DEBIAN-CVE-2026-72888
Net::OAuth versions before 0.32 for Perl allow memory exhaustion via unbounded caching of failed module loads in smart_require. smart_require stores results in a process-global hash with no bound and no eviction, and keeps an entry for every class name it is asked about, including names that failed to load, because the return value of the failed eval is stored before the error is checked. The key comes off the wire on the server side: _signature_method_class builds the class name from the signature_method parameter of the incoming message, and verify resolves it before any signature is checked. A remote client chooses both how many entries are created and how long each key is. In a persistent server the hash grows for the life of the worker process until it exhausts memory. Header size limits bound the key length on the Authorization header path, but not on a POST body.
DEBIAN-CVE-2026-72888
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-2026-72888
libnet-oauth-perl
Source reference: /affected/0/package/name
- Affected versions
- 0.28-4
Source reference:
/affected/0/versions0.30-1Source reference:
/affected/0/versions0.31-1Source reference:
/affected/0/versions0.31-2Source reference:
/affected/0/versions0.32-1Source reference:
/affected/0/versions0.33-1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
libnet-oauth-perl
Source reference: /affected/1/package/name
- Affected versions
- 0.31-1
Source reference:
/affected/1/versions0.31-2Source reference:
/affected/1/versions0.32-1Source reference:
/affected/1/versions0.33-1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
libnet-oauth-perl
Source reference: /affected/2/package/name
- Affected versions
- 0.31-1
Source reference:
/affected/2/versions0.31-2Source reference:
/affected/2/versions - Fixed versions
- 0.32-1
Source reference:
/affected/2/ranges - 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": "libnet-oauth-perl",
"purl": "pkg:deb/debian/libnet-oauth-perl?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"0.28-4",
"0.30-1",
"0.31-1",
"0.31-2",
"0.32-1",
"0.33-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-72888.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "libnet-oauth-perl",
"purl": "pkg:deb/debian/libnet-oauth-perl?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"0.31-1",
"0.31-2",
"0.32-1",
"0.33-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-72888.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.32-1"
}
]
}
],
"package": {
"name": "libnet-oauth-perl",
"purl": "pkg:deb/debian/libnet-oauth-perl?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"0.31-1",
"0.31-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-72888.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #58174 · Revision 1
- Added to Heist Feed
- Publisher date