How severe is CVE-2025-67843?

CVE-2025-67843 has a CVSS 3.x base score of 8.3, 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 low.

Is CVE-2025-67843 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-67843?

CVE-2025-67843 affects Mintlify. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-67843?

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-2025-67843 have an EU (EUVD) identifier?

Yes. CVE-2025-67843 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204427.

When was CVE-2025-67843 published?

CVE-2025-67843 was published on 2025-12-19 and last updated on 2026-06-17.

CVE-2025-67843

CVE-2025-67843 is a high-severity vulnerability in Mintlify with a CVSS 3.x base score of 8.3. 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-1336.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204427
Weakness: CWE-1336
Affected product: Mintlify
Published: 2025-12-19
Last modified: 2026-06-17

Description

A Server-Side Template Injection (SSTI) vulnerability in the MDX Rendering Engine in Mintlify Platform before 2025-11-15 allows remote attackers to execute arbitrary code via inline JSX expressions in an MDX file.

Frequently asked questions

What is CVE-2025-67843?: A Server-Side Template Injection (SSTI) vulnerability in the MDX Rendering Engine in Mintlify Platform before 2025-11-15 allows remote attackers to execute arbitrary code via inline JSX expressions in an MDX file.
How severe is CVE-2025-67843?: CVE-2025-67843 has a CVSS 3.x base score of 8.3, 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 low.
Is CVE-2025-67843 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-67843?: CVE-2025-67843 affects Mintlify. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-67843?: 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-2025-67843 have an EU (EUVD) identifier?: Yes. CVE-2025-67843 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204427.
When was CVE-2025-67843 published?: CVE-2025-67843 was published on 2025-12-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mintlify:mintlify:*:*:*:*:*:*:*:*

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