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CVE-2026-111497VulnerabilityPublished

Red Hat Security Advisory: Red Hat OpenShift Dev Spaces 3.31.2 RHEL 10 Container Release

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 · fixed in Red Hat package updates : patch Red Hat github.com/google/brotli now.

Data as of 3 Nov 2026, 07:13 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
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 security vulnerability in the Google Brotli decoder used by Red Hat OpenShift Dev Spaces 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. Exploitation requires decompressing attacker-controlled Brotli data, such as HTTP content with Content-Encoding: br. Red Hat rates this flaw as Important with high attack complexity due to required conditions and platform hardenings. The vulnerability affects Brotli decoder usage in various Node.js and .NET versions depending on whether they use system or bundled Brotli libraries.

References

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