How severe is CVE-2026-82423?

CVE-2026-82423 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2026-82423 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-82423?

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

When was CVE-2026-82423 published?

CVE-2026-82423 was published on 2026-08-29 and last updated on 2026-09-01.

CVE-2026-82423

CVE-2026-82423 is a medium-severity vulnerability with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 5.5
CVSS v4: 2.1
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-840
Published: 2026-08-29
Last modified: 2026-09-01

Description

A vulnerability has been found in macrozheng mall up to 1.0.3. The affected element is an unknown function of the file /order/paySuccess of the component Payment Status Endpoint. The manipulation of the argument orderId leads to enforcement of behavioral workflow. The attack is possible to be carried out remotely. The vendor deleted the GitHub issue for this vulnerability without any explanation.

Frequently asked questions

What is CVE-2026-82423?: A vulnerability has been found in macrozheng mall up to 1.0.3. The affected element is an unknown function of the file /order/paySuccess of the component Payment Status Endpoint. The manipulation of the argument orderId leads to enforcement of behavioral workflow. The attack is possible to be carried out remotely. The vendor deleted the GitHub issue for this vulnerability without any explanation.
How severe is CVE-2026-82423?: CVE-2026-82423 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2026-82423 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-82423?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-82423 published?: CVE-2026-82423 was published on 2026-08-29 and last updated on 2026-09-01.

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-2026-58558 — High (CVSS 7.8): Permission control vulnerability in the file system. Impact: Successful exploitation of this vulnerability may affect…

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