github - ghsa-v6f2-g4gw-r4rc

GHSA-V6F2-G4GW-R4RC

Vulnerability from github – Published: 2025-09-12 15:31 – Updated: 2025-11-03 21:34

Details

Langchaingo supports the use of jinja2 syntax when parsing prompts, which is in turn parsed using the gonja library v1.5.3. Gonja supports include and extends syntax to read files, which leads to a server side template injection vulnerability within langchaingo, allowing an attacker to insert a statement into a prompt to read the "etc/passwd" file.

Severity ?

9.8 (Critical)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2025-9556"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-12T14:15:42Z",
    "severity": "CRITICAL"
  },
  "details": "Langchaingo supports the use of jinja2 syntax when parsing prompts, which is in turn parsed using the gonja library v1.5.3.\nGonja supports include and extends syntax to read files, which leads to a server side template injection vulnerability within langchaingo, allowing an attacker to insert a statement into a prompt to read the \"etc/passwd\" file.",
  "id": "GHSA-v6f2-g4gw-r4rc",
  "modified": "2025-11-03T21:34:28Z",
  "published": "2025-09-12T15:31:17Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/tmc/langchaingo/security/advisories/GHSA-mgcj-g55g-rf6h"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-9556"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tmc/langchaingo/pull/1348"
    },
    {
      "type": "WEB",
      "url": "https://www.kb.cert.org/vuls/id/949137"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-9556 (GCVE-0-2025-9556)

Vulnerability from cvelistv5 – Published: 2025-09-12 13:45 – Updated: 2025-11-03 18:14

Summary

Severity ?

9.8 (Critical)


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

CWE

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Assigner

certcc

References

URL

Tags

	https://github.com/tmc/langchaingo/security/advis…
	https://github.com/tmc/langchaingo/pull/1348

Impacted products

	Vendor	Product	Version
	Langchaingo	Langchaingo	Affected: 0.1.14

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-9556",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-09-12T14:00:53.431491Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-09-12T14:01:03.976Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T18:14:18.939Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://www.kb.cert.org/vuls/id/949137"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Langchaingo",
          "vendor": "Langchaingo",
          "versions": [
            {
              "status": "affected",
              "version": "0.1.14"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Langchaingo supports the use of jinja2 syntax when parsing prompts, which is in turn parsed using the gonja library v1.5.3.\r\nGonja supports include and extends syntax to read files, which leads to a server side template injection vulnerability within langchaingo, allowing an attacker to insert a statement into a prompt to read the \"etc/passwd\" file."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-200 Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-12T13:45:14.684Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "url": "https://github.com/tmc/langchaingo/security/advisories/GHSA-mgcj-g55g-rf6h"
        },
        {
          "url": "https://github.com/tmc/langchaingo/pull/1348"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "CVE-2025-9556",
      "x_generator": {
        "engine": "VINCE 3.0.25",
        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2025-9556"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2025-9556",
    "datePublished": "2025-09-12T13:45:14.684Z",
    "dateReserved": "2025-08-27T18:10:47.686Z",
    "dateUpdated": "2025-11-03T18:14:18.939Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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

GHSA-V6F2-G4GW-R4RC

CVE-2025-9556 (GCVE-0-2025-9556)

Tags

Sightings

Nomenclature