CVE-2026-62268
What it is
borgbackup is an opensource, deduplicating archiver with compression and authenticated encryption. Prior to 1.4.5 and 2.0.0b22, extracting a malicious archive can follow a symlinked parent path or resolve embedded dot-dot path components and delete or overwrite files outside the extraction directory. A crafted slave hardlink can also use an attacker-controlled hardlink source outside the extraction directory and hard-link that file into the restored tree, disclosing its contents. Creating the malicious archive requires repository access and, for encrypted or authenticated repositories, the Borg key and passphrase; a victim must then extract the archive. This issue is fixed in versions 1.4.5 and 2.0.0b22.
At a glance
- Exploitability
- Can be exploited locally on the machine with an admin-level account, but needs a user to act. High risk of data exposure, data tampering.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 5.3 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Weakness
- CWE-59
- Record status
- Received
Attack profile CVSS 4.0 · 5.3
- Attack vector
- Local
- Complexity
- Low
- Attack requirements
- Present
- Privileges needed
- High
- User interaction
- Active
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Raw vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-62268.md and follow it. Check whether this project is affected by CVE-2026-62268. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/borgbackup/borg/commit/0ac568e290518c3bbe781459978720dde7fab224
- https://github.com/borgbackup/borg/commit/141888f2fabcd57a300547c2aa63212cb213924d
- https://github.com/borgbackup/borg/commit/2d632531028b09da8ab5d1450f89bebcc205d640
- https://github.com/borgbackup/borg/commit/3e9ed6d1ad6d3531b39c07b8ef3ecf41fce4437f
- https://github.com/borgbackup/borg/commit/4f37fdfed10b50559a0dd333b0d5581c642af329
- https://github.com/borgbackup/borg/commit/d907f2cb57337041c4fa55ca4682895535e5076b
- https://github.com/borgbackup/borg/releases/tag/1.4.5
- https://github.com/borgbackup/borg/releases/tag/2.0.0b22
- https://github.com/borgbackup/borg/security/advisories/GHSA-gfp8-w835-v44j
References
- https://github.com/borgbackup/borg/commit/0ac568e290518c3bbe781459978720dde7fab224
- https://github.com/borgbackup/borg/commit/141888f2fabcd57a300547c2aa63212cb213924d
- https://github.com/borgbackup/borg/commit/2d632531028b09da8ab5d1450f89bebcc205d640
- https://github.com/borgbackup/borg/commit/3e9ed6d1ad6d3531b39c07b8ef3ecf41fce4437f
- https://github.com/borgbackup/borg/commit/4f37fdfed10b50559a0dd333b0d5581c642af329
- https://github.com/borgbackup/borg/commit/d907f2cb57337041c4fa55ca4682895535e5076b
- https://github.com/borgbackup/borg/releases/tag/1.4.5
- https://github.com/borgbackup/borg/releases/tag/2.0.0b22
- https://github.com/borgbackup/borg/security/advisories/GHSA-gfp8-w835-v44j