Untrusted search path in PETDANCE App::Ack
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution, Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-426, CWE-73 and the CVSS impact.
Summary
App::Ack versions through 3.10.0 for Perl read arbitrary files via --files-from in a project .ackrc. ack searches up the directory hierarchy from the current directory for a project .ackrc and loads its options. The project-source option blocklist in App::Ack::ConfigLoader does not include --files-from, so a project .ackrc can set it to a path whose listed files ack then reads and searches. Version 3.10.0 added --follow to the blocklist; --files-from remains accepted. A project .ackrc committed to an untrusted repository can make ack read files outside the project and print their matching lines.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-49145
- 2026-10-03 Alias added: GHSA-c2rv-g977-2fxr
References
More PETDANCE vulnerabilities
- TI-2026-36359 Resource allocation without limits in PETDANCE App::Ack CVSS 3.1HIGH 7.5
- TI-2026-36360 App::Ack versions through 3.10.0 for Perl print unsanitised terminal escape sequences… CVSS 3.1HIGH 7.5
Sources
- CVE-2026-49145 · CVE Program
- CVE-2026-49145 · NVD
- FIRST EPSS
- GHSA-c2rv-g977-2fxr · GitHub Advisory Database · CC BY 4.0
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