Vulnerability-Lookup

PYSEC-2025-250

Vulnerability from pysec - Published: 2025-07-07 10:15 - Updated: 2026-07-13 05:49

Details

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 a malicious Sitemap XML, leading to a Denial of Service (DoS) by exhausting system memory and potentially causing a system crash. The issue is resolved in version v0.12.29.

Severity

7.5 (High)


                  
                    CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impacted products

Name	purl
llama-index	pkg:pypi/llama-index

Aliases

CVE-2025-3225

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {},
      "package": {
        "ecosystem": "PyPI",
        "name": "llama-index",
        "purl": "pkg:pypi/llama-index"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.12.21"
            },
            {
              "fixed": "0.12.29"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.12.21",
        "0.12.22",
        "0.12.23",
        "0.12.24",
        "0.12.25",
        "0.12.26",
        "0.12.27",
        "0.12.28"
      ]
    }
  ],
  "aliases": [
    "CVE-2025-3225"
  ],
  "details": "An XML Entity Expansion vulnerability, also known as a \u0027billion laughs\u0027 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 a malicious Sitemap XML, leading to a Denial of Service (DoS) by exhausting system memory and potentially causing a system crash. The issue is resolved in version v0.12.29.",
  "id": "PYSEC-2025-250",
  "modified": "2026-07-13T05:49:41.008783Z",
  "published": "2025-07-07T10:15:27.047Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/run-llama/llama_index/commit/4f6ee062b19212106a2632af9c9521fc7f0a3584"
    },
    {
      "type": "EVIDENCE",
      "url": "https://huntr.com/bounties/e33c0699-e9a2-49aa-837b-5363205637a2"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-3225 (GCVE-0-2025-3225)

Vulnerability from cvelistv5 – Published: 2025-07-07 09:54 – Updated: 2025-07-07 14:59

Title

XML Entity Expansion vulnerability in run-llama/llama_index

Summary

Severity

7.5 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-776 - Improper Restriction of Recursive Entity References in DTDs

Assigner

@huntr_ai

References

2 references

URL	Tags
https://huntr.com/bounties/e33c0699-e9a2-49aa-837…
https://github.com/run-llama/llama_index/commit/4…

Impacted products

1 product

Vendor	Product	Version
run-llama	run-llama/llama_index	Affected: unspecified , < v0.12.29 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-3225",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-07-07T14:54:59.585565Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-07-07T14:59:26.842Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "run-llama/llama_index",
          "vendor": "run-llama",
          "versions": [
            {
              "lessThan": "v0.12.29",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An XML Entity Expansion vulnerability, also known as a \u0027billion laughs\u0027 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 a malicious Sitemap XML, leading to a Denial of Service (DoS) by exhausting system memory and potentially causing a system crash. The issue is resolved in version v0.12.29."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-776",
              "description": "CWE-776 Improper Restriction of Recursive Entity References in DTDs",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-07T09:56:23.672Z",
        "orgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
        "shortName": "@huntr_ai"
      },
      "references": [
        {
          "url": "https://huntr.com/bounties/e33c0699-e9a2-49aa-837b-5363205637a2"
        },
        {
          "url": "https://github.com/run-llama/llama_index/commit/4f6ee062b19212106a2632af9c9521fc7f0a3584"
        }
      ],
      "source": {
        "advisory": "e33c0699-e9a2-49aa-837b-5363205637a2",
        "discovery": "EXTERNAL"
      },
      "title": "XML Entity Expansion vulnerability in run-llama/llama_index"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
    "assignerShortName": "@huntr_ai",
    "cveId": "CVE-2025-3225",
    "datePublished": "2025-07-07T09:54:06.033Z",
    "dateReserved": "2025-04-03T15:03:26.975Z",
    "dateUpdated": "2025-07-07T14:59:26.842Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

PYSEC-2025-250

CVE-2025-3225 (GCVE-0-2025-3225)

Tags

Sightings

Nomenclature