How severe is CVE-2023-26859?

CVE-2023-26859 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-26859 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-26859?

CVE-2023-26859 affects Brevo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-26859?

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

When was CVE-2023-26859 published?

CVE-2023-26859 was published on 2023-07-26 and last updated on 2026-06-17.

CVE-2023-26859

CVE-2023-26859 is a critical-severity vulnerability in Brevo with a CVSS 3.x base score of 9.8. 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: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Brevo
Published: 2023-07-26
Last modified: 2026-06-17

Description

SQL injection vulnerability found in PrestaShop sendinblue v.4.0.15 and before allow a remote attacker to gain privileges via the ajaxOrderTracking.php component.

Frequently asked questions

What is CVE-2023-26859?: SQL injection vulnerability found in PrestaShop sendinblue v.4.0.15 and before allow a remote attacker to gain privileges via the ajaxOrderTracking.php component.
How severe is CVE-2023-26859?: CVE-2023-26859 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-26859 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-26859?: CVE-2023-26859 affects Brevo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-26859?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-26859 published?: CVE-2023-26859 was published on 2023-07-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:brevo:brevo:*:*:*:*:*:*:*:*

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