How severe is CVE-2026-40836?

CVE-2026-40836 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2026-40836 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-40836?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-40836 have an EU (EUVD) identifier?

Yes. CVE-2026-40836 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32135.

When was CVE-2026-40836 published?

CVE-2026-40836 was published on 2026-05-27 and last updated on 2026-06-17.

CVE-2026-40836

CVE-2026-40836 is a high-severity vulnerability with a CVSS 3.x base score of 7.1. 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-89.

Key facts

Severity: High (CVSS 3.x base score 7.1)
CVSS v4: 7.1
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-32135
Weakness: CWE-89
Published: 2026-05-27
Last modified: 2026-06-17

Description

An low privileged remote attacker can exploit an unauthenticated SQL Injection vulnerability in the inmessage model due to improper neutralization of special elements in a SQL DELETE command allowing for reading the whole database and deleting entries in a non critical table. This can result in a total loss of confidentiality and some loss of integrity.

Frequently asked questions

What is CVE-2026-40836?: An low privileged remote attacker can exploit an unauthenticated SQL Injection vulnerability in the inmessage model due to improper neutralization of special elements in a SQL DELETE command allowing for reading the whole database and deleting entries in a non critical table. This can result in a total loss of confidentiality and some loss of integrity.
How severe is CVE-2026-40836?: CVE-2026-40836 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2026-40836 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-40836?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-40836 have an EU (EUVD) identifier?: Yes. CVE-2026-40836 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32135.
When was CVE-2026-40836 published?: CVE-2026-40836 was published on 2026-05-27 and last updated on 2026-06-17.

References

https://www.certvde.com/en/advisories/VDE-2026-044/

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