How severe is CVE-2026-31858?

CVE-2026-31858 has a CVSS 3.x base score of 8.8, 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 high, and availability high.

Is CVE-2026-31858 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-31858?

CVE-2026-31858 primarily affects Craftcms Craft Cms. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-31858?

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-2026-31858 have an EU (EUVD) identifier?

Yes. CVE-2026-31858 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11259.

When was CVE-2026-31858 published?

CVE-2026-31858 was published on 2026-03-11 and last updated on 2026-06-17.

CVE-2026-31858

CVE-2026-31858 is a high-severity vulnerability in Craftcms Craft Cms with a CVSS 3.x base score of 8.8. 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: High (CVSS 3.x base score 8.8)
CVSS v4: 8.7
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11259
Weakness: CWE-89
Affected product: Craftcms Craft Cms
Published: 2026-03-11
Last modified: 2026-06-17

Description

Craft is a content management system (CMS). The ElementSearchController::actionSearch() endpoint is missing the unset() protection that was added to ElementIndexesController in CVE-2026-25495. The exact same SQL injection vulnerability (including criteria[orderBy], the original advisory vector) works on this controller because the fix was never applied to it. Any authenticated control panel user (no admin required) can inject arbitrary SQL via criteria[where], criteria[orderBy], or other query properties, and extract the full database contents via boolean-based blind injection. Users should update to the patched 5.9.9 release to mitigate the issue.

Frequently asked questions

What is CVE-2026-31858?: Craft is a content management system (CMS). The ElementSearchController::actionSearch() endpoint is missing the unset() protection that was added to ElementIndexesController in CVE-2026-25495. The exact same SQL injection vulnerability (including criteria[orderBy], the original advisory vector) works on this controller because the fix was never applied to it. Any authenticated control panel user (no admin required) can inject arbitrary SQL via criteria[where], criteria[orderBy], or other query properties, and extract the full database contents via boolean-based blind injection. Users should update to the patched 5.9.9 release to mitigate the issue.
How severe is CVE-2026-31858?: CVE-2026-31858 has a CVSS 3.x base score of 8.8, 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 high, and availability high.
Is CVE-2026-31858 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-31858?: CVE-2026-31858 primarily affects Craftcms Craft Cms. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-31858?: 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-2026-31858 have an EU (EUVD) identifier?: Yes. CVE-2026-31858 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11259.
When was CVE-2026-31858 published?: CVE-2026-31858 was published on 2026-03-11 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*
cpe:2.3:a:craftcms:craft_cms:5.0.0:-:*:*:*:*:*:*
cpe:2.3:a:craftcms:craft_cms:5.0.0:rc1:*:*:*:*:*:*

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