How severe is CVE-2025-23207?

CVE-2025-23207 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-23207 being actively exploited?

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

What products are affected by CVE-2025-23207?

CVE-2025-23207 affects Katex. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-23207?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-23207 have an EU (EUVD) identifier?

Yes. CVE-2025-23207 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-0112.

When was CVE-2025-23207 published?

CVE-2025-23207 was published on 2025-01-17 and last updated on 2026-06-17.

CVE-2025-23207

CVE-2025-23207 is a medium-severity vulnerability in Katex with a CVSS 3.x base score of 6.3. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-0112
Weakness: CWE-79
Affected product: Katex
Published: 2025-01-17
Last modified: 2026-06-17

Description

KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web. KaTeX users who render untrusted mathematical expressions with `renderToString` could encounter malicious input using `\htmlData` that runs arbitrary JavaScript, or generate invalid HTML. Users are advised to upgrade to KaTeX v0.16.21 to remove this vulnerability. Users unable to upgrade should avoid use of or turn off the `trust` option, or set it to forbid `\htmlData` commands, forbid inputs containing the substring `"\\htmlData"` and sanitize HTML output from KaTeX.

Frequently asked questions

What is CVE-2025-23207?: KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web. KaTeX users who render untrusted mathematical expressions with `renderToString` could encounter malicious input using `\htmlData` that runs arbitrary JavaScript, or generate invalid HTML. Users are advised to upgrade to KaTeX v0.16.21 to remove this vulnerability. Users unable to upgrade should avoid use of or turn off the `trust` option, or set it to forbid `\htmlData` commands, forbid inputs containing the substring `"\\htmlData"` and sanitize HTML output from KaTeX.
How severe is CVE-2025-23207?: CVE-2025-23207 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-23207 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-23207?: CVE-2025-23207 affects Katex. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-23207?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-23207 have an EU (EUVD) identifier?: Yes. CVE-2025-23207 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-0112.
When was CVE-2025-23207 published?: CVE-2025-23207 was published on 2025-01-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:katex:katex:*:*:*:*:*:*:*:*

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