{"id":"CVE-2026-53530","sourceIdentifier":"security-advisories@github.com","published":"2026-08-21T22:16:39.590","lastModified":"2026-10-12T16:10:00.220","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"RaTeX is a KaTeX-compatible math rendering engine written in Rust. Prior to version 0.1.11, the public parser entrypoint `ratex_parser::parse(&str)` panics on the 9-byte input `\\verbéxé` (i.e. `\\verb` followed by the non-ASCII delimiter `é`). When handling a `\\verb` command, the parser slices the verbatim argument with byte indices (`arg[1..arg.len() - 1]`); if the delimiter character is multibyte UTF-8, index `1` lands inside that character and Rust panics with *“byte index 1 is not a char boundary”*. Because RaTeX’s release profile sets `panic = \"abort\"` (`Cargo.toml:48`), the panic aborts the entire process — not just the current request/thread — making this a hard denial of service for any service that renders untrusted LaTeX. Version 0.1.11 fixes the issue."},{"lang":"es","value":"RaTeX es un motor de renderizado de matemáticas compatible con KaTeX escrito en Rust. Antes de la versión 0.1.11, el punto de entrada del analizador público 'ratex_parser::parse(&str)' entra en pánico con la entrada de 9 bytes '\\verbéxé' (es decir, '\\verb' seguido por el delimitador no ASCII 'é'). Al manejar un comando '\\verb', el analizador segmenta el argumento verbatim con índices de bytes ('arg[1..arg.len() - 1]'); si el carácter delimitador es UTF-8 multibyte, el índice '1' cae dentro de ese carácter y Rust entra en pánico con 'byte index 1 is not a char boundary'. Debido a que el perfil de lanzamiento de RaTeX establece 'panic = “abort”' ('Cargo.toml:48'), el pánico aborta todo el proceso - no solo la solicitud/hilo actual - haciendo de esto una dura denegación de servicio para cualquier servicio que renderice LaTeX no confiable. La versión 0.1.11 corrige el problema."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"erweixin","product":"RaTeX","versions":[{"version":"< 0.1.11","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":8.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-08-24T20:04:54.916424Z","id":"CVE-2026-53530","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-248"},{"lang":"en","value":"CWE-400"},{"lang":"en","value":"CWE-1285"}]}],"references":[{"url":"https://github.com/erweixin/RaTeX/security/advisories/GHSA-4hgp-59h5-gvrj","source":"security-advisories@github.com"},{"url":"https://github.com/erweixin/RaTeX/security/advisories/GHSA-4hgp-59h5-gvrj","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}