Vulnerability-Lookup

OESA-2025-1591 (CVE-2025-40908)

Vulnerability from osv_openeuler – Published: 2025-06-06 11:08 – Updated: 2026-08-06 11:08 – Source website

Summary

perl-YAML-LibYAML security update

Details

Security Fix(es):

A vulnerability was found in TINITA YAML-LibYAML up to 0.902.x on Perl. It has been classified as problematic.CWE is classifying the issue as CWE-552. The product makes files or directories accessible to unauthorized actors, even though they should not be.This is going to have an impact on confidentiality.Upgrading to version 0.903.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.(CVE-2025-40908)

Severity

9.1 (Critical)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-40908	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "perl-YAML-LibYAML-0.83-2.oe2203sp4.aarch64.rpm",
          "perl-YAML-LibYAML-debuginfo-0.83-2.oe2203sp4.aarch64.rpm",
          "perl-YAML-LibYAML-debugsource-0.83-2.oe2203sp4.aarch64.rpm",
          "perl-YAML-LibYAML-help-0.83-2.oe2203sp4.aarch64.rpm"
        ],
        "src": [
          "perl-YAML-LibYAML-0.83-2.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "perl-YAML-LibYAML-0.83-2.oe2203sp4.x86_64.rpm",
          "perl-YAML-LibYAML-debuginfo-0.83-2.oe2203sp4.x86_64.rpm",
          "perl-YAML-LibYAML-debugsource-0.83-2.oe2203sp4.x86_64.rpm",
          "perl-YAML-LibYAML-help-0.83-2.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "perl-YAML-LibYAML",
        "purl": "pkg:rpm/openEuler/perl-YAML-LibYAML\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.83-2.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "perl-YAML-LibYAML-0.88-2.oe2403.aarch64.rpm",
          "perl-YAML-LibYAML-debuginfo-0.88-2.oe2403.aarch64.rpm",
          "perl-YAML-LibYAML-debugsource-0.88-2.oe2403.aarch64.rpm",
          "perl-YAML-LibYAML-help-0.88-2.oe2403.aarch64.rpm",
          "perl-YAML-LibYAML-0.88-2.oe2403sp1.aarch64.rpm",
          "perl-YAML-LibYAML-debuginfo-0.88-2.oe2403sp1.aarch64.rpm",
          "perl-YAML-LibYAML-debugsource-0.88-2.oe2403sp1.aarch64.rpm",
          "perl-YAML-LibYAML-help-0.88-2.oe2403sp1.aarch64.rpm"
        ],
        "src": [
          "perl-YAML-LibYAML-0.88-2.oe2403.src.rpm",
          "perl-YAML-LibYAML-0.88-2.oe2403sp1.src.rpm"
        ],
        "x86_64": [
          "perl-YAML-LibYAML-0.88-2.oe2403.x86_64.rpm",
          "perl-YAML-LibYAML-debuginfo-0.88-2.oe2403.x86_64.rpm",
          "perl-YAML-LibYAML-debugsource-0.88-2.oe2403.x86_64.rpm",
          "perl-YAML-LibYAML-help-0.88-2.oe2403.x86_64.rpm",
          "perl-YAML-LibYAML-0.88-2.oe2403sp1.x86_64.rpm",
          "perl-YAML-LibYAML-debuginfo-0.88-2.oe2403sp1.x86_64.rpm",
          "perl-YAML-LibYAML-debugsource-0.88-2.oe2403sp1.x86_64.rpm",
          "perl-YAML-LibYAML-help-0.88-2.oe2403sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS",
        "name": "perl-YAML-LibYAML",
        "purl": "pkg:rpm/openEuler/perl-YAML-LibYAML\u0026distro=openEuler-24.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.88-2.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "perl-YAML-LibYAML-0.88-2.oe2403sp1.aarch64.rpm",
          "perl-YAML-LibYAML-debuginfo-0.88-2.oe2403sp1.aarch64.rpm",
          "perl-YAML-LibYAML-debugsource-0.88-2.oe2403sp1.aarch64.rpm",
          "perl-YAML-LibYAML-help-0.88-2.oe2403sp1.aarch64.rpm"
        ],
        "src": [
          "perl-YAML-LibYAML-0.88-2.oe2403sp1.src.rpm"
        ],
        "x86_64": [
          "perl-YAML-LibYAML-0.88-2.oe2403sp1.x86_64.rpm",
          "perl-YAML-LibYAML-debuginfo-0.88-2.oe2403sp1.x86_64.rpm",
          "perl-YAML-LibYAML-debugsource-0.88-2.oe2403sp1.x86_64.rpm",
          "perl-YAML-LibYAML-help-0.88-2.oe2403sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "perl-YAML-LibYAML",
        "purl": "pkg:rpm/openEuler/perl-YAML-LibYAML\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.88-2.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "perl-YAML-LibYAML-0.74-3.oe2003sp4.aarch64.rpm",
          "perl-YAML-LibYAML-debuginfo-0.74-3.oe2003sp4.aarch64.rpm",
          "perl-YAML-LibYAML-debugsource-0.74-3.oe2003sp4.aarch64.rpm",
          "perl-YAML-LibYAML-help-0.74-3.oe2003sp4.aarch64.rpm"
        ],
        "src": [
          "perl-YAML-LibYAML-0.74-3.oe2003sp4.src.rpm"
        ],
        "x86_64": [
          "perl-YAML-LibYAML-0.74-3.oe2003sp4.x86_64.rpm",
          "perl-YAML-LibYAML-debuginfo-0.74-3.oe2003sp4.x86_64.rpm",
          "perl-YAML-LibYAML-debugsource-0.74-3.oe2003sp4.x86_64.rpm",
          "perl-YAML-LibYAML-help-0.74-3.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "perl-YAML-LibYAML",
        "purl": "pkg:rpm/openEuler/perl-YAML-LibYAML\u0026distro=openEuler-20.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.74-3.oe2003sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "perl-YAML-LibYAML-0.83-2.oe2203sp3.aarch64.rpm",
          "perl-YAML-LibYAML-debuginfo-0.83-2.oe2203sp3.aarch64.rpm",
          "perl-YAML-LibYAML-debugsource-0.83-2.oe2203sp3.aarch64.rpm",
          "perl-YAML-LibYAML-help-0.83-2.oe2203sp3.aarch64.rpm"
        ],
        "src": [
          "perl-YAML-LibYAML-0.83-2.oe2203sp3.src.rpm"
        ],
        "x86_64": [
          "perl-YAML-LibYAML-0.83-2.oe2203sp3.x86_64.rpm",
          "perl-YAML-LibYAML-debuginfo-0.83-2.oe2203sp3.x86_64.rpm",
          "perl-YAML-LibYAML-debugsource-0.83-2.oe2203sp3.x86_64.rpm",
          "perl-YAML-LibYAML-help-0.83-2.oe2203sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP3",
        "name": "perl-YAML-LibYAML",
        "purl": "pkg:rpm/openEuler/perl-YAML-LibYAML\u0026distro=openEuler-22.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.83-2.oe2203sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Critical"
  },
  "details": "Security Fix(es):\n\nA vulnerability was found in TINITA YAML-LibYAML up to 0.902.x on Perl. It has been classified as problematic.CWE is classifying the issue as CWE-552. The product makes files or directories accessible to unauthorized actors, even though they should not be.This is going to have an impact on confidentiality.Upgrading to version 0.903.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.(CVE-2025-40908)",
  "id": "OESA-2025-1591",
  "modified": "2026-08-06T11:08:41Z",
  "published": "2025-06-06T11:08:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1591"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40908"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "perl-YAML-LibYAML security update",
  "upstream": [
    "CVE-2025-40908"
  ]
}

CVE-2025-40908 (GCVE-0-2025-40908)

Vulnerability from cvelistv5 – Published: 2025-06-01 13:41 – Updated: 2025-06-02 03:22

Title

YAML-LibYAML prior to 0.903.0 for Perl uses 2-args open, allowing existing files to be modified

Summary

YAML-LibYAML prior to 0.903.0 for Perl uses 2-args open, allowing existing files to be modified

Severity

9.1 (Critical)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-06-02 03:22 UTC

CWE

CWE-552 - Files or Directories Accessible to External Parties

Assigner

CPANSec redhat root

References

3 references

URL	Tags
https://github.com/ingydotnet/yaml-libyaml-pm/iss…	issue-tracking
https://github.com/ingydotnet/yaml-libyaml-pm/pull/121	patch
https://github.com/ingydotnet/yaml-libyaml-pm/pull/122	patch

Impacted products

1 product

Vendor	Product	Version
TINITA	YAML::LibYAML	Affected: 0 , < 0.903.0 (custom)

Credits

@shlomif (Shlomi Fish)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 9.1,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-40908",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-06-02T03:22:02.219115Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-06-02T03:22:25.333Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "YAML-LibYAML",
          "product": "YAML::LibYAML",
          "programFiles": [
            "lib/YAML/XS.pm"
          ],
          "repo": "https://github.com/ingydotnet/yaml-libyaml-pm",
          "vendor": "TINITA",
          "versions": [
            {
              "lessThan": "0.903.0",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "@shlomif (Shlomi Fish)"
        }
      ],
      "descriptions": [
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          "lang": "en",
          "supportingMedia": [
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              "base64": false,
              "type": "text/html",
              "value": "YAML-LibYAML prior to 0.903.0 for Perl uses 2-args open, allowing existing files to be modified\u003cbr\u003e"
            }
          ],
          "value": "YAML-LibYAML prior to 0.903.0 for Perl uses 2-args open, allowing existing files to be modified"
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-23",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-23 File Content Injection"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-552",
              "description": "CWE-552 Files or Directories Accessible to External Parties",
              "lang": "en",
              "type": "CWE"
            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-01T13:41:48.168Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/ingydotnet/yaml-libyaml-pm/issues/120"
        },
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          "tags": [
            "patch"
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          "url": "https://github.com/ingydotnet/yaml-libyaml-pm/pull/121"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/ingydotnet/yaml-libyaml-pm/pull/122"
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "title": "YAML-LibYAML prior to 0.903.0 for Perl uses 2-args open, allowing existing files to be modified",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
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  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2025-40908",
    "datePublished": "2025-06-01T13:41:48.168Z",
    "dateReserved": "2025-04-16T09:05:34.360Z",
    "dateUpdated": "2025-06-02T03:22:25.333Z",
    "state": "PUBLISHED"
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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.

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.