How severe is CVE-2024-28243?

CVE-2024-28243 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-28243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-28243?

CVE-2024-28243 affects Katex. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-28243?

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

Does CVE-2024-28243 have an EU (EUVD) identifier?

Yes. CVE-2024-28243 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0839.

When was CVE-2024-28243 published?

CVE-2024-28243 was published on 2024-03-25 and last updated on 2026-06-17.

CVE-2024-28243

CVE-2024-28243 is a medium-severity vulnerability in Katex with a CVSS 3.x base score of 6.5. 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-674.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0839
Weakness: CWE-674
Affected product: Katex
Published: 2024-03-25
Last modified: 2026-06-17

Description

KaTeX is a JavaScript library for TeX math rendering on the web. KaTeX users who render untrusted mathematical expressions could encounter malicious input using `\edef` that causes a near-infinite loop, despite setting `maxExpand` to avoid such loops. This can be used as an availability attack, where e.g. a client rendering another user's KaTeX input will be unable to use the site due to memory overflow, tying up the main thread, or stack overflow. Upgrade to KaTeX v0.16.10 to remove this vulnerability.

Frequently asked questions

What is CVE-2024-28243?: KaTeX is a JavaScript library for TeX math rendering on the web. KaTeX users who render untrusted mathematical expressions could encounter malicious input using `\edef` that causes a near-infinite loop, despite setting `maxExpand` to avoid such loops. This can be used as an availability attack, where e.g. a client rendering another user's KaTeX input will be unable to use the site due to memory overflow, tying up the main thread, or stack overflow. Upgrade to KaTeX v0.16.10 to remove this vulnerability.
How severe is CVE-2024-28243?: CVE-2024-28243 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-28243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-28243?: CVE-2024-28243 affects Katex. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-28243?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-28243 have an EU (EUVD) identifier?: Yes. CVE-2024-28243 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0839.
When was CVE-2024-28243 published?: CVE-2024-28243 was published on 2024-03-25 and last updated on 2026-06-17.

References

Affected products (1)

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

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CVE-2024-28244 — Medium (CVSS 6.5): KaTeX is a JavaScript library for TeX math rendering on the web. KaTeX users who render untrusted mathematical…
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