External risk intelligence

Pandora TAR Archive Path Traversal Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 10.0)

CVE-2026-74764

The vulnerability involves processing TAR archives within a worker process. While such functionality can be exposed via internet-facing file upload features, archive extraction is often performed in internal, asynchronous, or backend systems rather than directly on the public edge, making internet reachability dependent on the specific deployment context of the application.

Path Traversal

Halo Surface Signal: 3 out of 5 — possibly public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A vulnerability in Pandora's archive handling could allow an attacker to write files outside their intended location, potentially leading to application compromise or denial of service.

  • A flaw lets malicious archives overwrite system files.
  • This could lead to unauthorized control or service disruption.
  • Confirm relevance and assess potential impact.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by submitting a specially crafted TAR archive. If Pandora processes this archive without proper validation, the attacker could trick the system into writing files outside the intended directory. This could lead to the overwriting of important files, potentially allowing the attacker to execute arbitrary code or disrupt the application's operation.

  • Attacker submits a malicious TAR archive.
  • Pandora extracts archive members without filtering.
  • Risk of arbitrary code execution or denial of service.

Live Threat

Current exploitation, exposure, and threat context

Pandora's TAR archive extraction process could allow an attacker to write files outside designated directories. This occurs when processing a specially crafted TAR archive that uses paths like `../` or absolute paths. When supported by the advisory, this may lead to the overwriting of files accessible to the Pandora worker process.

  • System files and worker process data.
  • Malicious TAR archive uploaded by an attacker.
  • Potential application compromise or denial of service.

Operational Fix

Recommended remediation, mitigation, and detection steps

The application owners and platform teams are likely responsible for addressing this path traversal vulnerability in Pandora. The first practical step is to identify all instances of Pandora, determine their reachability and criticality, and then confirm the accountable owner for remediation planning based on risk.

  • Application owners should prioritize and own.
  • Verify Pandora's reachability and criticality.
  • Plan remediation based on identified risks.

Supplementary metadata

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

Frequently asked questions

What is Pandora software?

Pandora is a data processing application that utilizes a worker process to handle file operations, including the extraction of TAR archives. It is commonly used for analyzing or managing collections of data submitted to the system, where it must unpack compressed files to access their contents.

How does path traversal work in CVE-2026-74764?

This vulnerability falls under the path traversal weakness category. It occurs because Pandora passes file paths from a submitted archive directly to the system's extraction tool without checking them. An attacker can include special sequences like '..' or absolute paths in the archive, effectively instructing the software to save files into directories outside the intended destination, potentially overwriting sensitive system or application files.

Do I need to submit a file to trigger this vulnerability?

Yes, an attacker must successfully submit a specially crafted TAR archive to the application. The vulnerability is not triggered by simply interacting with the application's interface; it specifically requires the system to process a malicious archive where the filenames themselves contain the deceptive paths intended to escape the extraction directory.

Is my instance of Pandora at risk?

According to Halo Surface Signal, risk depends on how your deployment handles file uploads. While the underlying flaw is serious, the vulnerability only poses an immediate threat if your specific configuration allows untrusted users to upload and trigger the processing of TAR archives. If your system performs these extractions in an isolated, internal backend process that does not accept external input, the likelihood of exploitation is reduced compared to an internet-facing file upload feature.

When should I prioritize fixing this flaw?

You should prioritize this by first identifying every location where Pandora is running in your environment. Evaluate whether these instances process archives from untrusted sources and determine who owns each deployment. Once you have a clear map of your assets and their connectivity, coordinate with the responsible application teams to update the system, as the fix involves enforcing strict sanitization filters during the archive extraction process.

References