CVE-2026-33340

CRITICALNVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under NVD CVSS v3. EPSS exploit probability: 21.6%, top 3% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 22%CVSS: 9.1Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.post("/api/proxy") endpoint allows unauthenticated attackers to force the server into making arbitrary GET requests. This can be exploited to access internal services, scan local networks, or exfiltrate sensitive cloud metadata (e.g., AWS/GCP IAM tokens). As of time of publication, no known patched versions are available.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
72(Attend)
EG Risk 72/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity91% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
22%
EPSS %ILE
97%
KEV
Not listed

Published

March 24, 2026

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated May 20, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Unauthenticated Server-Side Request Forgery (SSRF) in /api/proxy endpoint · Advisory · ParisNeo/lollms-webui · GitHub

https://github.com/ParisNeo/lollms-webui/security/advisories/GHSA-mcwr-5469-pxj4
generic

lollms-webui/lollms/server/endpoints/lollms_apps.py at 8c5dcef63d847bb3d027ec74915d8fe4afd3014e · ParisNeo/lollms-webui · GitHub

https://github.com/ParisNeo/lollms-webui/blob/8c5dcef63d847bb3d027ec74915d8fe4afd3014e/lollms/server/endpoints/lollms_apps.py#L443-L450

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 37× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-26 14:54 UTCEPSS rescore
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  9. 2026-07-23 03:09 UTCEG score recompute
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  1. 2026-07-06 16:27 UTCEPSS rescore
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  19. 2026-06-22 14:25 UTCEPSS rescore
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  21. 2026-06-21 01:59 UTCEPSS rescore
  22. 2026-06-19 19:25 UTCEPSS rescore
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  24. 2026-06-18 17:52 UTCEPSS rescore
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  26. 2026-06-17 17:53 UTCEPSS rescore
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  40. 2026-06-07 15:25 UTCEPSS rescore
  41. 2026-06-06 13:47 UTCEPSS rescore
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  45. 2026-06-05 06:10 UTCEPSS rescore
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  49. 2026-06-02 20:13 UTCEPSS rescore
  50. 2026-06-01 13:52 UTCEPSS rescore
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  58. 2026-05-29 13:44 UTCEPSS rescore
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  60. 2026-05-28 13:44 UTCEPSS rescore
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  63. 2026-05-27 13:40 UTCEPSS rescore
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  67. 2026-05-20 22:38 UTCEPSS rescore
  68. 2026-05-20 22:38 UTCEPSS rescore
  69. 2026-05-20 20:31 UTCEG score recompute
  70. 2026-05-20 11:22 UTCEPSS rescore
  71. 2026-05-20 11:22 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2026/CVE-2026-33340.yaml
    First seen Jan 1, 2026

    LoLLMs WEBUI - Server-Side Request Forgery

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-33340?
CVE-2026-33340 is a critical vulnerability published on March 24, 2026. 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.post("/api/proxy") endpoint allows unauthenticated attackers…
When was CVE-2026-33340 disclosed?
CVE-2026-33340 was first published in the National Vulnerability Database on March 24, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-33340 actively exploited?
CVE-2026-33340 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22% probability of exploitation in the next 30 days, which ranks it in the top 2.6% of all scored CVEs.
What is the CVSS score of CVE-2026-33340?
CVE-2026-33340 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-33340?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-33340, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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