CVE-2026-91094
dpkg Directory Traversal Vulnerability
Description
A directory traversal bug was discovered when unpacking 3.0 (quilt) source packages, where the packaging tarball could contain the quilt database directory (.pc) with attacker controlled symlinks, where that in combination with patches that would fail to apply, could be used to make the code used to restore the backup files to either modify or remove the files pointed to by the attacker controlled symlinks.
INFO
Published Date :
Nov. 13, 2026, 2:18 p.m.
Last Modified :
Nov. 13, 2026, 2:18 p.m.
Remotely Exploit :
No
Source :
[email protected]
Solution
- Validate symlinks during package unpacking.
- Sanitize paths during patch application.
- Update package handling logic.
- Review patch application process.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-91094.
| URL | Resource |
|---|---|
| https://git.dpkg.org/cgit/dpkg/dpkg.git/commit/?id=2a31760bc2a968878700476c1de5b8ea7809e460 | |
| https://git.dpkg.org/cgit/dpkg/dpkg.git/commit/?id=50fb8e7fe20cee0d5b14000c32ca8c31f3bf0574 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-91094 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-91094
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-91094 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-91094 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Nov. 13, 2026
Action Type Old Value New Value Added Description A directory traversal bug was discovered when unpacking 3.0 (quilt) source packages, where the packaging tarball could contain the quilt database directory (.pc) with attacker controlled symlinks, where that in combination with patches that would fail to apply, could be used to make the code used to restore the backup files to either modify or remove the files pointed to by the attacker controlled symlinks. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/91xxx/CVE-2026-91094.json">CVE-2026-91094</a> Added Reference https://git.dpkg.org/cgit/dpkg/dpkg.git/commit/?id=2a31760bc2a968878700476c1de5b8ea7809e460 Added Reference https://git.dpkg.org/cgit/dpkg/dpkg.git/commit/?id=50fb8e7fe20cee0d5b14000c32ca8c31f3bf0574