Vulnerability-Lookup

GHSA-925F-Q35M-63GX

Vulnerability from github – Published: 2026-02-21 15:31 – Updated: 2026-02-21 15:31

Details

A vulnerability was identified in janet-lang janet up to 1.40.1. Affected by this vulnerability is the function janetc_varset of the file src/core/specials.c of the component handleattr Handler. The manipulation leads to out-of-bounds read. The attack can only be performed from a local environment. The exploit is publicly available and might be used. Upgrading to version 1.41.0 addresses this issue. The identifier of the patch is 2fabc80151a2b8834ee59cda8a70453f848b40e5. The affected component should be upgraded.

Severity

3.3 (Low)


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

1.9 (Low)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-2869"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119",
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-21T15:15:58Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability was identified in janet-lang janet up to 1.40.1. Affected by this vulnerability is the function janetc_varset of the file src/core/specials.c of the component handleattr Handler. The manipulation leads to out-of-bounds read. The attack can only be performed from a local environment. The exploit is publicly available and might be used. Upgrading to version 1.41.0 addresses this issue. The identifier of the patch is 2fabc80151a2b8834ee59cda8a70453f848b40e5. The affected component should be upgraded.",
  "id": "GHSA-925f-q35m-63gx",
  "modified": "2026-02-21T15:31:33Z",
  "published": "2026-02-21T15:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2869"
    },
    {
      "type": "WEB",
      "url": "https://github.com/janet-lang/janet/issues/1699"
    },
    {
      "type": "WEB",
      "url": "https://github.com/janet-lang/janet/commit/2fabc80151a2b8834ee59cda8a70453f848b40e5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/janet-lang/janet"
    },
    {
      "type": "WEB",
      "url": "https://github.com/janet-lang/janet/releases/tag/v1.41.0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/oneafter/0123/blob/main/ja1/repro"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.347106"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.347106"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.754589"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-2869 (GCVE-0-2026-2869)

Vulnerability from cvelistv5 – Published: 2026-02-21 14:32 – Updated: 2026-02-23 19:36 X_Open Source

Title

janet-lang janet handleattr specials.c janetc_varset out-of-bounds

Summary

Severity

4.8 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

3.3 (Low)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

3.3 (Low)


                        
                          CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-23 19:35 UTC

CWE

CWE-125 - Out-of-Bounds Read
CWE-119 - Memory Corruption

Assigner

VulDB mitre root

References

8 references

URL	Tags
https://vuldb.com/?id.347106	vdb-entrytechnical-description
https://vuldb.com/?ctiid.347106	signaturepermissions-required
https://vuldb.com/?submit.754589	third-party-advisory
https://github.com/janet-lang/janet/issues/1699	issue-tracking
https://github.com/oneafter/0123/blob/main/ja1/repro	exploit
https://github.com/janet-lang/janet/commit/2fabc8…	patch
https://github.com/janet-lang/janet/releases/tag/…	patch
https://github.com/janet-lang/janet/	product

Impacted products

1 product

Vendor	Product	Version
janet-lang	janet	Affected: 1.40.0 Affected: 1.40.1 Unaffected: 1.41.0

Credits

Oneafter (VulDB User)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-2869",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-23T19:35:56.745123Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-23T19:36:13.428Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "modules": [
            "handleattr Handler"
          ],
          "product": "janet",
          "vendor": "janet-lang",
          "versions": [
            {
              "status": "affected",
              "version": "1.40.0"
            },
            {
              "status": "affected",
              "version": "1.40.1"
            },
            {
              "status": "unaffected",
              "version": "1.41.0"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Oneafter (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was identified in janet-lang janet up to 1.40.1. Affected by this vulnerability is the function janetc_varset of the file src/core/specials.c of the component handleattr Handler. The manipulation leads to out-of-bounds read. The attack can only be performed from a local environment. The exploit is publicly available and might be used. Upgrading to version 1.41.0 addresses this issue. The identifier of the patch is 2fabc80151a2b8834ee59cda8a70453f848b40e5. The affected component should be upgraded."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 1.7,
            "vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-125",
              "description": "Out-of-Bounds Read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-21T14:32:08.938Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-347106 | janet-lang janet handleattr specials.c janetc_varset out-of-bounds",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/?id.347106"
        },
        {
          "name": "VDB-347106 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.347106"
        },
        {
          "name": "Submit #754589 | janet-lang janet 4dd08a4 Heap-based Buffer Overflow",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/?submit.754589"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/janet-lang/janet/issues/1699"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/oneafter/0123/blob/main/ja1/repro"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/janet-lang/janet/commit/2fabc80151a2b8834ee59cda8a70453f848b40e5"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/janet-lang/janet/releases/tag/v1.41.0"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/janet-lang/janet/"
        }
      ],
      "tags": [
        "x_open-source"
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-02-20T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-02-20T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-02-20T15:39:05.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "janet-lang janet handleattr specials.c janetc_varset out-of-bounds"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-2869",
    "datePublished": "2026-02-21T14:32:08.938Z",
    "dateReserved": "2026-02-20T14:33:57.660Z",
    "dateUpdated": "2026-02-23T19:36:13.428Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

GHSA-925F-Q35M-63GX

CVE-2026-2869 (GCVE-0-2026-2869)

Tags

Sightings

Nomenclature

Related by attack behaviour