CVE-2025-12346: A vulnerability was detected in MaxSite CMS up to 109

Q: How do I fix CVE-2025-12346?

maxsite cms: upgrade to newer than 109. Exact commands for each OS are on this page.

Q: Is CVE-2025-12346 being exploited?

CVE-2025-12346 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-2025-12346 affect?

CVE-2025-12346 affects maxsite cms. Severity is medium (CVSS 6.3). A vulnerability was detected in MaxSite CMS up to 109. This vulnerability affects unknown code of the file application/maxsite/admin/plugins/auto_post/uploads-require-maxsite.php of the component HTTP Header Handler. Performing manipulation

Q: How urgent is CVE-2025-12346?

Priority 35/100. Public exploit reference

Routine

MEDIUM 6.3UPGRADE

CVE-2025-12346 is a medium-severity flaw (CVSS 6.3) affecting maxsite cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was detected in MaxSite CMS up to 109. This vulnerability affects unknown code of the file application/maxsite/admin/plugins/auto_post/uploads-require-maxsite.php of the component HTTP Header Handler. Performing manipulation of the argument X-Requested-FileName/X-Requested-FileUpDir results in unrestricted upload. Remote exploitation of the attack is possible. The exploit is now public and may be used. The vendor was contacted ear

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 66%)
CISA exploited list	No
Weakness	CWE-284, CWE-434
Published	2025-10-28
Last modified	2026-10-08

Publisher (CNA): VulDB · Vendor: max-3000

Last updated 2026-10-08 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-10-28 03:15 UTCPublished CVE record published
2026-10-08 11:10 UTCUpdated Record last modified

max-3000 maxsite cms UPGRADE

Affected: <= 109

Fixed in: newer than 109

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy maxsite-cms || rpm -q maxsite-cms || maxsite-cms --version

2. UPGRADE to newer than 109 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade maxsite-cms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade maxsite-cms

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-2025-12346?

maxsite cms: upgrade to newer than 109. Exact commands for each OS are on this page.

Is CVE-2025-12346 being exploited?

CVE-2025-12346 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-2025-12346 affect?

CVE-2025-12346 affects maxsite cms. Severity is medium (CVSS 6.3). A vulnerability was detected in MaxSite CMS up to 109. This vulnerability affects unknown code of the file application/maxsite/admin/plugins/auto_post/uploads-require-maxsite.php of the component HTTP Header Handler. Performing manipulation

How urgent is CVE-2025-12346?

Priority 35/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-12347 MEDIUM 6.3 UPGRADE A flaw has been found in MaxSite CMS up to 109

References

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