Vulnerability-Lookup

CVE-2026-22791 (GCVE-0-2026-22791)

Vulnerability from cvelistv5 – Published: 2026-01-13 19:06 – Updated: 2026-01-13 19:44

Title

openCryptoki incorrectly calculates the buffer size in C_WrapKey with CKM_ECDH_AES_KEY_WRAP

Summary

openCryptoki is a PKCS#11 library and tools for Linux and AIX. In 3.25.0 and 3.26.0, there is a heap buffer overflow vulnerability in the CKM_ECDH_AES_KEY_WRAP implementation allows an attacker with local access to cause out-of-bounds writes in the host process by supplying a compressed EC public key and invoking C_WrapKey. This can lead to heap corruption, or denial-of-service.

Severity

6.6 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-13 19:43 UTC

CWE

CWE-131 - Incorrect Calculation of Buffer Size

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7646 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/opencryptoki/opencryptoki/secu…	x_refsource_CONFIRM
https://github.com/opencryptoki/opencryptoki/comm…	x_refsource_MISC
https://github.com/opencryptoki/opencryptoki/comm…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
opencryptoki	opencryptoki	Affected: >= 3.25.0, <= 3.26.0	guessed

Show details on NVD website

JSON

To clipboard

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        "id": "CVE-2026-22791",
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}

SUSE-SU-2026:0291-1

Vulnerability from csaf_suse - Published: 2026-01-26 11:11 - Updated: 2026-01-26 11:11

Summary

Security update for openCryptoki

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2026-22791.

CVE-2026-22791

6.1 (Medium)


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

Recommended: 12 products

Open the full advisory

SUSE-SU-2026:20345-1

Vulnerability from csaf_suse - Published: 2026-02-13 17:42 - Updated: 2026-10-15 17:04

Summary

Security update for openCryptoki

Severity

Moderate

Scope

2 vulnerabilities in this advisory, including CVE-2026-22791.

CVE-2026-22791

6.1 (Medium)


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

Recommended: 1 product

Open the full advisory

SUSE-SU-2026:20434-1

Vulnerability from csaf_suse - Published: 2026-02-13 17:44 - Updated: 2026-09-16 19:30

Summary

Security update for openCryptoki

Severity

Moderate

Scope

2 vulnerabilities in this advisory, including CVE-2026-22791.

CVE-2026-22791

6.1 (Medium)


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

Recommended: 24 products

Open the full advisory

SUSE-SU-2026:22293-1

Vulnerability from csaf_suse - Published: 2026-06-25 11:53 - Updated: 2026-10-15 17:08

Summary

Security update for openCryptoki

Severity

Important

Scope

3 vulnerabilities in this advisory, including CVE-2026-22791.

CVE-2026-22791

6.1 (Medium)


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

Recommended: 1 product

Open the full advisory

SUSE-SU-2026:22365-1

Vulnerability from csaf_suse - Published: 2026-06-25 11:52 - Updated: 2026-09-16 20:00

Summary

Security update for openCryptoki

Severity

Important

Scope

3 vulnerabilities in this advisory, including CVE-2026-22791.

CVE-2026-22791

6.1 (Medium)


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

Recommended: 24 products

Open the full advisory

UBUNTU-CVE-2026-22791 (CVE-2026-22791)

Vulnerability from osv_ubuntu – Published: 2026-01-13 19:16 – Updated: 2026-09-01 18:26 – Source website

Details

Severity

6.6 (Medium)


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

6.1 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-22791	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-22791	REPORT
	https://github.com/opencryptoki/opencryptoki/secu…	REPORT
	https://github.com/opencryptoki/opencryptoki/comm…	REPORT
	https://ubuntu.com/security/notices/USN-8707-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libopencryptoki0",
            "binary_version": "3.25.0+dfsg-0ubuntu1"
          },
          {
            "binary_name": "opencryptoki",
            "binary_version": "3.25.0+dfsg-0ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "opencryptoki",
        "purl": "pkg:deb/ubuntu/opencryptoki@3.25.0+dfsg-0ubuntu1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.24.0+git20250128.0462717+dfsg-0ubuntu1",
        "3.25.0+dfsg-0ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libopencryptoki0",
            "binary_version": "3.26.0+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "opencryptoki",
            "binary_version": "3.26.0+dfsg-0ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "opencryptoki",
        "purl": "pkg:deb/ubuntu/opencryptoki@3.26.0+dfsg-0ubuntu1.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
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            {
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            },
            {
              "fixed": "3.26.0+dfsg-0ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.25.0+dfsg-0ubuntu1",
        "3.26.0+dfsg-0ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "openCryptoki is a PKCS#11 library and tools for Linux and AIX. In 3.25.0 and 3.26.0, there is a heap buffer overflow vulnerability in the CKM_ECDH_AES_KEY_WRAP implementation allows an attacker with local access to cause out-of-bounds writes in the host process by supplying a compressed EC public key and invoking C_WrapKey. This can lead to heap corruption, or denial-of-service.",
  "id": "UBUNTU-CVE-2026-22791",
  "modified": "2026-09-01T18:26:37Z",
  "published": "2026-01-13T19:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-22791"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-22791"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/opencryptoki/opencryptoki/security/advisories/GHSA-26f5-3mwq-4wm7"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/opencryptoki/opencryptoki/commit/785d7577e1477d12fbe235554e7e7b24f2de34b7"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8707-1"
    }
  ],
  "related": [
    "USN-8707-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-22791"
  ]
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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.

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CVE-2026-22791 (GCVE-0-2026-22791)

SUSE-SU-2026:0291-1

SUSE-SU-2026:20345-1

SUSE-SU-2026:20434-1

SUSE-SU-2026:22293-1

SUSE-SU-2026:22365-1

UBUNTU-CVE-2026-22791 (CVE-2026-22791)

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour