Canonical LXD up to 5.21.3/6.4 Instance Snapshot special elements used in a template engine

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Canonical LXD up to 5.21.3/6.4. This impacts an unknown function of the component Instance Snapshot Handler. Such manipulation leads to improper neutralization of special elements used in a template engine. This vulnerability is referenced as CVE-2025-54287. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Canonical LXD up to 5.21.3/6.4. Affected by this issue is some unknown functionality of the component Instance Snapshot Handler. The manipulation with an unknown input leads to a improper neutralization of special elements used in a template engine vulnerability. Using CWE to declare the problem leads to CWE-1336. The product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine. Impacted is confidentiality. CVE summarizes:

Template Injection in instance snapshot creation component in Canonical LXD (>= 4.0) allows an attacker with instance configuration permissions to read arbitrary files on the host system via specially crafted snapshot pattern templates using the Pongo2 template engine.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-54287 since 07/18/2025. The exploitation is known to be easy. The attack may be launched remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1221.

The vulnerability scanner Nessus provides a plugin with the ID 270713 (Debian dsa-6027 : golang-github-lxc-incus-dev - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.21.4 or 6.5 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (270713) and EUVD (EUVD-2025-32636). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper neutralization of special elements used in a template engine
CWE: CWE-1336 / CWE-791 / CWE-790
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 270713
Nessus Name: Debian dsa-6027 : golang-github-lxc-incus-dev - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: LXD 5.21.4/6.5

Timelineinfo

07/18/2025 CVE reserved
10/02/2025 +76 days Advisory disclosed
10/02/2025 +0 days VulDB entry created
01/17/2026 +107 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2025-54287 (🔒)
GCVE (CVE): GCVE-0-2025-54287
GCVE (VulDB): GCVE-100-326720
EUVD: 🔒

Entryinfo

Created: 10/02/2025 12:07
Updated: 01/17/2026 03:34
Changes: 10/02/2025 12:07 (66), 10/18/2025 05:19 (2), 10/23/2025 05:26 (11), 01/17/2026 03:34 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!