What is CVE-2025-3225?

CVE-2025-3225 is a high-severity vulnerability in Llamaindex, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 7.5/10. Published 2025-07-07.

How severe is CVE-2025-3225?

High severity. CVSS v3 base score is 7.5 out of 10.

XXE in Llamaindex

CVE-2025-3225

An XML Entity Expansion vulnerability, also known as a 'billion laughs' attack, exists in the sitemap parser of the run-llama/llama_index repository, specifically affecting version v0.12.21. This vulnerability allows an attacker to supply…

EPSS: 0.004 (33.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Llamaindex
Run-llama Run-llama/llama_index — versions unspecified

Weakness classification (CWE)

CWE-776 — Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion)

References

security@huntr.dev (Exploit, Third Party Advisory)
security@huntr.dev (Patch)

Frequently asked questions

What is CVE-2025-3225?: CVE-2025-3225 is a high-severity vulnerability in Llamaindex, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 7.5/10. Published 2025-07-07.
How severe is CVE-2025-3225?: High severity. CVSS v3 base score is 7.5 out of 10.