DEBIAN-CVE-2026-77358
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::shutdown_and_close 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.
DEBIAN-CVE-2026-77358
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-77358
cpp-httplib
Source reference: /affected/0/package/name
- Affected versions
- 0.11.4+ds-1
Source reference:
/affected/0/versions0.11.4+ds-1+deb12u1Source reference:
/affected/0/versions0.11.4+ds-2Source reference:
/affected/0/versions0.11.4+ds-3Source reference:
/affected/0/versions0.13.1+ds-1Source reference:
/affected/0/versions0.14.0+ds-1Source reference:
/affected/0/versions0.14.1+ds-1Source reference:
/affected/0/versions0.14.1+ds-2Source reference:
/affected/0/versions0.14.2+ds-1Source reference:
/affected/0/versions0.14.3+ds-1Source reference:
/affected/0/versions0.14.3+ds-1.1Source reference:
/affected/0/versions0.14.3+ds-1.1~exp1Source reference:
/affected/0/versions0.15.3+ds-1Source reference:
/affected/0/versions0.15.3+ds-2Source reference:
/affected/0/versions0.15.3+ds-3Source reference:
/affected/0/versions0.16.0+ds-1Source reference:
/affected/0/versions0.16.3+ds-1Source reference:
/affected/0/versions0.16.3+ds-2Source reference:
/affected/0/versions0.18.0+ds-1Source reference:
/affected/0/versions0.18.7-1Source reference:
/affected/0/versions0.20.1+ds-3Source reference:
/affected/0/versions0.25.0+ds-1Source reference:
/affected/0/versions0.26.0+ds-2Source reference:
/affected/0/versions0.41.0+ds-1Source reference:
/affected/0/versions0.41.0+ds-2Source reference:
/affected/0/versions0.41.0+ds-3Source reference:
/affected/0/versions0.41.0+ds-3~bpo13+1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
cpp-httplib
Source reference: /affected/1/package/name
- Affected versions
- 0.18.7-1
Source reference:
/affected/1/versions0.18.7-1+deb13u1Source reference:
/affected/1/versions0.20.1+ds-3Source reference:
/affected/1/versions0.25.0+ds-1Source reference:
/affected/1/versions0.26.0+ds-2Source reference:
/affected/1/versions0.41.0+ds-1Source reference:
/affected/1/versions0.41.0+ds-2Source reference:
/affected/1/versions0.41.0+ds-3Source reference:
/affected/1/versions0.41.0+ds-3~bpo13+1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
cpp-httplib
Source reference: /affected/2/package/name
- Affected versions
- 0.18.7-1
Source reference:
/affected/2/versions0.20.1+ds-3Source reference:
/affected/2/versions0.25.0+ds-1Source reference:
/affected/2/versions0.26.0+ds-2Source reference:
/affected/2/versions0.41.0+ds-1Source reference:
/affected/2/versions0.41.0+ds-2Source reference:
/affected/2/versions0.41.0+ds-3Source reference:
/affected/2/versions0.41.0+ds-3~bpo13+1Source reference:
/affected/2/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "cpp-httplib",
"purl": "pkg:deb/debian/cpp-httplib?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"0.11.4+ds-1",
"0.11.4+ds-1+deb12u1",
"0.11.4+ds-2",
"0.11.4+ds-3",
"0.13.1+ds-1",
"0.14.0+ds-1",
"0.14.1+ds-1",
"0.14.1+ds-2",
"0.14.2+ds-1",
"0.14.3+ds-1",
"0.14.3+ds-1.1",
"0.14.3+ds-1.1~exp1",
"0.15.3+ds-1",
"0.15.3+ds-2",
"0.15.3+ds-3",
"0.16.0+ds-1",
"0.16.3+ds-1",
"0.16.3+ds-2",
"0.18.0+ds-1",
"0.18.7-1",
"0.20.1+ds-3",
"0.25.0+ds-1",
"0.26.0+ds-2",
"0.41.0+ds-1",
"0.41.0+ds-2",
"0.41.0+ds-3",
"0.41.0+ds-3~bpo13+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-77358.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "cpp-httplib",
"purl": "pkg:deb/debian/cpp-httplib?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"0.18.7-1",
"0.18.7-1+deb13u1",
"0.20.1+ds-3",
"0.25.0+ds-1",
"0.26.0+ds-2",
"0.41.0+ds-1",
"0.41.0+ds-2",
"0.41.0+ds-3",
"0.41.0+ds-3~bpo13+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-77358.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "cpp-httplib",
"purl": "pkg:deb/debian/cpp-httplib?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"0.18.7-1",
"0.20.1+ds-3",
"0.25.0+ds-1",
"0.26.0+ds-2",
"0.41.0+ds-1",
"0.41.0+ds-2",
"0.41.0+ds-3",
"0.41.0+ds-3~bpo13+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-77358.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58336 · Revision 1
- Added to Heist Feed
- Publisher date