Vulnerability-Lookup

CVE-2026-41990 (GCVE-0-2026-41990)

Vulnerability from cvelistv5 – Published: 2026-04-23 04:39 – Updated: 2026-04-23 16:22

Summary

Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.

Severity

4 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-23 15:58 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

mitre mitre root

References

3 references

URL	Tags
https://lists.gnupg.org/pipermail/gnupg-announce/…
https://www.openwall.com/lists/oss-security/2026/…
https://dev.gnupg.org/T8208

Impacted products

1 product

Vendor	Product	Version	CPE status
gnupg	Libgcrypt	Affected: 1.12.0 , < 1.12.2 (semver) cpe:2.3:a:gnupg:libgcrypt::::::::

Show details on NVD website

JSON

To clipboard

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BELL-CVE-2026-41990 (CVE-2026-41990)

Vulnerability from osv_bellsoft – Published: 2026-04-25 06:10 – Updated: 2026-09-04 06:00 – Source website

Severity

4.0 (Medium)


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

References

URL

Type

https://docs.bell-sw.com/security/cves/CVE-2026-41990

ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Alpaquita:stream",
        "name": "libgcrypt",
        "purl": "pkg:apk/alpaquita/libgcrypt?arch=source\u0026distro=stream"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.12.0-r0"
            },
            {
              "fixed": "1.12.2-r0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "id": "BELL-CVE-2026-41990",
  "modified": "2026-09-04T06:00:45.441144Z",
  "published": "2026-04-25T06:10:19.125060Z",
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FKIE_CVE-2026-41990

Vulnerability from fkie_nvd - Published: 2026-04-23 05:16 - Updated: 2026-06-17 10:47

Severity

4.0 (Medium) - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

Summary

Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.

References

URL	Tags
cve@mitre.org	https://dev.gnupg.org/T8208	Broken Link
cve@mitre.org	https://lists.gnupg.org/pipermail/gnupg-announce/2026q2/000503.html	Mailing List, Release Notes
cve@mitre.org	https://www.openwall.com/lists/oss-security/2026/04/21/1	Mailing List, Release Notes

Impacted products

	Vendor	Product	Version
	gnupg	libgcrypt	*

JSON

To clipboard

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GHSA-78PV-QQ8X-94PX

Vulnerability from github – Published: 2026-04-23 06:30 – Updated: 2026-04-23 06:30

Details

Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.

Severity

4.0 (Medium)


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

Show details on source website

JSON

To clipboard

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    "github_reviewed": false,
    "github_reviewed_at": null,
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  },
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  "id": "GHSA-78pv-qq8x-94px",
  "modified": "2026-04-23T06:30:22Z",
  "published": "2026-04-23T06:30:22Z",
  "references": [
    {
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41990"
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      "type": "CVSS_V3"
    }
  ]
}

OPENSUSE-SU-2026:21047-1

Vulnerability from csaf_opensuse - Published: 2026-06-24 21:36 - Updated: 2026-09-17 17:35

Summary

Security update for libgcrypt

Severity

Low

Scope

1 vulnerability in this advisory, including CVE-2026-41990.

CVE-2026-41990

3.6 (Low)


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

Recommended: 10 products

Open the full advisory

RHSA-2026:8466

Vulnerability from csaf_redhat - Published: 2026-04-16 13:14 - Updated: 2026-09-06 05:31

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Severity

Moderate

Scope

2 vulnerabilities in this advisory, including CVE-2026-41990.

CVE-2026-41990

A flaw was found in Libgcrypt. During Dilithium signing operations, the library fails to perform a bounds check when writing to a static array. While the data involved is not directly controlled by an attacker, this vulnerability could lead to memory corruption, potentially resulting in a denial of service (DoS) or affecting data integrity.

3.3 (Low)


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

Fixed: 3 products

https://access.redhat.com/errata/RHSA-2026:8466

Open the full advisory

SUSE-SU-2026:22270-1

Vulnerability from csaf_suse - Published: 2026-06-24 21:37 - Updated: 2026-09-16 19:58

Summary

Security update for libgcrypt

Severity

Low

Scope

1 vulnerability in this advisory, including CVE-2026-41990.

CVE-2026-41990

3.6 (Low)


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

Recommended: 4 products

Open the full advisory

SUSE-SU-2026:22355-1

Vulnerability from csaf_suse - Published: 2026-06-24 21:37 - Updated: 2026-09-16 20:00

Summary

Security update for libgcrypt

Severity

Low

Scope

1 vulnerability in this advisory, including CVE-2026-41990.

CVE-2026-41990

3.6 (Low)


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

Recommended: 20 products

Open the full advisory

UBUNTU-CVE-2026-41990 (CVE-2026-41990)

Vulnerability from osv_ubuntu – Published: 2026-04-23 05:16 – Updated: 2026-08-31 14:20 – Source website

Details

Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.

Severity

4.0 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-41990	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-41990	REPORT
	https://www.openwall.com/lists/oss-security/2026/…	REPORT
	https://ubuntu.com/security/notices/USN-8319-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libgcrypt-bin",
            "binary_version": "1.12.0-2ubuntu0.1~Fips1~rc11"
          },
          {
            "binary_name": "libgcrypt20",
            "binary_version": "1.12.0-2ubuntu0.1~Fips1~rc11"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:FIPS-updates:24.04:LTS",
        "name": "libgcrypt20",
        "purl": "pkg:deb/ubuntu/libgcrypt20@1.12.0-2ubuntu0.1~Fips1~rc11?arch=source\u0026distro=fips-updates/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.12.0-2ubuntu0.1~Fips1~rc11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.10.3-2ubuntu0.1~Fips1~rc6",
        "1.10.3-2ubuntu0.1~Fips1~rc7"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libgcrypt-bin",
            "binary_version": "1.12.0-2ubuntu0.1"
          },
          {
            "binary_name": "libgcrypt20",
            "binary_version": "1.12.0-2ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libgcrypt20",
        "purl": "pkg:deb/ubuntu/libgcrypt20@1.12.0-2ubuntu0.1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.12.0-2ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.11.0-7build1",
        "1.11.2-2",
        "1.11.2-3",
        "1.12.0-2"
      ]
    }
  ],
  "aliases": [],
  "details": "Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.",
  "id": "UBUNTU-CVE-2026-41990",
  "modified": "2026-08-31T14:20:44Z",
  "published": "2026-04-23T05:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-41990"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-41990"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2026/04/21/1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8319-1"
    }
  ],
  "related": [
    "USN-8319-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-41990"
  ]
}

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

CVE-2026-41990 (GCVE-0-2026-41990)

BELL-CVE-2026-41990 (CVE-2026-41990)

FKIE_CVE-2026-41990

GHSA-78PV-QQ8X-94PX

OPENSUSE-SU-2026:21047-1

RHSA-2026:8466

SUSE-SU-2026:22270-1

SUSE-SU-2026:22355-1

UBUNTU-CVE-2026-41990 (CVE-2026-41990)

Tags

Sightings

Nomenclature

Related by attack behaviour