Memory Exhaustion Vulnerability in App::Ack by Beyondgrep
CVE-2026-49146

7.5HIGH

Key Information:

Vendor

Petdance

Status
App::ack
Vendor
CVE Published:
8 July 2026

What is CVE-2026-49146?

The App::Ack tool, effective for searching files, is subject to a vulnerability where an improperly configured .ackrc file can lead to memory exhaustion. This occurs when options such as --before-context and --context are set to excessively high values, enabling attackers to allocate vast amounts of memory and potentially crash the application. As ack searches the directory hierarchy for .ackrc files, a project using an untrusted .ackrc can trigger an out-of-memory condition, making it crucial for users to ensure proper file configurations and update to version 3.10.0 or later to mitigate this risk.

Affected Version(s)

App::Ack 0 < 3.10.0

References

https://github.com/beyondgrep/ack3/commit/45ff5fe77dbd96f...
patch
https://metacpan.org/release/PETDANCE/ack-v3.10.0/source/...
release-notes

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Michał Majchrowicz (AFINE)
Marcin Wyczechowski (AFINE)
.