How severe is CVE-2026-8738?

CVE-2026-8738 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2026-8738 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-8738?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-8738 have an EU (EUVD) identifier?

Yes. CVE-2026-8738 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30688.

When was CVE-2026-8738 published?

CVE-2026-8738 was published on 2026-05-17 and last updated on 2026-06-17.

CVE-2026-8738

CVE-2026-8738 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-840.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 6.4
CVSS v4: 5.5
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30688
Weakness: CWE-840
Published: 2026-05-17
Last modified: 2026-06-17

Description

A security vulnerability has been detected in Sanluan PublicCMS 5.202506.d. Impacted is the function TradeOrderController.pay/TradePaymentController.pay/AccountGatewayComponent.pay of the file publiccms-trade/src/main/java/com/publiccms/controller/web/trade/TradeOrderController.java of the component Trade Payment Flow. The manipulation leads to business logic errors. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-8738?: A security vulnerability has been detected in Sanluan PublicCMS 5.202506.d. Impacted is the function TradeOrderController.pay/TradePaymentController.pay/AccountGatewayComponent.pay of the file publiccms-trade/src/main/java/com/publiccms/controller/web/trade/TradeOrderController.java of the component Trade Payment Flow. The manipulation leads to business logic errors. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-8738?: CVE-2026-8738 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2026-8738 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-8738?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-8738 have an EU (EUVD) identifier?: Yes. CVE-2026-8738 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30688.
When was CVE-2026-8738 published?: CVE-2026-8738 was published on 2026-05-17 and last updated on 2026-06-17.

References

Other CWE-840 vulnerabilities

CVE-2022-4719 — Critical (CVSS 9.8): Business Logic Errors in GitHub repository ikus060/rdiffweb prior to 2.5.5.
CVE-2022-3363 — Critical (CVSS 9.8): Business Logic Errors in GitHub repository ikus060/rdiffweb prior to 2.5.0a7.
CVE-2021-4171 — Critical (CVSS 9.8): calibre-web is vulnerable to Business Logic Errors
CVE-2024-39671 — Critical (CVSS 9.3): Access control vulnerability in the security verification module. Impact: Successful exploitation of this vulnerability…
CVE-2024-54098 — High (CVSS 8.5): Service logic error vulnerability in the system service module Impact: Successful exploitation of this vulnerability…
CVE-2025-1908 — High (CVSS 7.7): An issue has been discovered in GitLab EE/CE that could allow an attacker to track users' browsing activities,…

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