ash-project usage_rules up to 1.2.7 Formatter Mix.Tasks.UsageRules.SearchDocs neutralization

Summaryinfo

A vulnerability categorized as critical has been discovered in ash-project usage_rules up to 1.2.7. Affected by this issue is the function Mix.Tasks.UsageRules.SearchDocs of the component Formatter. The manipulation results in neutralization. This vulnerability was named CVE-2026-82710. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in ash-project usage_rules up to 1.2.7. Affected is the function Mix.Tasks.UsageRules.SearchDocs of the component Formatter. The manipulation with an unknown input leads to a neutralization vulnerability. CWE is classifying the issue as CWE-707. The product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties are met before being read from an upstream component or sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in ash-project usage_rules allows a malicious package publisher to inject terminal control sequences into the output of mix usage_rules.search_docs. mix usage_rules.search_docs searches Hex documentation through search.hexdocs.pm, which indexes the documentation of every published package, and prints the matching results (title, package, type, doc reference, and highlighted snippets) to the terminal. The formatter in Mix.Tasks.UsageRules.SearchDocs interpolated those publisher-controlled fields verbatim, neutralizing no terminal control characters; the only transform it applied adds escape sequences rather than removing them. A malicious package can embed ANSI terminal escape sequences (cursor movement, line erase, carriage returns, OSC 52 clipboard writes) in its indexed documentation, so when a developer runs a search that surfaces those docs the sequences reach the terminal unchanged — forging the displayed hexdocs URL or a suggested command, hiding text, or writing to the clipboard. No authentication or privileged position is required; only publishing a package. This issue affects usage_rules: from 0.1.18 before 1.2.8.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-82710 since 09/07/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

Upgrading to version 1.2.8 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Project Management Software

Vendor

• ash-project

Name

• usage_rules

Version

• 1.2.0
• 1.2.1
• 1.2.2
• 1.2.3
• 1.2.4
• 1.2.5
• 1.2.6
• 1.2.7

Website

• Product: https://github.com/ash-project/usage_rules/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Once again VulDB remains the best source for vulnerability data.

Discussion