Vulnerability-Lookup

OESA-2026-1890 (CVE-2026-34353)

Vulnerability from osv_openeuler – Published: 2026-04-11 11:10 – Updated: 2026-08-06 11:10 – Source website

Summary

ocaml security update

Details

OCaml is a high-level, strongly-typed, functional and object-oriented programming language from the ML family of languages. This package includes runtime environment, X11 support ,Documentation generator and emacs.

Security Fix(es):

In OCaml through 4.14.3, Bigarray.reshape allows an integer overflow, and resultant reading of arbitrary memory, when untrusted data is processed.(CVE-2026-34353)

Severity

5.9 (Medium)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-34353	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "ocaml-4.13.1-9.oe2203sp4.aarch64.rpm",
          "ocaml-debuginfo-4.13.1-9.oe2203sp4.aarch64.rpm",
          "ocaml-debugsource-4.13.1-9.oe2203sp4.aarch64.rpm",
          "ocaml-devel-4.13.1-9.oe2203sp4.aarch64.rpm",
          "ocaml-help-4.13.1-9.oe2203sp4.aarch64.rpm"
        ],
        "src": [
          "ocaml-4.13.1-9.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "ocaml-4.13.1-9.oe2203sp4.x86_64.rpm",
          "ocaml-debuginfo-4.13.1-9.oe2203sp4.x86_64.rpm",
          "ocaml-debugsource-4.13.1-9.oe2203sp4.x86_64.rpm",
          "ocaml-devel-4.13.1-9.oe2203sp4.x86_64.rpm",
          "ocaml-help-4.13.1-9.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "ocaml",
        "purl": "pkg:rpm/openEuler/ocaml\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.13.1-9.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "OCaml is a high-level, strongly-typed, functional and object-oriented programming language from the ML family of languages. This package includes runtime environment, X11 support ,Documentation generator and emacs.\r\n\r\nSecurity Fix(es):\n\nIn OCaml through 4.14.3, Bigarray.reshape allows an integer overflow, and resultant reading of arbitrary memory, when untrusted data is processed.(CVE-2026-34353)",
  "id": "OESA-2026-1890",
  "modified": "2026-08-06T11:10:54Z",
  "published": "2026-04-11T11:10:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1890"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34353"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ocaml security update",
  "upstream": [
    "CVE-2026-34353"
  ]
}

CVE-2026-34353 (GCVE-0-2026-34353)

Vulnerability from cvelistv5 – Published: 2026-03-27 04:55 – Updated: 2026-03-27 13:45

Summary

In OCaml through 4.14.3, Bigarray.reshape allows an integer overflow, and resultant reading of arbitrary memory, when untrusted data is processed.

Severity

5.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-27 13:39 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

mitre mitre root Scorecard

References

2 references

URL	Tags
https://github.com/ocaml/ocaml/issues/14655
https://github.com/ocaml/ocaml/pull/14674

Impacted products

1 product

Vendor	Product	Version
OCaml	OCaml	Affected: 0 , ≤ 4.14.3 (semver) cpe:2.3:a:ocaml:ocaml::::::::

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-34353",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-27T13:39:53.338499Z",
                "version": "2.0.3"
              },
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "packageURL": "pkg:opam/ocaml",
          "product": "OCaml",
          "vendor": "OCaml",
          "versions": [
            {
              "lessThanOrEqual": "4.14.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
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            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:ocaml:ocaml:*:*:*:*:*:*:*:*",
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                }
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          "lang": "en",
          "value": "In OCaml through 4.14.3, Bigarray.reshape allows an integer overflow, and resultant reading of arbitrary memory, when untrusted data is processed."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
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            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N",
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          "url": "https://github.com/ocaml/ocaml/pull/14674"
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  "cveMetadata": {
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    "assignerShortName": "mitre",
    "cveId": "CVE-2026-34353",
    "datePublished": "2026-03-27T04:55:58.294Z",
    "dateReserved": "2026-03-27T04:55:57.875Z",
    "dateUpdated": "2026-03-27T13:45:47.350Z",
    "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.

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.

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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.

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OESA-2026-1890 (CVE-2026-34353)

CVE-2026-34353 (GCVE-0-2026-34353)

Tags

Sightings

Nomenclature

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