CVE-2026-49147Public exploit

Terminal output manipulation via unsanitized filenames

Published Jul 8, 2026 · Updated Jul 8, 2026

Control-sequence injection in Andy Lester ack 3.10.0 and earlier allows attackers to manipulate terminal output via crafted filenames. App::Ack::show_types, file_loop_lL, and file_loop_c emit raw filename bytes without applying _safe_filename. A crafted basename must enter one of those output modes; cursor movement and recoloring can then spoof displayed results or alter downstream text.

CVSS severity7.5
High
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Control-sequence injection in Andy Lester ack 3.10.0 and earlier allows attackers to manipulate terminal output via crafted filenames. App::Ack::show_types, file_loop_lL, and file_loop_c emit raw filename bytes without applying _safe_filename. A crafted basename must enter one of those output modes; cursor movement and recoloring can then spoof displayed results or alter downstream text.

The record

CVE
CVE-2026-49147
Published
Jul 8, 2026
Updated
Jul 8, 2026
Vendor
Andy Lester
Product
ack
Classifications
CWE-150
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=3.10.0

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Andy Lester · ackversion=0 <=3.10.0

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-150Improper Neutralization of Escape, Meta, or Control Sequences

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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