OSV-2026-959

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Import Source
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/wt/OSV-2026-959.yaml
JSON Data
https://api.osv.dev/v1/vulns/OSV-2026-959
Published
2026-06-23T00:15:52.533371Z
Modified
2026-06-23T00:15:52.533654Z
Summary
Heap-use-after-free in Wt::Http::Request::parseFormUrlEncoded
Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=526224351

Crash type: Heap-use-after-free READ 8
Crash state:
Wt::Http::Request::parseFormUrlEncoded
Wt::CgiParser::parse
fuzz-cgi.C
References

Affected packages

OSS-Fuzz / wt

Package

Name
wt
Purl
pkg:generic/wt

Affected ranges

Type
GIT
Repo
https://github.com/emweb/wt.git
Events
Introduced
2379295442b60a75f20abc6955b11f07d431881c
Fixed
066d53243eff54a95a2951ee26613c91d74ac613

Ecosystem specific 

{
    "severity": "HIGH"
}

Database specific

fixed_range 
"2379295442b60a75f20abc6955b11f07d431881c:066d53243eff54a95a2951ee26613c91d74ac613"
source 
"https://github.com/google/oss-fuzz-vulns/blob/main/vulns/wt/OSV-2026-959.yaml"