{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54610", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-15T19:45:23.540Z", "datePublished": "2026-10-30T20:39:19.805Z", "dateUpdated": "2026-10-30T20:39:19.805Z"}, "containers": {"cna": {"title": "LibreDWG: const-input mutation and crash in bit_TV_to_utf8 error handling", "problemTypes": [{"descriptions": [{"cweId": "CWE-471", "lang": "en", "description": "CWE-471: Modification of Assumed-Immutable Data (MAID)", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-703", "lang": "en", "description": "CWE-703: Improper Check or Handling of Exceptional Conditions", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 3.3, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/LibreDWG/libredwg/security/advisories/GHSA-5p98-8245-6hxq", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/LibreDWG/libredwg/security/advisories/GHSA-5p98-8245-6hxq"}, {"name": "https://github.com/LibreDWG/libredwg/commit/08c034a224a4e9512b1cd62e74b5cf081a4cfa89", "tags": ["x_refsource_MISC"], "url": "https://github.com/LibreDWG/libredwg/commit/08c034a224a4e9512b1cd62e74b5cf081a4cfa89"}, {"name": "https://github.com/LibreDWG/libredwg/releases/tag/0.14", "tags": ["x_refsource_MISC"], "url": "https://github.com/LibreDWG/libredwg/releases/tag/0.14"}, {"name": "https://github.com/user-attachments/files/28631091/libredwg-bit-tv-to-utf8-submission.tar.gz", "tags": ["x_refsource_MISC"], "url": "https://github.com/user-attachments/files/28631091/libredwg-bit-tv-to-utf8-submission.tar.gz"}], "affected": [{"vendor": "LibreDWG", "product": "libredwg", "versions": [{"version": "< 0.14", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-10-30T20:39:19.805Z"}, "descriptions": [{"lang": "en", "value": "LibreDWG is a free C library to read and write DWG files. Prior to 0.14, `bit_TV_to_utf8()` in `src/bits.c` can write to the caller-provided `src` buffer despite accepting const input. On an `iconv()` error other than `E2BIG`, the function frees its output buffer and passes the original input alias to `bit_u_expand()`, which expands or shrinks Unicode and multibyte escape sequences in place. If the input is a string literal, read-only mapping, or other immutable buffer, the write can cause a segmentation fault and denial of service; mutable caller-owned input can be unexpectedly modified before being returned. This affects applications that expose the conversion API to untrusted input under those conditions. Direct file-triggered exploitability through normal DWG decode/export paths remains unconfirmed because many TV strings are heap allocated by bit_read_TV(). This issue is fixed in version 0.14."}], "source": {"advisory": "GHSA-5p98-8245-6hxq", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "libredwg", "vendor": "LibreDWG", "versions": [{"status": "affected", "version": "< 0.14"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "LibreDWG is a free C library to read and write DWG files. Prior to 0.14, `bit_TV_to_utf8()` in `src/bits.c` can write to the caller-provided `src` buffer despite accepting const input. On an `iconv()` error other than `E2BIG`, the function frees its output buffer and passes the original input alias to `bit_u_expand()`, which expands or shrinks Unicode and multibyte escape sequences in place. If the input is a string literal, read-only mapping, or other immutable buffer, the write can cause a segmentation fault and denial of service; mutable caller-owned input can be unexpectedly modified before being returned. This affects applications that expose the conversion API to untrusted input under those conditions. Direct file-triggered exploitability through normal DWG decode/export paths remains unconfirmed because many TV strings are heap allocated by bit_read_TV(). This issue is fixed in version 0.14."}], "id": "CVE-2026-54610", "lastModified": "2026-10-30T21:16:57.520", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 3.3, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-10-30T21:16:57.520", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/LibreDWG/libredwg/commit/08c034a224a4e9512b1cd62e74b5cf081a4cfa89"}, {"source": "security-advisories@github.com", "url": "https://github.com/LibreDWG/libredwg/releases/tag/0.14"}, {"source": "security-advisories@github.com", "url": "https://github.com/LibreDWG/libredwg/security/advisories/GHSA-5p98-8245-6hxq"}, {"source": "security-advisories@github.com", "url": "https://github.com/user-attachments/files/28631091/libredwg-bit-tv-to-utf8-submission.tar.gz"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-471"}, {"lang": "en", "value": "CWE-703"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,0.14)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "libredwg", "source": "cna", "vendor": "LibreDWG"}, "product": "libredwg", "vendor": "libredwg"}], "created": "2026-10-30T21:30:11.692277+00:00", "updated": "2026-10-30T21:30:11.692315+00:00", "vendors": ["libredwg", "libredwg$PRODUCT$libredwg"]}