DEBIAN-CVE-2026-87732

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Source
https://security-tracker.debian.org/tracker/CVE-2026-87732
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-87732.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-87732
Upstream
  • CVE-2026-87732
Published
2026-09-09T05:18:20Z
Modified
2026-09-10T08:47:21Z
Severity
  • 6.2 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
[none]
Details

An issue was discovered in the mirage-crypto package before 2.2.0 for OCaml. The AES.GCM.authenticate_decrypt_into and Chacha20.authenticate_decrypt_into functions write the decrypted plaintext into a caller-provided buffer and only then compares the tag. On a forged tag, the functions returns false, but the destination buffer already holds the full plaintext.

References

Affected packages

Debian:12 / ocaml-mirage-crypto

Package

Name
ocaml-mirage-crypto
Purl
pkg:deb/debian/ocaml-mirage-crypto?arch=source&distro=bookworm

Affected ranges

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

Affected versions

0.*
0.10.7-1
0.11.1-1
0.11.1-2
0.11.1-3
0.11.2-1
0.11.2-2
0.11.3-1
1.*
1.1.0-1
1.1.0-2
2.*
2.0.0-1
2.0.1-1
2.0.2-1
2.0.3-1
2.1.0-1
2.2.0-1
2.2.0-2
2.3.0-1
2.4.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-87732.json"

Debian:13 / ocaml-mirage-crypto

Package

Name
ocaml-mirage-crypto
Purl
pkg:deb/debian/ocaml-mirage-crypto?arch=source&distro=trixie

Affected ranges

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

Affected versions

2.*
2.0.0-1
2.0.1-1
2.0.2-1
2.0.3-1
2.1.0-1
2.2.0-1
2.2.0-2
2.3.0-1
2.4.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-87732.json"

Debian:14 / ocaml-mirage-crypto

Package

Name
ocaml-mirage-crypto
Purl
pkg:deb/debian/ocaml-mirage-crypto?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.2.0-1

Affected versions

2.*
2.0.0-1
2.0.1-1
2.0.2-1
2.0.3-1
2.1.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-87732.json"