CVE-2025-4531: A vulnerability was found in Seeyon Zhiyuan OA Web Application System 8.1 SP2

Routine

MEDIUM 6.3DOWNGRADE

CVE-2025-4531 is a medium-severity flaw (CVSS 6.3) affecting oa web application system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in Seeyon Zhiyuan OA Web Application System 8.1 SP2. It has been rated as critical. Affected by this issue is the function postData of the file ROOT\WEB-INF\classes\com\ours\www\ehr\salary\service\data\EhrSalaryPayrollServiceImpl.class of the component Beetl Template Handler. The manipulation of the argument payrollId leads to code injection. The attack may be launched remotely. The exploit has been disclosed to the publ

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-74, CWE-94
Published	2025-05-11
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: seeyon

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

Am I affected?

Timeline

2025-05-11 06:15 UTCPublished CVE record published
2026-06-17 09:33 UTCUpdated Record last modified

seeyon oa web application system DOWNGRADE

Affected: 8.1 sp2

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.1

1. Check installed version

apt-cache policy oa-web-application-system || rpm -q oa-web-application-system || oa-web-application-system --version

2. No fixed release: DOWNGRADE to a release before 8.1 (Debian / Ubuntu)

apt-cache madison oa-web-application-system sudo apt install oa-web-application-system=<VERSION_BEFORE_8.1> sudo apt-mark hold oa-web-application-system

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

dnf --showduplicates list oa-web-application-system sudo dnf downgrade oa-web-application-system-<VERSION_BEFORE_8.1> sudo dnf versionlock add oa-web-application-system

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.

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-2025-4531?

oa web application system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-4531 being exploited?

CVE-2025-4531 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-2025-4531 affect?

CVE-2025-4531 affects oa web application system. Severity is medium (CVSS 6.3). A vulnerability was found in Seeyon Zhiyuan OA Web Application System 8.1 SP2. It has been rated as critical. Affected by this issue is the function postData of the file ROOT\WEB-INF\classes\com\ours\www\ehr\salary\service\data\EhrSalaryPay

How urgent is CVE-2025-4531?

Priority 33/100. No elevated risk signals yet.

Related CVEs

CVE-2025-4529 MEDIUM 4.3 DOWNGRADE A vulnerability was found in Seeyon Zhiyuan OA Web Application System 8.1 SP2
CVE-2025-4000 LOW 3.5 DOWNGRADE A vulnerability, which was classified as problematic, was found in Seeyon Zhiyuan OA Web Application System 8.
CVE-2025-3999 LOW 3.5 DOWNGRADE A vulnerability, which was classified as problematic, has been found in Seeyon Zhiyuan OA Web Application Syst

References

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