CVE-2026-29778
pyLoad: Arbitrary File Write via Path Traversal in edit_package()
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
pyLoad: Arbitrary File Write via Path Traversal in edit_package()
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.
- Record
CVE-2026-29778- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L - Weakness
- CWE-23
- Updated
- 2026-11-02
EUVDEUVD-2026-10162
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.
- Record
EUVD-2026-10162- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-6px9-j4qr-xfjw
pyLoad has an Arbitrary File Write via Path Traversal in edit_package()
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.
Exploitation
An authenticated user with MODIFY permission can bypass the sanitization by submitting a payload such as:
pack_folder=..././..././..././tmp
After the single-pass replacement, this becomes:
../../../tmp
Because the traversal sequences are not properly validated, the resulting normalized path escapes the intended storage directory and writes files to /tmp or other locations.
- Record
GHSA-6px9-j4qr-xfjw- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L - Weakness
- CWE-23
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-29778- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-23
- Updated
- 2026-11-02
OSVGHSA-6px9-j4qr-xfjw
pyLoad has an Arbitrary File Write via Path Traversal in edit_package()
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.
Exploitation
An authenticated user with MODIFY permission can bypass the sanitization by submitting a payload such as:
pack_folder=..././..././..././tmp
After the single-pass replacement, this becomes:
../../../tmp
Because the traversal sequences are not properly validated, the resulting normalized path escapes the intended storage directory and writes files to /tmp or other locations.
- Record
GHSA-6px9-j4qr-xfjw- CVSS 3.1
- 7.1 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L - Weakness
- CWE-23
- Updated
- 2026-11-02
OSVPYSEC-2026-121
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.
- Record
PYSEC-2026-121- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
pyload-ngPyPI |
0.5.0b3.dev13 to 0.5.0b3.dev96 | 0.5.0b3.dev97 |
pyload-ngPyPI |
0.5.0b3.dev13 up to 0.5.0b3.dev97, plus listed versions 0.5.0b3.dev140.5.0b3.dev170.5.0b3.dev180.5.0b3.dev190.5.0b3.dev20 Show 45 moreShow less0.5.0b3.dev210.5.0b3.dev220.5.0b3.dev240.5.0b3.dev260.5.0b3.dev270.5.0b3.dev280.5.0b3.dev290.5.0b3.dev300.5.0b3.dev310.5.0b3.dev320.5.0b3.dev330.5.0b3.dev340.5.0b3.dev350.5.0b3.dev380.5.0b3.dev390.5.0b3.dev400.5.0b3.dev410.5.0b3.dev420.5.0b3.dev430.5.0b3.dev440.5.0b3.dev450.5.0b3.dev460.5.0b3.dev470.5.0b3.dev480.5.0b3.dev490.5.0b3.dev500.5.0b3.dev510.5.0b3.dev520.5.0b3.dev530.5.0b3.dev540.5.0b3.dev570.5.0b3.dev600.5.0b3.dev620.5.0b3.dev640.5.0b3.dev650.5.0b3.dev660.5.0b3.dev670.5.0b3.dev680.5.0b3.dev690.5.0b3.dev700.5.0b3.dev710.5.0b3.dev720.5.0b3.dev730.5.0b3.dev740.5.0b3.dev75 |
0.5.0b3.dev97 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-29778 is a high vulnerability (CVSS 7.1) in Pyload, published March 5, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.57%, the 47th percentile. Fixed in pyload-ng 0.5.0b3.dev97.
References
Left out here: 18 versions. The JSON record has them.