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CVE-2026-29778

pyLoad: Arbitrary File Write via Path Traversal in edit_package()

No known exploitation. EPSS puts it in the 45th percentile. Fixed in 0.5.0b3.dev97.

CVSS 3.17.1HighEPSS percentile45th0.5% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix0.5.0b3.dev97Upgrade to this build

Published Updated Sources: CVE.org, NVD, GitHub

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • PyloadAffected: >= 0.5.0b3.dev13, < 0.5.0b3.dev97Upgrade to: not statedStated by: CVE record
  • PyPI pyload-ngAffected: ≥ 0.5.0b3.dev13, < 0.5.0b3.dev97Upgrade to: 0.5.0b3.dev97Stated by: GitHub advisory
  • Pyload-ng Project Pyload-ngAffected: ≥ 0.5.0b3.dev13, < 0.5.0b3.dev97Upgrade to: 0.5.0b3.dev97Stated by: NVD

Versions as the sources state them. Full version matrix after sign-in

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What it is

From the CVE record

pyLoad is a free and open-source download manager written in Python. From version 0.5.0b3.dev13 to 0.5.0b3.dev96, the edit_package() function implements insufficient sanitization for the pack_folder parameter. The current protection relies on a single-pass string replacement of "../", which can be bypassed using crafted recursive traversal sequences. This issue has been patched in version 0.5.0b3.dev97.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS45th
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

0.5% chance of exploitation activity in the next 30 days, which ranks it in the 45th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

5 events over 4 days, from the signal feeds we watch.

  1. Patch availablerecord updated
  2. Publishedweakness classified, att&ck mapped

Affected products

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

Scored 7.1 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required LowRequires basic user-level privileges
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality NoneNo confidentiality impact
  • Integrity HighTotal loss of integrity — attacker can modify any data in the component
  • Availability LowReduced performance or intermittent disruption of service

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

And 1 more reference. See all after sign-in

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