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CVE

CVE-2026-29778

pyLoad has an Arbitrary File Write via Path Traversal in edit_package()
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CVE

CVE-2026-29778

pyLoad has an Arbitrary File Write via Path Traversal in edit_package()

The editpackage() function implements insufficient sanitization for the packfolder 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.

Package Versions Affected

Package Version
patch Availability
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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
C
H
U
-

Related Resources

No items found.

References

https://github.com/pyload/pyload/security/advisories/GHSA-6px9-j4qr-xfjw, https://nvd.nist.gov/vuln/detail/CVE-2026-29778, https://github.com/pyload/pyload

Severity

7.1

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.1
EPSS Probability
0.00022%
EPSS Percentile
0.06189%
Introduced Version
0.5.0b3.dev13
Fix Available

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