CVE-2025-50481: A cross-site scripting (XSS) vulnerability in the component /blog/blogpost/add of Mezzanine CMS v6.1.0 allows

Routine

MEDIUM 4.8DOWNGRADE

CVE-2025-50481 is a medium-severity flaw (CVSS 4.8) affecting mezzanine. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A cross-site scripting (XSS) vulnerability in the component /blog/blogpost/add of Mezzanine CMS v6.1.0 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into a blog post.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-07-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: jupo

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

Am I affected?

Timeline

2025-07-23 16:15 UTCPublished CVE record published
2026-06-17 09:35 UTCUpdated Record last modified

jupo mezzanine DOWNGRADE

Affected: 6.1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 6.1.0 (Debian / Ubuntu)

apt-cache madison mezzanine sudo apt install mezzanine=<VERSION_BEFORE_6.1.0> sudo apt-mark hold mezzanine

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

dnf --showduplicates list mezzanine sudo dnf downgrade mezzanine-<VERSION_BEFORE_6.1.0> sudo dnf versionlock add mezzanine

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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Mezzanine CMS 6.1.0 - Stored Cross Site Scripting (XSS)

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-2025-50481?

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

Is CVE-2025-50481 being exploited?

CVE-2025-50481 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-2025-50481 affect?

CVE-2025-50481 affects mezzanine. Severity is medium (CVSS 4.8). A cross-site scripting (XSS) vulnerability in the component /blog/blogpost/add of Mezzanine CMS v6.1.0 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into a blog post.

How urgent is CVE-2025-50481?

Priority 35/100. Public exploit reference

Related CVEs

CVE-2025-6050 MEDIUM 4.8 UPGRADE Mezzanine CMS, in versions prior to 6.1.1, contains a Stored Cross-Site Scripting (XSS) vulnerability in the a

References

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