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High 1 exploited CVE RLSA-2026:90449 1 CVE

Important: brotli security update

Published Oct 29, 2026 · Updated Oct 29, 2026

Summary

Brotli is a generic-purpose lossless compression algorithm that compresses data using a combination of a modern variant of the LZ77 algorithm, Huffman coding and 2nd order context modeling, with a compression ratio comparable to the best currently available general-purpose compression methods. It is similar in speed with deflate but offers more dense compression.

Security Fix(es):

* brotli: Out-of-Bounds Write in Google Brotli Decoder (CVE-2026-111497)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 1

ReleasePackageFixed in
Rocky Linux · 10 brotli 0:1.1.0-8.el10_2.1

Vulnerabilities 1

  • Critical 9.2
    CVE-2026-111497 Exploited Public exploit EPSS 83%

    Out-of-Bounds Write in Google Brotli Decoder

    A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on all platforms allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, disclose sensitive memory contents, cause …

    KEV Oct 27, 2026

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2558973
  • advisory
    https://access.redhat.com/errata/RHSA-2026:90449