorer

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-2009-5159?

invision power board: upgrade to newer than 3.0.4; internet explorer: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2009-5159 being exploited?

CVE-2009-5159 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-2009-5159 affect?

CVE-2009-5159 affects invision power board, internet explorer. Severity is medium (CVSS 6.1). Invision Power Board (aka IPB or IP.Board) 2.x through 3.0.4, when Internet Explorer 5 is used, allows XSS via a .txt attachment.

How urgent is CVE-2009-5159?

Priority 54/100. Public exploit reference; On your watchlist

Software pages

Internet Explorer vulnerabilities

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References

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