CVE-2026-33509 json
pyload-ng: SETTINGS Permission Users Can Achieve Remote Code Execution via Unrestricted Reconnect Script Configuration
published 2026-03-20 7 mo ago modified 2026-07-13 3 mo ago also EUVD-2026-20072 , GHSA-r7mc-x6x7-cqxx , PYSEC-2026-2996
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 46%
- public exploits
- 0
- none known
Summary
pyLoad is a free and open-source download manager written in Python. From version 0.4.0 to before version 0.5.0b3.dev97, the set_config_value() API endpoint allows users with the non-admin SETTINGS permission to modify any configuration option without restriction. The reconnect.script config option controls a file path that is passed directly to subprocess.run() in the thread manager's reconnect logic. A SETTINGS user can set this to any executable file on the system, achieving Remote Code Execution. The only validation in set_config_value() is a hardcoded check for general.storage_folder — all other security-critical settings including reconnect.script are writable without any allowlist or path restriction. This issue has been patched in version 0.5.0b3.dev97.
Patch / fix
- pyload-ng_project pyload-ng 0.5.0b3.dev97
- pyload pyload 0.5.0b3.dev97
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 7 mo ago
Exploit prediction
0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/pyload/pyload/security/advisories/GHSA-r7mc-x6x7-cqxx referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| OSV | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | pyload-ng | >=0.4.0, <=0.5.0b3.dev96 |
no fix listed |
Affected products
- pyload pyload
Classification
- Weakness
-
- CWE-269 Improper Privilege Management
References
-
github.com
/pyload/pyload/commit/f5e284fcdfeaf08436bb03e5fcf697aaac659d8b
web
-
github.com
/pyload/pyload/security/advisories/GHSA-r7mc-x6x7-cqxx
web, exploit, mitigation, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-33509
advisory
-
github.com
/pyload/pyload
package
-
pypi.org
/project/pyload-ng
package
-
github.com
/advisories/GHSA-r7mc-x6x7-cqxx
advisory
Sources
- CVE List CVE-2026-33509
- GitHub Advisory GHSA-r7mc-x6x7-cqxx
- NVD CVE-2026-33509
- OSV PYSEC-2026-2996
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.