What is CVE-2023-0435?

CVE-2023-0435 is a critical-severity vulnerability in Pyload, classified under CWE-1125. CVSS score: 9.8/10. Published 2023-01-22.

How severe is CVE-2023-0435?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2023-0435 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Pyload

CVE-2023-0435

Excessive Attack Surface in GitHub repository pyload/pyload prior to 0.5.0b3.dev41.

Published 2023-01-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (52.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Pyload
Pyload Pyload/pyload — versions unspecified

Weakness classification (CWE)

CWE-1125

Public proof-of-concept exploits

References

huntr.dev/bounties/a3e32ad5-caee-4f43-b10a-4a876d4e3f1d (Exploit, Patch, Third Party Advisory)
github.com/pyload/pyload/commit/431ea6f0371d748df66b344a05ca1a8e0310cff3 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2023-0435?: CVE-2023-0435 is a critical-severity vulnerability in Pyload, classified under CWE-1125. CVSS score: 9.8/10. Published 2023-01-22.
How severe is CVE-2023-0435?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-0435 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.