Vulnerability-Lookup

(CVE-2019-14855)

Vulnerability from cleanstart – Published: 2026-01-30 17:15 – Updated: 2026-09-18 11:59 – Source website

Withdrawn 2026-09-18

Summary

flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm

Details

Security vulnerability affects the gnupg package. A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm.

Severity

9.8 (Critical)


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

References

URL

Type

	https://github.com/cleanstart-dev/cleanstart-secu…	ADVISORY
	https://osv.dev/vulnerability/CVE-2019-14855	WEB
	https://nvd.nist.gov/vuln/detail/CVE-2019-14855	WEB

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "gnupg"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.8-r0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [],
  "database_specific": {},
  "details": "Security vulnerability affects the gnupg package. A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm.",
  "id": "CLEANSTART-2026-HT23337",
  "modified": "2026-09-18T11:59:01.768079Z",
  "published": "2026-01-30T17:15:56.746125Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-HT23337"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2019-14855"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-14855"
    }
  ],
  "related": [],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm",
  "upstream": [
    "CVE-2019-14855"
  ],
  "withdrawn": "2026-09-18T11:59:01.768079Z"
}

CVE-2019-14855 (GCVE-0-2019-14855)

Vulnerability from cvelistv5 – Published: 2020-03-20 00:00 – Updated: 2024-08-05 00:26

Summary

A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18.

Severity

5.3 (Medium)


                        
                          CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

CWE

CWE-326

Assigner

redhat redhat root

References

5 references

URL	Tags
https://usn.ubuntu.com/4516-1/	vendor-advisory
https://rwc.iacr.org/2020/slides/Leurent.pdf
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2…
https://lists.gnupg.org/pipermail/gnupg-announce/…
https://dev.gnupg.org/T4755

Impacted products

1 product

Vendor	Product	Version
Red Hat	gnupg2	Affected: 2.2.18

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T00:26:39.140Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "USN-4516-1",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4516-1/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://rwc.iacr.org/2020/slides/Leurent.pdf"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14855"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.gnupg.org/pipermail/gnupg-announce/2019q4/000442.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://dev.gnupg.org/T4755"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "gnupg2",
          "vendor": "Red Hat",
          "versions": [
            {
              "status": "affected",
              "version": "2.2.18"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-326",
              "description": "CWE-326",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-10-07T00:00:00.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "name": "USN-4516-1",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://usn.ubuntu.com/4516-1/"
        },
        {
          "url": "https://rwc.iacr.org/2020/slides/Leurent.pdf"
        },
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14855"
        },
        {
          "url": "https://lists.gnupg.org/pipermail/gnupg-announce/2019q4/000442.html"
        },
        {
          "url": "https://dev.gnupg.org/T4755"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2019-14855",
    "datePublished": "2020-03-20T00:00:00.000Z",
    "dateReserved": "2019-08-10T00:00:00.000Z",
    "dateUpdated": "2024-08-05T00:26:39.140Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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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(CVE-2019-14855)

CVE-2019-14855 (GCVE-0-2019-14855)

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