CVE-2026-53530

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53530", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-09T17:30:33.457Z", "datePublished": "2026-08-21T21:31:12.665Z", "dateUpdated": "2026-08-24T20:05:00.628Z"}, "containers": {"cna": {"title": "ratex-parser panics on `\\verb` with a multibyte delimiter (UTF-8 byte-boundary slice)", "problemTypes": [{"descriptions": [{"cweId": "CWE-248", "lang": "en", "description": "CWE-248: Uncaught Exception", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-400", "lang": "en", "description": "CWE-400: Uncontrolled Resource Consumption", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-1285", "lang": "en", "description": "CWE-1285: Improper Validation of Specified Index, Position, or Offset in Input", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH", "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", "version": "4.0"}}], "references": [{"name": "https://github.com/erweixin/RaTeX/security/advisories/GHSA-4hgp-59h5-gvrj", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/erweixin/RaTeX/security/advisories/GHSA-4hgp-59h5-gvrj"}], "affected": [{"vendor": "erweixin", "product": "RaTeX", "versions": [{"version": "< 0.1.11", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-21T21:31:12.665Z"}, "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 `\\verb\u00e9x\u00e9` (i.e. `\\verb` followed by the non-ASCII delimiter `\u00e9`). 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 *\u201cbyte index 1 is not a char boundary\u201d*. Because RaTeX\u2019s release profile sets `panic = \"abort\"` (`Cargo.toml:48`), the panic aborts the entire process \u2014 not just the current request/thread \u2014 making this a hard denial of service for any service that renders untrusted LaTeX. Version 0.1.11 fixes the issue."}], "source": {"advisory": "GHSA-4hgp-59h5-gvrj", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/erweixin/RaTeX/security/advisories/GHSA-4hgp-59h5-gvrj", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-24T20:04:54.916424Z", "id": "CVE-2026-53530", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-24T20:05:00.628Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-53530", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-24T20:04:54.916424Z"}}}], "references": [{"url": "https://github.com/erweixin/RaTeX/security/advisories/GHSA-4hgp-59h5-gvrj", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-24T20:04:37.162Z"}}], "cna": {"title": "ratex-parser panics on `\\verb` with a multibyte delimiter (UTF-8 byte-boundary slice)", "source": {"advisory": "GHSA-4hgp-59h5-gvrj", "discovery": "UNKNOWN"}, "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 8.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "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", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE"}}], "affected": [{"vendor": "erweixin", "product": "RaTeX", "versions": [{"status": "affected", "version": "< 0.1.11"}]}], "references": [{"url": "https://github.com/erweixin/RaTeX/security/advisories/GHSA-4hgp-59h5-gvrj", "name": "https://github.com/erweixin/RaTeX/security/advisories/GHSA-4hgp-59h5-gvrj", "tags": ["x_refsource_CONFIRM"]}], "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 `\\verb\u00e9x\u00e9` (i.e. `\\verb` followed by the non-ASCII delimiter `\u00e9`). 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 *\u201cbyte index 1 is not a char boundary\u201d*. Because RaTeX\u2019s release profile sets `panic = \"abort\"` (`Cargo.toml:48`), the panic aborts the entire process \u2014 not just the current request/thread \u2014 making this a hard denial of service for any service that renders untrusted LaTeX. Version 0.1.11 fixes the issue."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-248", "description": "CWE-248: Uncaught Exception"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-400", "description": "CWE-400: Uncontrolled Resource Consumption"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-1285", "description": "CWE-1285: Improper Validation of Specified Index, Position, or Offset in Input"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-08-21T21:31:12.665Z"}}}, "cveMetadata": {"cveId": "CVE-2026-53530", "state": "PUBLISHED", "dateUpdated": "2026-08-24T20:05:00.628Z", "dateReserved": "2026-06-09T17:30:33.457Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-08-21T21:31:12.665Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "RaTeX", "vendor": "erweixin", "versions": [{"status": "affected", "version": "< 0.1.11"}]}], "source": "security-advisories@github.com"}], "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 `\\verb\u00e9x\u00e9` (i.e. `\\verb` followed by the non-ASCII delimiter `\u00e9`). 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 *\u201cbyte index 1 is not a char boundary\u201d*. Because RaTeX\u2019s release profile sets `panic = \"abort\"` (`Cargo.toml:48`), the panic aborts the entire process \u2014 not just the current request/thread \u2014 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 matem\u00e1ticas compatible con KaTeX escrito en Rust. Antes de la versi\u00f3n 0.1.11, el punto de entrada del analizador p\u00fablico 'ratex_parser::parse(&str)' entra en p\u00e1nico con la entrada de 9 bytes '\\verb\u00e9x\u00e9' (es decir, '\\verb' seguido por el delimitador no ASCII '\u00e9'). Al manejar un comando '\\verb', el analizador segmenta el argumento verbatim con \u00edndices de bytes ('arg[1..arg.len() - 1]'); si el car\u00e1cter delimitador es UTF-8 multibyte, el \u00edndice '1' cae dentro de ese car\u00e1cter y Rust entra en p\u00e1nico con 'byte index 1 is not a char boundary'. Debido a que el perfil de lanzamiento de RaTeX establece 'panic = \u201cabort\u201d' ('Cargo.toml:48'), el p\u00e1nico aborta todo el proceso - no solo la solicitud/hilo actual - haciendo de esto una dura denegaci\u00f3n de servicio para cualquier servicio que renderice LaTeX no confiable. La versi\u00f3n 0.1.11 corrige el problema."}], "id": "CVE-2026-53530", "lastModified": "2026-10-12T16:10:00.220", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53530", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-24T20:04:54.916424Z", "version": "2.0.3"}}]}, "published": "2026-08-21T22:16:39.590", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/erweixin/RaTeX/security/advisories/GHSA-4hgp-59h5-gvrj"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/erweixin/RaTeX/security/advisories/GHSA-4hgp-59h5-gvrj"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-248"}, {"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-1285"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.1.11)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "RaTeX", "source": "cna", "vendor": "erweixin"}, "product": "ratex", "vendor": "erweixin"}], "created": "2026-08-21T22:45:04.682224+00:00", "updated": "2026-08-23T16:40:22.801341+00:00", "vendors": ["erweixin", "erweixin$PRODUCT$ratex"]}