DEBIAN-CVE-2026-65627

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Source
https://security-tracker.debian.org/tracker/CVE-2026-65627
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65627.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-65627
Upstream
Published
2026-10-26T20:17:58Z
Modified
2026-10-27T17:00:07Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
Details

Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in potatosalad jose (erlang-jose) allows a remote attacker to exhaust a node's memory with a small crafted JWE token. The jose_jwe_zip:uncompress/2 function in src/jwe/jose_jwe_zip.erl decompresses the DEFLATE-compressed plaintext of a JWE that carries the optional zip: DEF header by calling zlib:inflate/2 on the entire attacker-controlled stream, with no bound on the output size or the inflation ratio. Raw DEFLATE reaches ratios around 1000:1 on highly repetitive input, so a few-kilobyte token inflates to hundreds of megabytes or gigabytes in a single call. Decompression runs automatically during decryption through jose_jwe:block_decrypt/2 (JOSE.JWE.block_decrypt/2 in Elixir), before the recipient can inspect or reject the payload. With the common asymmetric key-management algorithms (RSA-OAEP, ECDH-ES) an attacker needs only the recipient's public key to craft such a token, so no authentication or secret material is required. A single small token can exhaust the node's memory and crash the BEAM, denying service to all users. This issue affects jose: from 1.0.0 before 1.11.13.

References

Affected packages

Debian:12 / erlang-jose

Package

Name
erlang-jose
Purl
pkg:deb/debian/erlang-jose?arch=source&distro=bookworm

Affected ranges

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

Affected versions

1.*
1.11.5-1
1.11.6-1~bpo12+1
1.11.6-1
1.11.10-1~bpo12+1
1.11.10-1
1.11.12-1
1.11.12-1.1
1.11.12-2~bpo13+1
1.11.12-2
1.11.12-3~bpo13+1
1.11.12-3

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65627.json"

Debian:13 / erlang-jose

Package

Name
erlang-jose
Purl
pkg:deb/debian/erlang-jose?arch=source&distro=trixie

Affected ranges

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

Affected versions

1.*
1.11.10-1
1.11.12-1
1.11.12-1.1
1.11.12-2~bpo13+1
1.11.12-2
1.11.12-3~bpo13+1
1.11.12-3

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65627.json"

Debian:14 / erlang-jose

Package

Name
erlang-jose
Purl
pkg:deb/debian/erlang-jose?arch=source&distro=forky

Affected ranges

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

Affected versions

1.*
1.11.10-1
1.11.12-1
1.11.12-1.1
1.11.12-2~bpo13+1
1.11.12-2
1.11.12-3~bpo13+1
1.11.12-3

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65627.json"