How severe is CVE-2026-35187?

CVE-2026-35187 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-35187 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35187?

CVE-2026-35187 affects Pyload-ng Project Pyload-ng. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35187?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-35187 have an EU (EUVD) identifier?

Yes. CVE-2026-35187 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19470.

When was CVE-2026-35187 published?

CVE-2026-35187 was published on 2026-04-06 and last updated on 2026-06-17.

CVE-2026-35187

CVE-2026-35187 is a high-severity vulnerability in Pyload-ng Project Pyload-ng with a CVSS 3.x base score of 7.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: High (CVSS 3.x base score 7.7)
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-19470
Weakness: CWE-918
Affected product: Pyload-ng Project Pyload-ng
Published: 2026-04-06
Last modified: 2026-06-17

Description

pyLoad is a free and open-source download manager written in Python. In 0.5.0b3.dev96 and earlier, the parse_urls API function in src/pyload/core/api/__init__.py fetches arbitrary URLs server-side via get_url(url) (pycurl) without any URL validation, protocol restriction, or IP blacklist. An authenticated user with ADD permission can make HTTP/HTTPS requests to internal network resources and cloud metadata endpoints, read local files via file:// protocol (pycurl reads the file server-side), interact with internal services via gopher:// and dict:// protocols, and enumerate file existence via error-based oracle (error 37 vs empty response).

Frequently asked questions

What is CVE-2026-35187?: pyLoad is a free and open-source download manager written in Python. In 0.5.0b3.dev96 and earlier, the parse_urls API function in src/pyload/core/api/__init__.py fetches arbitrary URLs server-side via get_url(url) (pycurl) without any URL validation, protocol restriction, or IP blacklist. An authenticated user with ADD permission can make HTTP/HTTPS requests to internal network resources and cloud metadata endpoints, read local files via file:// protocol (pycurl reads the file server-side), interact with internal services via gopher:// and dict:// protocols, and enumerate file existence via error-based oracle (error 37 vs empty response).
How severe is CVE-2026-35187?: CVE-2026-35187 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-35187 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35187?: CVE-2026-35187 affects Pyload-ng Project Pyload-ng. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35187?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-35187 have an EU (EUVD) identifier?: Yes. CVE-2026-35187 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-19470.
When was CVE-2026-35187 published?: CVE-2026-35187 was published on 2026-04-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pyload-ng_project:pyload-ng:*:*:*:*:*:python:*:*

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