borgbackup vulnerabilities

UBUNTU-CVE-2026-62268

[Unknown description]

Archive spoofing vulnerability in borgbackup

borgbackup is an opensource, deduplicating archiver with compression and authenticated encryption. A flaw in the cryptographic authentication scheme in borgbackup allowed an attacker to fake archives and potentially indirectly cause backup data loss in the repository. The attack requires an attacker to be able to: 1. insert files (with no additional headers) into backups and 2. gain write access to the repository. This vulnerability does not disclose plaintext to the attacker, nor does it affect the authenticity of existing archives. Creating plausible fake archives may be feasible for empty or small archives, but is unlikely for large archiv

CVE-2017-15914

Incorrect implementation of access controls allows remote users to override repository restrictions in Borg servers 1.1.x before 1.1.3.

• Update to 1.1.3-1

CVE-2016-10100

Borg (aka BorgBackup) before 1.0.9 has a flaw in the way duplicate archive names were processed during manifest recovery, potentially allowing an attacker to overwrite an archive.

• Update to 1.0.9-1

CVE-2016-10099

Borg (aka BorgBackup) before 1.0.9 has a flaw in the cryptographic protocol used to authenticate the manifest (list of archives), potentially allowing an attacker to spoof the list of archives.

• Update to 1.0.9-1