Vulnerability-Lookup

GHSA-6XW4-2G22-26H8

Vulnerability from github – Published: 2026-06-30 18:46 – Updated: 2026-06-30 18:46

Summary

Open Babel has an out-of-bounds read in CIF transform3d::DescribeAsString

Details

Summary

A memory-safety vulnerability in Open Babel's CIF file format parser allowed an out-of-bounds read when reading a crafted input file.

Details

The flaw was in OpenBabel::transform3d::DescribeAsString. A malformed symmetry-operation string caused the parser to read past the end of its internal buffer while formatting the description.

Impact

Open Babel is a C++ library and CLI used to read and write chemistry file formats; it is shipped by Linux distributions and embedded in services that may parse untrusted input. Triggering this vulnerability requires the victim to open a malicious CIF file with the obabel tool, the OBConversion API, or any of the language bindings.

Affected versions

All releases up to and including 3.1.1.

Patched version

3.2.0 (released 2026-05-26).

Patch

Fix commit: https://github.com/openbabel/openbabel/commit/e23a224b Tracked in #2862.

A minimized reproducer for this CVE is checked in at test/files/fuzz_regress/cve-2026-2704.cif and is exercised on every CI build under ASAN+UBSAN by the fuzzregresstest harness.

Credit

Reported by Vedant Madane (@VedantMadane).

Severity

4.4 (Medium)


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

2.1 (Low)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "openbabel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-2704"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119",
      "CWE-125"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-30T18:46:12Z",
    "nvd_published_at": null,
    "severity": "LOW"
  },
  "details": "\u003e ### Summary\n\u003e\n\u003e A memory-safety vulnerability in Open Babel\u0027s CIF file format parser\n\u003e allowed an out-of-bounds read when reading a crafted input file.\n\u003e\n\u003e ### Details\n\u003e\n\u003e The flaw was in `OpenBabel::transform3d::DescribeAsString`. A malformed\n\u003e symmetry-operation string caused the parser to read past the end of its\n\u003e internal buffer while formatting the description.\n\u003e\n\u003e ### Impact\n\u003e\n\u003e Open Babel is a C++ library and CLI used to read and write chemistry\n\u003e file formats; it is shipped by Linux distributions and embedded in\n\u003e services that may parse untrusted input. Triggering this vulnerability\n\u003e requires the victim to open a malicious CIF file with the `obabel`\n\u003e tool, the OBConversion API, or any of the language bindings.\n\u003e\n\u003e ### Affected versions\n\u003e\n\u003e All releases up to and including 3.1.1.\n\u003e\n\u003e ### Patched version\n\u003e\n\u003e 3.2.0 (released 2026-05-26).\n\u003e\n\u003e ### Patch\n\u003e\n\u003e Fix commit: https://github.com/openbabel/openbabel/commit/e23a224b\n\u003e Tracked in #2862.\n\u003e\n\u003e A minimized reproducer for this CVE is checked in at\n\u003e `test/files/fuzz_regress/cve-2026-2704.cif` and is exercised on every\n\u003e CI build under ASAN+UBSAN by the `fuzzregresstest` harness.\n\u003e\n\u003e ### Credit\n\u003e\n\u003e Reported by Vedant Madane (@VedantMadane).",
  "id": "GHSA-6xw4-2g22-26h8",
  "modified": "2026-06-30T18:46:12Z",
  "published": "2026-06-30T18:46:12Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openbabel/openbabel/security/advisories/GHSA-6xw4-2g22-26h8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2704"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openbabel/openbabel/issues/2848"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openbabel/openbabel/pull/2862"
    },
    {
      "type": "WEB",
      "url": "https://github.com/VedantMadane/openbabel/commit/e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a"
    },
    {
      "type": "WEB",
      "url": "https://github.com/oneafter/0128/blob/main/ob1/repro.cif"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openbabel/openbabel"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openbabel/openbabel/releases/tag/openbabel-3-2-0"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.346650"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.346650"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.754378"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/754378"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/346650"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/346650/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Open Babel has an out-of-bounds read in CIF transform3d::DescribeAsString"
}

CVE-2026-2704 (GCVE-0-2026-2704)

Vulnerability from cvelistv5 – Published: 2026-02-19 04:32 – Updated: 2026-05-28 17:52 X_Open Source

Title

Open Babel CIF File transform3d.cpp DescribeAsString out-of-bounds

Summary

A security vulnerability has been detected in Open Babel up to 3.1.1. The affected element is the function OpenBabel::transform3d::DescribeAsString of the file src/math/transform3d.cpp of the component CIF File Handler. The manipulation leads to out-of-bounds read. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 3.2.0 is sufficient to fix this issue. The identifier of the patch is e23a224b8fd9d7c2a7cde9ef4ec6afb4c05aa08a. It is suggested to install a patch to address this issue.

Severity

5.3 (Medium)


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

4.3 (Medium)


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

4.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

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

Assigner

VulDB

References

9 references

URL	Tags
https://vuldb.com/vuln/346650	vdb-entrytechnical-description
https://vuldb.com/vuln/346650/cti	signaturepermissions-required
https://vuldb.com/submit/754378	third-party-advisory
https://github.com/openbabel/openbabel/issues/2848	issue-tracking
https://github.com/openbabel/openbabel/pull/2862	issue-trackingpatch
https://github.com/oneafter/0128/blob/main/ob1/re…	exploit
https://github.com/VedantMadane/openbabel/commit/…	patch
https://github.com/openbabel/openbabel/releases/t…	patch
https://github.com/openbabel/openbabel/security/a…	related

Impacted products

1 product

Vendor	Product	Version
n/a	Open Babel	Affected: 3.1.0 Affected: 3.1.1 Unaffected: 3.2.0 cpe:2.3:a:open_babel:open_babel::::::::

Credits

Oneafter (VulDB User)

Show details on NVD website

JSON

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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.

Action not permitted

GHSA-6XW4-2G22-26H8

Summary

Details

Impact

Affected versions

Patched version

Patch

Credit

CVE-2026-2704 (GCVE-0-2026-2704)

Tags

Sightings

Nomenclature