What is CVE-2026-33340?

CVE-2026-33340 is a critical-severity vulnerability in Parisneo Lollms-webui, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2026-03-24.

How severe is CVE-2026-33340?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Is CVE-2026-33340 known to be exploited?

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

Auth bypass in Parisneo Lollms-webui

CVE-2026-33340

LoLLMs WEBUI provides the Web user interface for Lord of Large Language and Multi modal Systems. A critical Server-Side Request Forgery (SSRF) vulnerability has been identified in all known existing versions of `lollms-webui`. The `@router…

Vulnerability class: Broken Authentication

EPSS: 0.094 (92.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Parisneo Lollms-webui — versions <= 8c5dcef63d847bb3d027ec74915d8fe4afd3014e

Weakness classification (CWE)

Public proof-of-concept exploits

regaan/CVE-2026-33340

References

https://github.com/ParisNeo/lollms-webui/security/advisories/GHSA-mcwr-5469-pxj4 (x_refsource_CONFIRM)
https://github.com/ParisNeo/lollms-webui/blob/8c5dcef63d847bb3d027ec74915d8fe4afd3014e/lollms/server/endpoints/lollms_apps.py#L443-L450 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33340?: CVE-2026-33340 is a critical-severity vulnerability in Parisneo Lollms-webui, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2026-03-24.
How severe is CVE-2026-33340?: Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2026-33340 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.