DEBIAN-CVE-2026-24122
Cosign provides code signing and transparency for containers and binaries. In versions 3.0.4 and below, an issuing certificate with a validity that expires before the leaf certificate will be considered valid during verification even if the provided timestamp would mean the issuing certificate should be considered expired. When verifying artifact signatures using a certificate, Cosign first verifies the certificate chain using the leaf certificate's "not before" timestamp and later checks expiry of the leaf certificate using either a signed timestamp provided by the Rekor transparency log or from a timestamp authority, or using the current time. The root and all issuing certificates are assumed to be valid during the leaf certificate's validity. There is no impact to users of the public Sigstore infrastructure. This may affect private deployments with customized PKIs. This issue has been fixed in version 3.0.5.
DEBIAN-CVE-2026-24122
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-2026-24122
cosign
Source reference: /affected/0/package/name
- Affected versions
- 2.5.0-2
Source reference:
/affected/0/versions2.6.2-1Source reference:
/affected/0/versions2.6.2-1~exp0Source reference:
/affected/0/versions2.6.3-1Source reference:
/affected/0/versions3.0.5-1~exp0Source reference:
/affected/0/versions3.0.6-1Source reference:
/affected/0/versions3.0.6-1~exp0Source reference:
/affected/0/versions3.1.0-1~exp0Source reference:
/affected/0/versions3.1.1-1Source reference:
/affected/0/versions3.1.1-1~exp0Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
cosign
Source reference: /affected/1/package/name
- Affected versions
- 2.5.0-2
Source reference:
/affected/1/versions2.6.2-1Source reference:
/affected/1/versions2.6.2-1~exp0Source reference:
/affected/1/versions2.6.3-1Source reference:
/affected/1/versions3.0.5-1~exp0Source reference:
/affected/1/versions3.0.6-1~exp0Source reference:
/affected/1/versions - Fixed versions
- 3.0.6-1
Source reference:
/affected/1/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": "cosign",
"purl": "pkg:deb/debian/cosign?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2.5.0-2",
"2.6.2-1",
"2.6.2-1~exp0",
"2.6.3-1",
"3.0.5-1~exp0",
"3.0.6-1",
"3.0.6-1~exp0",
"3.1.0-1~exp0",
"3.1.1-1",
"3.1.1-1~exp0"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-24122.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.6-1"
}
]
}
],
"package": {
"name": "cosign",
"purl": "pkg:deb/debian/cosign?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.5.0-2",
"2.6.2-1",
"2.6.2-1~exp0",
"2.6.3-1",
"3.0.5-1~exp0",
"3.0.6-1~exp0"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-24122.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #57490 · Revision 1
- Added to Heist Feed
- Publisher date