{"action":"Upgrade katex to 0.18.2 or later.","affected":[{"fixed":"0.18.2","introduced":"0.11.0"}],"component":"katex","cve_ids":["CVE-2026-103923"],"ecosystem":"npm","epss":0.003,"exploited":false,"fixed_versions":["0.18.2"],"ghsa_id":"GHSA-238p-pmpm-9mq7","id":"tcs_01M5KERR5SV4R18TF9GA681A6R","modified_at":"2026-10-06T00:00:09.544490390Z","published_at":"2026-10-05T23:41:05Z","references":["https://osv.dev/vulnerability/GHSA-238p-pmpm-9mq7","https://github.com/KaTeX/KaTeX/security/advisories/GHSA-238p-pmpm-9mq7","https://nvd.nist.gov/vuln/detail/CVE-2026-103923","https://github.com/KaTeX/KaTeX/pull/4260","https://github.com/KaTeX/KaTeX/commit/0adf7e77db6915d991803b29699f82b1ccf8d4f4","https://github.com/KaTeX/KaTeX","https://github.com/KaTeX/KaTeX/releases/tag/v0.18.2"],"severity":{"label":"low","score":2.1},"sources":[{"source":"osv","source_id":"GHSA-238p-pmpm-9mq7","url":"https://osv.dev/vulnerability/GHSA-238p-pmpm-9mq7"},{"source":"nvd","source_id":"CVE-2026-103923","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103923"}],"summary":"KaTeX: Existing prototype pollution can bypass trust restrictions"}