{"api_version":"1","generated_at":"2026-11-01T09:42:18+00:00","cve":"CVE-2026-115946","urls":{"html":"https://cve.report/CVE-2026-115946","api":"https://cve.report/api/cve/CVE-2026-115946.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-115946","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-115946"},"summary":{"title":"XS::libbrotli versions before 1.2.1.0 for Perl bundle a brotli library with an out-of-bounds write in the decoder","description":"XS::libbrotli versions before 1.2.1.0 for Perl bundle a brotli library with an out-of-bounds write in the decoder.\n\nAffected versions compile a bundled brotli into static archives that dependent XS modules link against at build time, rather than using the system library. The bundled copy, 1.0.7 or 1.1.0 across the range, carries the decoder out-of-bounds write described in CVE-2026-111497. Version 1.2.1.0 updates it to brotli 1.2.1.\n\nXS::libbrotli has no Perl interface, so the decoder is reached through any dependent module that decompresses untrusted data with it. An attacker supplying a crafted brotli stream can corrupt decoder state, disclose memory, crash the process, or potentially execute arbitrary code. Upgrading the system brotli does not remediate this.","state":"PUBLISHED","assigner":"CPANSec","published_at":"2026-11-01 00:16:34","updated_at":"2026-11-01 00:16:34"},"problem_types":["CWE-1395 CWE-1395 Dependency on Vulnerable Third-Party Component"],"metrics":[],"references":[{"url":"https://www.cve.org/CVERecord?id=CVE-2026-111497","name":"https://www.cve.org/CVERecord?id=CVE-2026-111497","refsource":"9b29abf9-4ab0-4765-b253-1875cd9b441e","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://github.com/google/brotli/releases/tag/v1.2.1","name":"https://github.com/google/brotli/releases/tag/v1.2.1","refsource":"9b29abf9-4ab0-4765-b253-1875cd9b441e","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://metacpan.org/release/SYBER/XS-libbrotli-1.2.1.0/changes","name":"https://metacpan.org/release/SYBER/XS-libbrotli-1.2.1.0/changes","refsource":"9b29abf9-4ab0-4765-b253-1875cd9b441e","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-115946","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115946","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[{"source":"CNA","time":"2026-10-29T00:00:00.000Z","lang":"en","value":"Version 1.2.1.0 released with fix."}],"solutions":[{"source":"CNA","title":"","value":"Upgrade to XS-libbrotli 1.2.1.0 or later and reinstall every XS module built against it.","time":"","lang":"en"}],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","modules":["XS::libbrotli"],"packageName":"XS-libbrotli","packageURL":"pkg:cpan/XS-libbrotli","programFiles":["brotli/c/dec/decode.c"],"versions":[{"lessThan":"1.2.1.0","status":"affected","version":"0","versionType":"custom"}]}],"descriptions":[{"lang":"en","value":"XS::libbrotli versions before 1.2.1.0 for Perl bundle a brotli library with an out-of-bounds write in the decoder.\n\nAffected versions compile a bundled brotli into static archives that dependent XS modules link against at build time, rather than using the system library. The bundled copy, 1.0.7 or 1.1.0 across the range, carries the decoder out-of-bounds write described in CVE-2026-111497. Version 1.2.1.0 updates it to brotli 1.2.1.\n\nXS::libbrotli has no Perl interface, so the decoder is reached through any dependent module that decompresses untrusted data with it. An attacker supplying a crafted brotli stream can corrupt decoder state, disclose memory, crash the process, or potentially execute arbitrary code. Upgrading the system brotli does not remediate this."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1395","description":"CWE-1395 Dependency on Vulnerable Third-Party Component","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-31T23:49:36.583Z","orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","shortName":"CPANSec"},"references":[{"tags":["vendor-advisory","related"],"url":"https://www.cve.org/CVERecord?id=CVE-2026-111497"},{"tags":["release-notes"],"url":"https://github.com/google/brotli/releases/tag/v1.2.1"},{"tags":["release-notes"],"url":"https://metacpan.org/release/SYBER/XS-libbrotli-1.2.1.0/changes"}],"solutions":[{"lang":"en","value":"Upgrade to XS-libbrotli 1.2.1.0 or later and reinstall every XS module built against it."}],"source":{"discovery":"UNKNOWN"},"timeline":[{"lang":"en","time":"2026-10-29T00:00:00.000Z","value":"Version 1.2.1.0 released with fix."}],"title":"XS::libbrotli versions before 1.2.1.0 for Perl bundle a brotli library with an out-of-bounds write in the decoder","x_generator":{"engine":"cpansec-cna-tool 0.1"}}},"cveMetadata":{"assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","assignerShortName":"CPANSec","cveId":"CVE-2026-115946","datePublished":"2026-10-31T23:49:36.583Z","dateReserved":"2026-10-23T23:40:26.063Z","dateUpdated":"2026-10-31T23:49:36.583Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-11-01 00:16:34","lastModifiedDate":"2026-11-01 00:16:34","problem_types":["CWE-1395 CWE-1395 Dependency on Vulnerable Third-Party Component"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"115946","Ordinal":"1","Title":"XS::libbrotli versions before 1.2.1.0 for Perl bundle a brotli l","CVE":"CVE-2026-115946","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"115946","Ordinal":"1","NoteData":"XS::libbrotli versions before 1.2.1.0 for Perl bundle a brotli library with an out-of-bounds write in the decoder.\n\nAffected versions compile a bundled brotli into static archives that dependent XS modules link against at build time, rather than using the system library. The bundled copy, 1.0.7 or 1.1.0 across the range, carries the decoder out-of-bounds write described in CVE-2026-111497. Version 1.2.1.0 updates it to brotli 1.2.1.\n\nXS::libbrotli has no Perl interface, so the decoder is reached through any dependent module that decompresses untrusted data with it. An attacker supplying a crafted brotli stream can corrupt decoder state, disclose memory, crash the process, or potentially execute arbitrary code. Upgrading the system brotli does not remediate this.","Type":"Description","Title":"XS::libbrotli versions before 1.2.1.0 for Perl bundle a brotli l"}]}}}