How severe is CVE-2026-5811?

CVE-2026-5811 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-2026-5811 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-5811?

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

Does CVE-2026-5811 have an EU (EUVD) identifier?

Yes. CVE-2026-5811 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20788.

When was CVE-2026-5811 published?

CVE-2026-5811 was published on 2026-04-08 and last updated on 2026-06-17.

CVE-2026-5811

CVE-2026-5811 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% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-20788
Weakness: CWE-840
Published: 2026-04-08
Last modified: 2026-06-17

Description

A vulnerability was identified in SourceCodester Online Food Ordering System 1.0. Affected by this issue is the function save_product of the file /Actions.php of the component POST Parameter Handler. Such manipulation of the argument price leads to business logic errors. The attack may be performed from remote. The exploit is publicly available and might be used.

Frequently asked questions

What is CVE-2026-5811?: A vulnerability was identified in SourceCodester Online Food Ordering System 1.0. Affected by this issue is the function save_product of the file /Actions.php of the component POST Parameter Handler. Such manipulation of the argument price leads to business logic errors. The attack may be performed from remote. The exploit is publicly available and might be used.
How severe is CVE-2026-5811?: CVE-2026-5811 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-2026-5811 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-5811?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-5811 have an EU (EUVD) identifier?: Yes. CVE-2026-5811 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20788.
When was CVE-2026-5811 published?: CVE-2026-5811 was published on 2026-04-08 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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