CVE-2025-51487: A Stored Cross-Site Scripting (XSS) vulnerability exists in MoonShine version < 3.12.5, allowing to execute ar

Q: How do I fix CVE-2025-51487?

moonshine: upgrade to 3.12.5. Exact commands for each OS are on this page.

Q: Is CVE-2025-51487 being exploited?

CVE-2025-51487 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-2025-51487 affect?

CVE-2025-51487 affects moonshine. Severity is medium (CVSS 4.5). A Stored Cross-Site Scripting (XSS) vulnerability exists in MoonShine version < 3.12.5, allowing to execute arbitrary JavaScript by using "javascript:" payload, instead of the expected HTTPS protocol, in the CutCode Link parameter when crea

Q: How urgent is CVE-2025-51487?

Priority 30/100. Public exploit reference

Routine

MEDIUM 4.5UPGRADE

CVE-2025-51487 is a medium-severity flaw (CVSS 4.5) affecting moonshine. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A Stored Cross-Site Scripting (XSS) vulnerability exists in MoonShine version < 3.12.5, allowing to execute arbitrary JavaScript by using "javascript:" payload, instead of the expected HTTPS protocol, in the CutCode Link parameter when creating/updating a new Article.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-08-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: moonshine

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

Am I affected?

Timeline

2025-08-19 15:15 UTCPublished CVE record published
2026-06-17 09:35 UTCUpdated Record last modified

moonshine moonshine UPGRADE

Affected: < 3.12.5

Fixed in: 3.12.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 3.12.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade moonshine

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade moonshine

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-2025-51487?

moonshine: upgrade to 3.12.5. Exact commands for each OS are on this page.

Is CVE-2025-51487 being exploited?

CVE-2025-51487 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-2025-51487 affect?

CVE-2025-51487 affects moonshine. Severity is medium (CVSS 4.5). A Stored Cross-Site Scripting (XSS) vulnerability exists in MoonShine version < 3.12.5, allowing to execute arbitrary JavaScript by using "javascript:" payload, instead of the expected HTTPS protocol, in the CutCode Link parameter when crea

How urgent is CVE-2025-51487?

Priority 30/100. Public exploit reference

Related CVEs

CVE-2025-51510 MEDIUM 4.9 UPGRADE MoonShine was discovered to contain a SQL injection vulnerability under the Blog -> Categories page when using
CVE-2025-51489 MEDIUM 5.4 UPGRADE A Stored Cross-Site Scripting (XSS) vulnerability exists in MoonShine version < 3.12.5, allowing remote attack
CVE-2025-51488 MEDIUM 4.9 UPGRADE A Stored Cross-Site Scripting (XSS) vulnerability exists in MoonShine version < 3.12.4, allowing remote attack

References

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