UnratedFix available
Fix CVE(s): CVE-2026-111497
Type: advisorySources: OSV
* SECURITY UPDATE: Invalid stream not detected during block switch decoding - debian/patches/CVE-2026-111497.patch: return an error code from the literal/command/distance block-switch decoders and abort decoding with BROTLI_DECODER_ERROR_FORMAT_BLOCK_SWITCH in c/dec/decode.c, c/include/brotli/decode.h - CVE-2026-111497
- Products
- brotli, libbrotli-dev, libbrotli1, python-brotli, python3-brotli
- Affected versions
- Not specified
- Fixed versions
- 1.0.3-1ubuntu1.3+tuxcare.els1
- CVEs
- CVE-2026-111497
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:43 UTC · Revision 1
Source evidence
* SECURITY UPDATE: Invalid stream not detected during block switch decoding - debian/patches/CVE-2026-111497.patch: return an error code from the literal/command/distance block-switch decoders and abort decoding with BROTLI_DECODER_ERROR_FORMAT_BLOCK_SWITCH in c/dec/decode.c, c/include/brotli/decode.h - CVE-2026-111497
osv:CLSA-2026-1792824525
brotli
Fixed versions: 1.0.3-1ubuntu1.3+tuxcare.els1
libbrotli-dev
Fixed versions: 1.0.3-1ubuntu1.3+tuxcare.els1
libbrotli1
Fixed versions: 1.0.3-1ubuntu1.3+tuxcare.els1
python-brotli
Fixed versions: 1.0.3-1ubuntu1.3+tuxcare.els1
python3-brotli
Fixed versions: 1.0.3-1ubuntu1.3+tuxcare.els1
Complete source record
{
"id": "e2e04d355fcb796c9afe647e9804a6383e542d056edaa727c5eba2a0025287ac",
"url": "https://osv.dev/vulnerability/CLSA-2026-1792824525",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2026-111497",
"summary": "* SECURITY UPDATE: Invalid stream not detected during block switch decoding - debian/patches/CVE-2026-111497.patch: return an error code from the literal/command/distance block-switch decoders and abort decoding with BROTLI_DECODER_ERROR_FORMAT_BLOCK_SWITCH in c/dec/decode.c, c/include/brotli/decode.h - CVE-2026-111497",
"evidence": "osv:CLSA-2026-1792824525",
"products": [
{
"name": {
"value": "brotli",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.0.3-1ubuntu1.3+tuxcare.els1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libbrotli-dev",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.0.3-1ubuntu1.3+tuxcare.els1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "libbrotli1",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.0.3-1ubuntu1.3+tuxcare.els1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python-brotli",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.0.3-1ubuntu1.3+tuxcare.els1",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "python3-brotli",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.0.3-1ubuntu1.3+tuxcare.els1",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1792824525",
"aliases": [
"CLSA-2026-1792824525"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.0.3-1ubuntu1.3+tuxcare.els1"
}
]
}
],
"package": {
"name": "brotli",
"purl": "pkg:deb/tuxcare/brotli?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1792824525.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.0.3-1ubuntu1.3+tuxcare.els1"
}
]
}
],
"package": {
"name": "libbrotli-dev",
"purl": "pkg:deb/tuxcare/libbrotli-dev?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1792824525.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.0.3-1ubuntu1.3+tuxcare.els1"
}
]
}
],
"package": {
"name": "libbrotli1",
"purl": "pkg:deb/tuxcare/libbrotli1?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1792824525.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.0.3-1ubuntu1.3+tuxcare.els1"
}
]
}
],
"package": {
"name": "python-brotli",
"purl": "pkg:deb/tuxcare/python-brotli?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1792824525.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.0.3-1ubuntu1.3+tuxcare.els1"
}
]
}
],
"package": {
"name": "python3-brotli",
"purl": "pkg:deb/tuxcare/python3-brotli?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1792824525.json"
}
}
],
"modified": "2026-10-26T09:32:04.927275802Z",
"provider": "osv",
"upstream": [
"CVE-2026-111497"
],
"references": [
"https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1792824525.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-111497"
]
},
"related_cves": [
{
"value": "CVE-2026-111497",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 449642,
"published_at": "2026-10-24T06:48:56+00:00"
}