UBUNTU-CVE-2026-28799

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Source
https://ubuntu.com/security/CVE-2026-28799
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-28799.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-28799
Upstream
Published
2026-03-06T07:16:00Z
Modified
2026-04-22T16:28:22.915906Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • 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
  • Ubuntu - medium
Summary
[none]
Details

PJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, a heap use-after-free vulnerability exists in PJSIP's event subscription framework (evsub.c) that is triggered during presence unsubscription (SUBSCRIBE with Expires=0). This issue has been patched in version 2.17.

References

Affected packages

Ubuntu:Pro:16.04:LTS / pjproject

Package

Name
pjproject
Purl
pkg:deb/ubuntu/pjproject@2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial

Affected ranges

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

Affected versions

2.*
2.1.0.0.ast20130823-1
2.1.0.0.ast20130823-1+deb8u1build0.16.04.1
2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1",
            "binary_name": "libpj2"
        },
        {
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1",
            "binary_name": "libpjlib-util2"
        },
        {
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1",
            "binary_name": "libpjmedia-audiodev2"
        },
        {
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1",
            "binary_name": "libpjmedia-codec2"
        },
        {
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1",
            "binary_name": "libpjmedia-videodev2"
        },
        {
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1",
            "binary_name": "libpjmedia2"
        },
        {
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1",
            "binary_name": "libpjnath2"
        },
        {
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1",
            "binary_name": "libpjsip-simple2"
        },
        {
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1",
            "binary_name": "libpjsip-ua2"
        },
        {
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1",
            "binary_name": "libpjsip2"
        },
        {
            "binary_version": "2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1",
            "binary_name": "libpjsua2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-28799.json"

Ubuntu:Pro:18.04:LTS / pjproject

Package

Name
pjproject
Purl
pkg:deb/ubuntu/pjproject@2.7.2~dfsg-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic

Affected ranges

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

Affected versions

2.*
2.6~dfsg-2
2.7~dfsg-1
2.7.1~dfsg-1
2.7.1~dfsg-1build1
2.7.2~dfsg-1
2.7.2~dfsg-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1",
            "binary_name": "libpj2"
        },
        {
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1",
            "binary_name": "libpjlib-util2"
        },
        {
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1",
            "binary_name": "libpjmedia-audiodev2"
        },
        {
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1",
            "binary_name": "libpjmedia-codec2"
        },
        {
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1",
            "binary_name": "libpjmedia-videodev2"
        },
        {
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1",
            "binary_name": "libpjmedia2"
        },
        {
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1",
            "binary_name": "libpjnath2"
        },
        {
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1",
            "binary_name": "libpjsip-simple2"
        },
        {
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1",
            "binary_name": "libpjsip-ua2"
        },
        {
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1",
            "binary_name": "libpjsip2"
        },
        {
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1",
            "binary_name": "libpjsua2"
        },
        {
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1",
            "binary_name": "libpjsua2-2v5"
        },
        {
            "binary_version": "2.7.2~dfsg-1ubuntu0.1~esm1",
            "binary_name": "python-pjproject"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-28799.json"