CVE-2025-9400: A flaw has been found in YiFang CMS up to 2.0.5

Q: How do I fix CVE-2025-9400?

yifang: upgrade to newer than 2.0.5. Exact commands for each OS are on this page.

Q: Is CVE-2025-9400 being exploited?

CVE-2025-9400 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-2025-9400 affect?

CVE-2025-9400 affects yifang. Severity is medium (CVSS 6.3). A flaw has been found in YiFang CMS up to 2.0.5. This affects the function mergeMultipartUpload of the file app/utils/base/plugin/P_file.php. This manipulation of the argument File causes unrestricted upload. Remote exploitation of the atta

Q: How urgent is CVE-2025-9400?

Priority 29/100. No elevated risk signals yet.

Routine

MEDIUM 6.3UPGRADE

CVE-2025-9400 is a medium-severity flaw (CVSS 6.3) affecting yifang. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A flaw has been found in YiFang CMS up to 2.0.5. This affects the function mergeMultipartUpload of the file app/utils/base/plugin/P_file.php. This manipulation of the argument File causes unrestricted upload. Remote exploitation of the attack is possible. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Why this priority

No elevated risk signals yet

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	0.3% (top 72%)
CISA exploited list	No
Weakness	CWE-284, CWE-434
Published	2025-08-25
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: wanglongcn

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

Am I affected?

Timeline

2025-08-25 01:15 UTCPublished CVE record published
2026-06-17 10:08 UTCUpdated Record last modified

wanglongcn yifang UPGRADE

Affected: <= 2.0.5

Fixed in: newer than 2.0.5

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.0.5 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade yifang

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-2025-9400?

yifang: upgrade to newer than 2.0.5. Exact commands for each OS are on this page.

Is CVE-2025-9400 being exploited?

CVE-2025-9400 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-2025-9400 affect?

CVE-2025-9400 affects yifang. Severity is medium (CVSS 6.3). A flaw has been found in YiFang CMS up to 2.0.5. This affects the function mergeMultipartUpload of the file app/utils/base/plugin/P_file.php. This manipulation of the argument File causes unrestricted upload. Remote exploitation of the atta

How urgent is CVE-2025-9400?

Priority 29/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

CVE-2025-11136 MEDIUM 4.7 UPGRADE A flaw has been found in YiFang CMS up to 2.0.2
CVE-2026-3743 LOW 3.5 DOWNGRADE A flaw has been found in YiFang CMS 2.0.5
CVE-2026-3742 LOW 3.5 DOWNGRADE A vulnerability was detected in YiFang CMS 2.0.5
CVE-2026-3741 LOW 3.5 DOWNGRADE A security vulnerability has been detected in YiFang CMS 2.0.5
CVE-2026-2934 LOW 2.4 UPGRADE A security vulnerability has been detected in YiFang CMS up to 2.0.5

References

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