Rust sequoia openpgp: [openpgp: Don't imply missing key flags from key type] (CVE-2026-42783)
Description
A vulnerability in rust-sequoia-openpgp where missing key flags are incorrectly implied from the key type. This affects multiple specific versions of the rust-sequoia-openpgp library.
Affected software
pkg:deb/ubuntu/rust-sequoia-openpgp?arch=source&distro=jammypkg:deb/ubuntu/rust-sequoia-openpgp?arch=source&distro=noblepkg:deb/ubuntu/rust-sequoia-openpgp?arch=source&distro=questingpkg:deb/ubuntu/rust-sequoia-openpgp?arch=source&distro=stonkingpkg:deb/ubuntu/rust-sequoia-openpgp?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability identified as CVE-2026-42783 in rust-sequoia-openpgp involves the incorrect assumption of missing key flags based on the key type. This means that the software may treat keys without explicit flags as if they had certain flags implied by their type, potentially leading to incorrect cryptographic behavior or trust assumptions. The issue affects multiple discrete versions of the rust-sequoia-openpgp library as explicitly listed.
Potential Impact
The impact is medium severity, indicating that the vulnerability could lead to incorrect handling of OpenPGP keys, which might affect cryptographic operations or security guarantees relying on key flags. However, no known exploits in the wild have been reported, and no CVSS score is provided.
Mitigation Recommendations
No patch or remediation information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance before taking action.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-42783
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:25.10","Ubuntu:26.10","Ubuntu:26.04:LTS"]
Threat ID: 6ad3f6802cdf04f6566671d8
Added to database: 10/17/2026, 22:28:16 UTC
Last enriched: 10/18/2026, 01:38:25 UTC
Last updated: 10/18/2026, 01:38:25 UTC
Views: 6
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