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 a denial of service, or potentially execute arbitrary code using a crafted Brotli-compressed stream. Users need to update any Brotli libraries or binaries between 1.0.3 through 1.2.0 to the latest available version: 1.0.10 or 1.1.1 or 1.2.1.
CVE-2026-111497
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-111497
Brotli
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/google/brotli",
"vendor": "Google",
"product": "Brotli",
"versions": [
{
"status": "affected",
"version": "1.0.3",
"lessThan": "1.0.10",
"versionType": "semver"
},
{
"status": "affected",
"version": "1.1.0",
"lessThan": "1.1.1",
"versionType": "semver"
},
{
"status": "affected",
"version": "1.2.0",
"lessThan": "1.2.1",
"versionType": "semver"
}
],
"packageName": "github.com/google/brotli",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-111497
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #55798 · Revision 1
- Added to Heist Feed
- Publisher date