DEBIAN-CVE-2026-42784
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-42784
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-42784.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-42784
- Upstream
- CVE-2026-42784
- Published
- 2026-09-16T17:17:18Z
- Modified
- 2026-09-22T08:47:35Z
- Severity
-
- 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
A flaw was found in sequoia-openpgp. The library incorrectly infers key flags for older certificates when a key flags subpacket is missing, leading to a discrepancy in how key capabilities are viewed. This key flag confusion allows an attacker to bypass the back-signature check. Consequently, an attacker can illegitimately bind an arbitrary subkey to their own certificate and forge signatures, completely compromising cryptographic integrity.
- References
Affected packages
Debian:12 / rust-sequoia-openpgp
Package
- Name
- rust-sequoia-openpgp
- Purl
- pkg:deb/debian/rust-sequoia-openpgp?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Affected versions
1.*
1.12.0-2
1.13.0-1
1.16.0-1
1.16.0-2
1.16.0-3
1.16.1-1
1.16.1-2
1.17.0-1
1.17.0-2
1.18.0-1
1.19.0-1
1.20.0-1
1.20.0-2
1.21.0-1
1.21.1-1
1.21.1-2
1.21.2-1
1.21.2-2
1.22.0-1
1.22.0-2
2.*
2.0.0-1
2.0.0-2
2.0.0-3
2.0.0-4
2.0.0-5
2.1.0-1
2.1.0-2
2.1.0-3
2.2.0-1
2.2.0-2
2.3.0-1
2.4.1-1
2.4.1-2
Debian:13 / rust-sequoia-openpgp
Package
- Name
- rust-sequoia-openpgp
- Purl
- pkg:deb/debian/rust-sequoia-openpgp?arch=source&distro=trixie
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:14 / rust-sequoia-openpgp
Package
- Name
- rust-sequoia-openpgp
- Purl
- pkg:deb/debian/rust-sequoia-openpgp?arch=source&distro=forky