XS::libbrotli versions before 1.2.1.0 for Perl bundle a brotli library with an out-of-bounds write in the decoder.
Affected 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.
XS::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.
Metrics
Affected Vendors & Products
References
History
Sat, 07 Nov 2026 07:30:00 +0000
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Tue, 03 Nov 2026 17:00:00 +0000
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Perl
Perl xs::libbrotli |
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Perl
Perl xs::libbrotli |
Sun, 01 Nov 2026 00:00:00 +0000
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| Description | XS::libbrotli versions before 1.2.1.0 for Perl bundle a brotli library with an out-of-bounds write in the decoder. Affected 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. XS::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. | |
| Title | XS::libbrotli versions before 1.2.1.0 for Perl bundle a brotli library with an out-of-bounds write in the decoder | |
| Weaknesses | CWE-1395 | |
| References |
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Status: PUBLISHED
Assigner: CPANSec
Published: 2026-10-31T23:49:36.583Z
Updated: 2026-11-06T13:45:18.524Z
Reserved: 2026-10-23T23:40:26.063Z
Link: CVE-2026-115946
Updated: 2026-11-06T13:45:14.510Z
Status : Deferred
Published: 2026-11-01T00:16:34.437
Modified: 2026-11-06T14:17:06.580
Link: CVE-2026-115946
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