UBUNTU-CVE-2026-32144

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Source
https://ubuntu.com/security/CVE-2026-32144
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32144.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-32144
Upstream
Downstream
Related
Published
2026-04-07T13:16:00Z
Modified
2026-10-08T19:47:08Z
Severity
  • 7.6 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N CVSS Calculator
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Improper Certificate Validation vulnerability in Erlang OTP public_key (pubkey_ocsp module) allows OCSP designated-responder authorization bypass via missing signature verification. The OCSP response validation in public_key:pkix_ocsp_validate/5 does not verify that a CA-designated responder certificate was cryptographically signed by the issuing CA. Instead, it only checks that the responder certificate's issuer name matches the CA's subject name and that the certificate has the OCSPSigning extended key usage. An attacker who can intercept or control OCSP responses can create a self-signed certificate with a matching issuer name and the OCSPSigning EKU, and use it to forge OCSP responses that mark revoked certificates as valid. This affects SSL/TLS clients using OCSP stapling, which may accept connections to servers with revoked certificates, potentially transmitting sensitive data to compromised servers. Applications using the public_key:pkix_ocsp_validate/5 API directly are also affected, with impact depending on usage context. This vulnerability is associated with program files lib/public_key/src/pubkey_ocsp.erl and program routines pubkey_ocsp:is_authorized_responder/3. This issue affects OTP from OTP 27.0 before OTP 28.4.2 and OTP 27.3.4.10, corresponding to public_key from 1.16 before 1.20.3 and 1.17.1.2, and ssl from 11.2 before 11.5.4 and 11.2.12.7.

References

Affected packages

Ubuntu:25.10 / erlang

Package

Name
erlang
Purl
pkg:deb/ubuntu/erlang?arch=source&distro=questing

Affected ranges

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

Affected versions

1:27.*
1:27.3+dfsg-1ubuntu1
1:27.3+dfsg-1ubuntu1.1
1:27.3.4.1+dfsg-1
1:27.3.4.1+dfsg-1build1
1:27.3.4.1+dfsg-1ubuntu0.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "erlang",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-asn1",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-base",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-common-test",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-crypto",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-debugger",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-dialyzer",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-diameter",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-edoc",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-eldap",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-et",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-eunit",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-examples",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-ftp",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-inets",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-jinterface",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-megaco",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-mnesia",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-mode",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-nox",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-observer",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-odbc",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-os-mon",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-parsetools",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-public-key",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-reltool",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-runtime-tools",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-snmp",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-src",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-ssh",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-ssl",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-syntax-tools",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-tftp",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-tools",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-wx",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-x11",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name":  "erlang-xmerl",
            "binary_version":  "1:27.3.4.1+dfsg-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32144.json"

Ubuntu:26.04:LTS / erlang

Package

Name
erlang
Purl
pkg:deb/ubuntu/erlang?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:27.3.4.6+dfsg-1ubuntu0.2

Affected versions

1:27.*
1:27.3.4.1+dfsg-1build1
1:27.3.4.3+dfsg-1
1:27.3.4.4+dfsg-1
1:27.3.4.6+dfsg-1
1:27.3.4.6+dfsg-1ubuntu0.1

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "erlang",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-asn1",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-base",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-common-test",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-crypto",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-debugger",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-dialyzer",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-diameter",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-edoc",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-eldap",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-et",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-eunit",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-examples",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-ftp",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-inets",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-jinterface",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-megaco",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-mnesia",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-mode",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-nox",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-observer",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-odbc",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-os-mon",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-parsetools",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-public-key",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-reltool",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-runtime-tools",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-snmp",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-src",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-ssh",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-ssl",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-syntax-tools",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-tftp",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-tools",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-wx",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-x11",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        },
        {
            "binary_name":  "erlang-xmerl",
            "binary_version":  "1:27.3.4.6+dfsg-1ubuntu0.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32144.json"