CVE-2026-33314 json
pyload-ng: Improper Authentication and Origin Validation Error
published 2026-03-19 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-20090 , GHSA-q485-cg9q-xq2r , PYSEC-2026-122
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 8%
- public exploits
- 0
- none known
Summary
pyLoad is a free and open-source download manager written in Python. Prior to version 0.5.0b3.dev97, a Host Header Spoofing vulnerability in the @local_check decorator allows unauthenticated external attackers to bypass local-only restrictions. This grants access to the Click'N'Load API endpoints, enabling attackers to remotely queue arbitrary downloads, leading to Server-Side Request Forgery (SSRF) and Denial of Service (DoS). This issue has been patched in version 0.5.0b3.dev97.
Patch / fix
- pypi pyload-ng 0.5.0b3.dev97
- pyload-ng_project pyload-ng 0.5.0b3.dev97
- pyload pyload 0.5.0b3.dev97
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/pyload/pyload/security/advisories/GHSA-q485-cg9q-xq2r referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L |
| OSV | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | pyload-ng | <0.5.0b3.dev97 |
0.5.0b3.dev97 |
Affected products
- pyload pyload
Classification
References
-
github.com
/pyload/pyload/security/advisories/GHSA-q485-cg9q-xq2r
web, exploit, vendor-advisory, evidence
-
nvd.nist.gov
/vuln/detail/CVE-2026-33314
advisory
-
github.com
/pyload/pyload
package
-
github.com
/pypa/advisory-database/tree/main/vulns/pyload-ng/PYSEC-2026-122.yaml
web
Sources
- CVE List CVE-2026-33314
- GitHub Advisory GHSA-q485-cg9q-xq2r
- NVD CVE-2026-33314
- OSV PYSEC-2026-122
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.