OSV-2026-1235

See a problem?
Import Source
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/fluent-bit/OSV-2026-1235.yaml
JSON Data
https://api.osv.dev/v1/vulns/OSV-2026-1235
Published
2026-09-06T00:05:19Z
Modified
2026-09-06T00:05:19Z
Summary
UNKNOWN READ in renumber_by_map
Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=557283672

Crash type: UNKNOWN READ
Crash state:
renumber_by_map
renumber_by_map
disable_noname_group_capture
References

Affected packages

OSS-Fuzz / fluent-bit

Package

Name
fluent-bit
Purl
pkg:generic/fluent-bit

Affected ranges

Type
GIT
Repo
https://github.com/fluent/fluent-bit/
Events

Affected versions

v4.*
v4.2.1
v4.2.2
v5.*
v5.0.0
v5.0.0-dev-20260228
v5.0.1
v5.0.2
v5.0.3
v5.0.4
v5.0.5
v5.0.6
v5.0.7
v5.0.8
v5.0.9
v5.1.0
v5.1.1

Ecosystem specific

{
    "severity": "MEDIUM"
}

Database specific

fixed_range
"a31cf11a22434a819e4594c9443799b4340819b0:98f3bdeb9ad4af5bcb03a7ae1872e694b207f274"
introduced_range
"ae1445463ca03bac9b46147166c0ee00993363e8:10ebd3a354f2a052ac865960145fda844b3b120e"
source
"https://github.com/google/oss-fuzz-vulns/blob/main/vulns/fluent-bit/OSV-2026-1235.yaml"