CVE-2022-45122: Cross-site scripting vulnerability in Movable Type Movable Type 7 r.5301 and earlier (Movable Type 7 Series),

Routine

MEDIUM 6.1UPGRADE

CVE-2022-45122 is a medium-severity flaw (CVSS 6.1) affecting movable type. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting vulnerability in Movable Type Movable Type 7 r.5301 and earlier (Movable Type 7 Series), Movable Type Advanced 7 r.5301 and earlier (Movable Type Advanced 7 Series), Movable Type 6.8.7 and earlier (Movable Type 6 Series), Movable Type Advanced 6.8.7 and earlier (Movable Type Advanced 6 Series), Movable Type Premium 1.53 and earlier, and Movable Type Premium Advanced 1.53 and earlier allows a remote unauthenticated attacker to

Why this priority

No elevated risk signals yet

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	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-79
Published	2022-12-07
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: sixapart

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

Am I affected?

Timeline

2022-12-07 04:15 UTCPublished CVE record published
2026-06-17 05:09 UTCUpdated Record last modified

sixapart movable type UPGRADE

Affected: <= 1.53 · >= 6.0 and < 6.8.7 · >= 7.0 and < 7.9.6

Fixed in: 6.8.7, 7.9.6

Safe to downgrade to: a release before 6.0

1. Check installed version

apt-cache policy movable-type || rpm -q movable-type || movable-type --version

2. UPGRADE to 6.8.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade movable-type

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade movable-type

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 6.0 (Debian / Ubuntu)

apt-cache madison movable-type sudo apt install movable-type=<VERSION_BEFORE_6.0> sudo apt-mark hold movable-type

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

dnf --showduplicates list movable-type sudo dnf downgrade movable-type-<VERSION_BEFORE_6.0> sudo dnf versionlock add movable-type

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-2022-45122?

movable type: upgrade to 6.8.7, 7.9.6. Exact commands for each OS are on this page.

Is CVE-2022-45122 being exploited?

CVE-2022-45122 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-2022-45122 affect?

CVE-2022-45122 affects movable type. Severity is medium (CVSS 6.1). Cross-site scripting vulnerability in Movable Type Movable Type 7 r.5301 and earlier (Movable Type 7 Series), Movable Type Advanced 7 r.5301 and earlier (Movable Type Advanced 7 Series), Movable Type 6.8.7 and earlier (Movable Type 6 Series

How urgent is CVE-2022-45122?

Priority 33/100. No elevated risk signals yet.

Related CVEs

CVE-2026-25776 CRITICAL 9.8 UPGRADE Movable Type provided by Six Apart Ltd
CVE-2026-33088 CRITICAL 9.8 UPGRADE Movable Type provided by Six Apart Ltd
CVE-2023-45746 MEDIUM 5.4 UPGRADE Cross-site scripting vulnerability in Movable Type series allows a remote authenticated attacker to inject an
CVE-2022-45113 MEDIUM 6.5 UPGRADE Improper validation of syntactic correctness of input vulnerability exist in Movable Type series
CVE-2022-43660 HIGH 7.2 UPGRADE Improper neutralization of Server-Side Includes (SSW) within a web page in Movable Type series allows a remote

References

← Back to latest CVEs