CVE-2023-45746: Cross-site scripting vulnerability in Movable Type series allows a remote authenticated attacker to inject an

Q: How do I fix CVE-2023-45746?

movable type: upgrade to 1.59, 7.902.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-45746 being exploited?

CVE-2023-45746 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-45746 affect?

CVE-2023-45746 affects movable type. Severity is medium (CVSS 5.4). Cross-site scripting vulnerability in Movable Type series allows a remote authenticated attacker to inject an arbitrary script. Affected products/versions are as follows: Movable Type 7 r.5405 and earlier (Movable Type 7 Series), Movable Ty

Q: How urgent is CVE-2023-45746?

Priority 28/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2023-45746 is a medium-severity flaw (CVSS 5.4) 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 series allows a remote authenticated attacker to inject an arbitrary script. Affected products/versions are as follows: Movable Type 7 r.5405 and earlier (Movable Type 7 Series), Movable Type Advanced 7 r.5405 and earlier (Movable Type 7 Series), Movable Type Premium 1.58 and earlier, Movable Type Premium Advanced 1.58 and earlier, Movable Type Cloud Edition (Version 7) r.5405 and earlier, and Mo

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.4% (top 62%)
CISA exploited list	No
Weakness	CWE-79
Published	2023-10-30
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

2023-10-30 05:15 UTCPublished CVE record published
2026-06-17 06:29 UTCUpdated Record last modified

sixapart movable type UPGRADE

Affected: < 7.902.0 · < 1.59

Fixed in: 1.59, 7.902.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.59 (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.

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-2023-45746?

movable type: upgrade to 1.59, 7.902.0. Exact commands for each OS are on this page.

Is CVE-2023-45746 being exploited?

CVE-2023-45746 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-2023-45746 affect?

CVE-2023-45746 affects movable type. Severity is medium (CVSS 5.4). Cross-site scripting vulnerability in Movable Type series allows a remote authenticated attacker to inject an arbitrary script. Affected products/versions are as follows: Movable Type 7 r.5405 and earlier (Movable Type 7 Series), Movable Ty

How urgent is CVE-2023-45746?

Priority 28/100. 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-2022-45122 MEDIUM 6.1 UPGRADE Cross-site scripting vulnerability in Movable Type Movable Type 7 r.5301 and earlier (Movable Type 7 Series),
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

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