UBUNTU-CVE-2026-77358

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Source
https://ubuntu.com/security/CVE-2026-77358
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-77358.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-77358
Upstream
Published
2026-08-28T00:18:00Z
Modified
2026-09-02T16:27:47Z
Severity
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

cpp-httplib is a C++ header-only HTTP/HTTPS library. In versions 0.33.0 through 0.50.0, the TLS-enabled WebSocket client frees the TLS session before closing the WebSocket that still uses it, producing a use-after-free. In WebSocketClient::shutdownandclose the SSL object is freed and the pointer cleared, but the subsequent WebSocket close still sends a close frame through the SSL socket stream, which holds a raw copy of the now-dangling session pointer and reads from and writes to the freed memory. The same freed-then-used ordering is reachable through the client's destructor and its connect path, so ordinary teardown of a secure WebSocket connection triggers the defect. This issue is fixed in version 0.50.1.

References

Affected packages

Ubuntu:Pro:22.04:LTS / cpp-httplib

Package

Name
cpp-httplib
Purl
pkg:deb/ubuntu/cpp-httplib?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

0.*
0.9.9+ds-1
0.9.10+ds-1
0.10.1+ds-1
0.10.2+ds-1
0.10.3+ds-1
0.10.3+ds-1ubuntu0.1~esm1
0.10.3+ds-1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.10.3+ds-1ubuntu0.1~esm2",
            "binary_name": "libcpp-httplib0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-77358.json"

Ubuntu:Pro:24.04:LTS / cpp-httplib

Package

Name
cpp-httplib
Purl
pkg:deb/ubuntu/cpp-httplib?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

0.*
0.13.1+ds-1ubuntu1
0.14.3+ds-1
0.14.3+ds-1.1
0.14.3+ds-1.1build1
0.14.3+ds-1.1build2
0.14.3+ds-1.1ubuntu0.1~esm1
0.14.3+ds-1.1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.14.3+ds-1.1ubuntu0.1~esm2",
            "binary_name": "libcpp-httplib0.14t64"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-77358.json"

Ubuntu:Pro:26.04:LTS / cpp-httplib

Package

Name
cpp-httplib
Purl
pkg:deb/ubuntu/cpp-httplib?arch=source&distro=esm-apps%2Fresolute

Affected ranges

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

Affected versions

0.*
0.18.7-1
0.26.0+ds-2ubuntu2
0.26.0+ds-2ubuntu3
0.26.0+ds-2ubuntu3+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.26.0+ds-2ubuntu3+esm1",
            "binary_name": "libcpp-httplib0.26"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-77358.json"