How severe is CVE-2026-58521?

CVE-2026-58521 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-2026-58521 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-58521?

CVE-2026-58521 affects Mediawiki Cargo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-58521?

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-2026-58521 published?

CVE-2026-58521 was published on 2026-07-01 and last updated on 2026-07-07.

CVE-2026-58521

CVE-2026-58521 is a critical-severity vulnerability in Mediawiki Cargo 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)
CVSS v4: 6.9
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Mediawiki Cargo
Published: 2026-07-01
Last modified: 2026-07-07

Description

Improper neutralization of special elements used in an SQL command ('SQL injection') vulnerability in The Wikimedia Foundation Mediawiki - Cargo Extension allows SQL Injection. This issue affects Mediawiki - Cargo Extension: from * before 1.43.9,1.44.6,1.45.4.

Frequently asked questions

What is CVE-2026-58521?: Improper neutralization of special elements used in an SQL command ('SQL injection') vulnerability in The Wikimedia Foundation Mediawiki - Cargo Extension allows SQL Injection. This issue affects Mediawiki - Cargo Extension: from * before 1.43.9,1.44.6,1.45.4.
How severe is CVE-2026-58521?: CVE-2026-58521 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-2026-58521 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-58521?: CVE-2026-58521 affects Mediawiki Cargo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-58521?: 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-2026-58521 published?: CVE-2026-58521 was published on 2026-07-01 and last updated on 2026-07-07.

References

Affected products (1)

cpe:2.3:a:mediawiki:cargo:*:*:*:*:*:mediawiki:*:*

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