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CVE-2026-111497VulnerabilityPublished

Red Hat Security Advisory: RHOAI 3.4.6 - Red Hat OpenShift AI

Affects Red HatSource GCVE Database

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Authoritative record:CVE-2026-111497· Critical 9.2

Exploited in the wild · KEV due 10 Nov 2026 · 82% EPSS · fixed in Red Hat package updates : patch Red Hat github.com/google/brotli now.

Data as of 2 Nov 2026, 10:57 UTC

CVSS 4.0 base score
9.2Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Google)CVSS 4.09.2
KEV deadline
 US federal agencies must patch by this date; a sensible deadline for everyone else. Other KEV due dates
EPSS
82.6% chance of exploitation in 30 days – higher than 99% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.2.1, 1.1.1, 1.0.10
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 22 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: evidence found.

    Listed in CISA KEV 5 days after disclosure

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. CVE ID reserved

    by Google LLC

    , 6 days before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. In Threat Radar

    record ingested

    , 4 days after disclosure

  4. , 5 days after disclosure

  5. KEV remediation due

    US federal deadline

    , 19 days after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.

What to do

Upgrade Brotli and github.com/google/brotli to 1.2.1, 1.1.1 or 1.0.10.

Affected software

ProductAffectedFixed in
Brotligithub.com/google/brotliAffected
  • >=1.2.0 <1.2.1
Fixed in
  • 1.2.1
Brotligithub.com/google/brotliAffected
  • >=1.1.0 <1.1.1
Fixed in
  • 1.1.1
Brotligithub.com/google/brotliAffected
  • >=1.0.3 <1.0.10
Fixed in
  • 1.0.10
GitHubgithub.com/google/brotlipkg:github/github.com/google/brotliOther threatsAffected
  • >=1.0.3 <1.0.10
  • >=1.1.0 <1.1.1
  • >=1.2.0 <1.2.1
Fixed in
  • 1.0.10
  • 1.1.1
  • 1.2.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

CVE-2026-111497 is a vulnerability in the Google Brotli decoder used by Red Hat OpenShift AI and other Red Hat products. It involves an out-of-bounds write triggered by a crafted Brotli-compressed stream, potentially leading to memory disclosure, denial of service, or arbitrary code execution when decompressing untrusted Brotli data. Exploitation requires a malformed Brotli stream and is rated as having high attack complexity. Red Hat platform hardenings reduce the likelihood of reliable code execution but do not eliminate crashes or all impacts. The issue affects Brotli decoders used in various Node.js and .NET versions bundled or system-wide in Red Hat Enterprise Linux. Red Hat has released updated images for Red Hat OpenShift AI 3.4.6 and advises following upgrade documentation to apply the errata update.

References

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