DEBIAN-CVE-2026-27572

See a problem?
Please try reporting it to the source first.
Source
https://security-tracker.debian.org/tracker/CVE-2026-27572
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27572.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-27572
Upstream
Published
2026-02-24T22:16:32.687Z
Modified
2026-02-26T11:01:32.223762Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

Wasmtime is a runtime for WebAssembly. Prior to versions 24.0.6, 36.0.6, 4.0.04, 41.0.4, and 42.0.0, Wasmtime's implementation of the wasi:http/types.fields resource is susceptible to panics when too many fields are added to the set of headers. Wasmtime's implementation in the wasmtime-wasi-http crate is backed by a data structure which panics when it reaches excessive capacity and this condition was not handled gracefully in Wasmtime. Panicking in a WASI implementation is a Denial of Service vector for embedders and is treated as a security vulnerability in Wasmtime. Wasmtime 24.0.6, 36.0.6, 40.0.4, 41.0.4, and 42.0.0 patch this vulnerability and return a trap to the guest instead of panicking. There are no known workarounds at this time. Embedders are encouraged to update to a patched version of Wasmtime.

References

Affected packages

Debian:13 / rust-wasmtime

Package

Name
rust-wasmtime
Purl
pkg:deb/debian/rust-wasmtime?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

26.*
26.0.1+dfsg-3
26.0.1+dfsg-4
26.0.1+dfsg-5
26.0.1+dfsg-6
26.0.1+dfsg-7
26.0.1+dfsg-8
26.0.1+dfsg-9
26.0.1+dfsg-10
27.*
27.0.0+dfsg-2
27.0.0+dfsg-3
27.0.0+dfsg-4
28.*
28.0.1+dfsg-1
28.0.1+dfsg-2
28.0.1+dfsg-3
29.*
29.0.1+dfsg-1
29.0.1+dfsg-2
29.0.1+dfsg-3
29.0.1+dfsg-4
29.0.1+dfsg-5
29.0.1+dfsg-6
29.0.1+dfsg-7
29.0.1+dfsg-8
36.*
36.0.5+dfsg-1
36.0.5+dfsg-2
36.0.5+dfsg-3
36.0.5+dfsg-4
36.0.5+dfsg-5
36.0.6+dfsg-1
36.0.6+dfsg-2
36.0.6+dfsg-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27572.json"

Debian:14 / rust-wasmtime

Package

Name
rust-wasmtime
Purl
pkg:deb/debian/rust-wasmtime?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

26.*
26.0.1+dfsg-3
26.0.1+dfsg-4
26.0.1+dfsg-5
26.0.1+dfsg-6
26.0.1+dfsg-7
26.0.1+dfsg-8
26.0.1+dfsg-9
26.0.1+dfsg-10
27.*
27.0.0+dfsg-2
27.0.0+dfsg-3
27.0.0+dfsg-4
28.*
28.0.1+dfsg-1
28.0.1+dfsg-2
28.0.1+dfsg-3
29.*
29.0.1+dfsg-1
29.0.1+dfsg-2
29.0.1+dfsg-3
29.0.1+dfsg-4
29.0.1+dfsg-5
29.0.1+dfsg-6
29.0.1+dfsg-7
29.0.1+dfsg-8
36.*
36.0.5+dfsg-1
36.0.5+dfsg-2
36.0.5+dfsg-3
36.0.5+dfsg-4
36.0.5+dfsg-5
36.0.6+dfsg-1
36.0.6+dfsg-2
36.0.6+dfsg-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27572.json"