Vulnerability-Lookup

UBUNTU-CVE-2025-11731 (CVE-2025-11731)

Vulnerability from osv_ubuntu – Published: 2025-10-14 06:15 – Updated: 2026-05-20 15:16 – Source website

Details

A flaw was found in the exsltFuncResultComp() function of libxslt, which handles EXSLT elements during stylesheet parsing. Due to improper type handling, the function may treat an XML document node as a regular XML element node, resulting in a type confusion. This can cause unexpected memory reads and potential crashes. While difficult to exploit, the flaw could lead to application instability or denial of service.

Severity

3.1 (Low)


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

N/A (UNKNOWN)

low

References

URL

Type

	https://ubuntu.com/security/CVE-2025-11731	REPORT
	https://www.cve.org/CVERecord?id=CVE-2025-11731	REPORT
	https://access.redhat.com/security/cve/CVE-2025-11731	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxslt1.1",
            "binary_version": "1.1.28-2ubuntu0.2+esm5"
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          {
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            "binary_version": "1.1.28-2ubuntu0.2+esm5"
          },
          {
            "binary_name": "xsltproc",
            "binary_version": "1.1.28-2ubuntu0.2+esm5"
          }
        ],
        "priority_reason": "Upstream rates this as being low severity"
      },
      "package": {
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        "name": "libxslt",
        "purl": "pkg:deb/ubuntu/libxslt@1.1.28-2ubuntu0.2+esm5?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.28-2",
        "1.1.28-2build1",
        "1.1.28-2ubuntu0.1",
        "1.1.28-2ubuntu0.2",
        "1.1.28-2ubuntu0.2+esm1",
        "1.1.28-2ubuntu0.2+esm2",
        "1.1.28-2ubuntu0.2+esm3",
        "1.1.28-2ubuntu0.2+esm4",
        "1.1.28-2ubuntu0.2+esm5"
      ]
    },
    {
      "ecosystem_specific": {
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          {
            "binary_name": "libxslt1.1",
            "binary_version": "1.1.28-2.1ubuntu0.3+esm4"
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          {
            "binary_name": "python-libxslt1",
            "binary_version": "1.1.28-2.1ubuntu0.3+esm4"
          },
          {
            "binary_name": "xsltproc",
            "binary_version": "1.1.28-2.1ubuntu0.3+esm4"
          }
        ],
        "priority_reason": "Upstream rates this as being low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libxslt",
        "purl": "pkg:deb/ubuntu/libxslt@1.1.28-2.1ubuntu0.3+esm4?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
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        "1.1.28-2.1",
        "1.1.28-2.1ubuntu0.1",
        "1.1.28-2.1ubuntu0.2",
        "1.1.28-2.1ubuntu0.3",
        "1.1.28-2.1ubuntu0.3+esm1",
        "1.1.28-2.1ubuntu0.3+esm2",
        "1.1.28-2.1ubuntu0.3+esm3",
        "1.1.28-2.1ubuntu0.3+esm4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxslt1.1",
            "binary_version": "1.1.29-5ubuntu0.3+esm3"
          },
          {
            "binary_name": "python-libxslt1",
            "binary_version": "1.1.29-5ubuntu0.3+esm3"
          },
          {
            "binary_name": "xsltproc",
            "binary_version": "1.1.29-5ubuntu0.3+esm3"
          }
        ],
        "priority_reason": "Upstream rates this as being low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libxslt",
        "purl": "pkg:deb/ubuntu/libxslt@1.1.29-5ubuntu0.3+esm3?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
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      ],
      "versions": [
        "1.1.29-2.1ubuntu1",
        "1.1.29-4",
        "1.1.29-5",
        "1.1.29-5ubuntu0.1",
        "1.1.29-5ubuntu0.2",
        "1.1.29-5ubuntu0.3",
        "1.1.29-5ubuntu0.3+esm1",
        "1.1.29-5ubuntu0.3+esm2",
        "1.1.29-5ubuntu0.3+esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxslt1.1",
            "binary_version": "1.1.34-4ubuntu0.20.04.3+esm2"
          },
          {
            "binary_name": "xsltproc",
            "binary_version": "1.1.34-4ubuntu0.20.04.3+esm2"
          }
        ],
        "priority_reason": "Upstream rates this as being low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "libxslt",
        "purl": "pkg:deb/ubuntu/libxslt@1.1.34-4ubuntu0.20.04.3+esm2?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
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              "introduced": "0"
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          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.33-0ubuntu1",
        "1.1.33-0ubuntu2",
        "1.1.33-0ubuntu3",
        "1.1.34-1",
        "1.1.34-1ubuntu1",
        "1.1.34-3",
        "1.1.34-4",
        "1.1.34-4ubuntu0.20.04.1",
        "1.1.34-4ubuntu0.20.04.2",
        "1.1.34-4ubuntu0.20.04.3",
        "1.1.34-4ubuntu0.20.04.3+esm1",
        "1.1.34-4ubuntu0.20.04.3+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxslt1.1",
            "binary_version": "1.1.34-4ubuntu0.22.04.5"
          },
          {
            "binary_name": "xsltproc",
            "binary_version": "1.1.34-4ubuntu0.22.04.5"
          }
        ],
        "priority_reason": "Upstream rates this as being low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libxslt",
        "purl": "pkg:deb/ubuntu/libxslt@1.1.34-4ubuntu0.22.04.5?arch=source\u0026distro=jammy"
      },
      "ranges": [
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          ],
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      ],
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        "1.1.34-4",
        "1.1.34-4build1",
        "1.1.34-4build2",
        "1.1.34-4ubuntu0.22.04.1",
        "1.1.34-4ubuntu0.22.04.2",
        "1.1.34-4ubuntu0.22.04.3",
        "1.1.34-4ubuntu0.22.04.4",
        "1.1.34-4ubuntu0.22.04.5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxslt1.1",
            "binary_version": "1.1.39-0exp1ubuntu0.24.04.3"
          },
          {
            "binary_name": "xsltproc",
            "binary_version": "1.1.39-0exp1ubuntu0.24.04.3"
          }
        ],
        "priority_reason": "Upstream rates this as being low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libxslt",
        "purl": "pkg:deb/ubuntu/libxslt@1.1.39-0exp1ubuntu0.24.04.3?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
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        "1.1.35-1",
        "1.1.39-0exp1",
        "1.1.39-0exp1build1",
        "1.1.39-0exp1ubuntu0.24.04.1",
        "1.1.39-0exp1ubuntu0.24.04.2",
        "1.1.39-0exp1ubuntu0.24.04.3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libxslt1.1",
            "binary_version": "1.1.43-0.1"
          },
          {
            "binary_name": "xsltproc",
            "binary_version": "1.1.43-0.1"
          }
        ],
        "priority_reason": "Upstream rates this as being low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "libxslt",
        "purl": "pkg:deb/ubuntu/libxslt@1.1.43-0.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.39-0exp1ubuntu4",
        "1.1.43-0exp1",
        "1.1.43-0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libxslt1.1",
            "binary_version": "1.1.43-0.3"
          },
          {
            "binary_name": "xsltproc",
            "binary_version": "1.1.43-0.3"
          }
        ],
        "priority_reason": "Upstream rates this as being low severity"
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
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      },
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            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.43-0.1"
      ]
    }
  ],
  "aliases": [],
  "details": "A flaw was found in the exsltFuncResultComp() function of libxslt, which handles EXSLT \u003cfunc:result\u003e elements during stylesheet parsing. Due to improper type handling, the function may treat an XML document node as a regular XML element node, resulting in a type confusion. This can cause unexpected memory reads and potential crashes. While difficult to exploit, the flaw could lead to application instability or denial of service.",
  "id": "UBUNTU-CVE-2025-11731",
  "modified": "2026-05-20T15:16:01Z",
  "published": "2025-10-14T06:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-11731"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-11731"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-11731"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-11731"
  ]
}

CVE-2025-11731 (GCVE-0-2025-11731)

Vulnerability from cvelistv5 – Published: 2025-10-14 06:02 – Updated: 2026-09-01 12:08

Title

Libxslt: type confusion in exsltfuncresultcompfunction of libxslt

Summary

A flaw was found in the exsltFuncResultComp() function of libxslt, which handles EXSLT <func:result> elements during stylesheet parsing. Due to improper type handling, the function may treat an XML document node as a regular XML element node, resulting in a type confusion. This can cause unexpected memory reads and potential crashes. While difficult to exploit, the flaw could lead to application instability or denial of service.

Severity

3.1 (Low)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-14 15:18 UTC

CWE

CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')

Assigner

redhat redhat root Scorecard

References

5 references

URL	Tags
https://access.redhat.com/errata/RHSA-2026:11015	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2025-11731	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2403688	issue-trackingx_refsource_REDHAT
https://gitlab.gnome.org/GNOME/libxslt/-/issues/151
https://gitlab.gnome.org/GNOME/libxslt/-/merge_re…

Impacted products

8 products

Vendor	Product	Version
		Affected: 0 , < 1.1.44 (semver)
Red Hat	Red Hat Hardened Images	Unaffected: 1.1.45-0.1.hum1 , < * (rpm) cpe:/a:redhat:hummingbird:1
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4

Date Public

2025-10-14 00:00

Credits

Red Hat would like to thank Google Big Sleep for reporting this issue.

Show details on NVD website

JSON

To clipboard

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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.

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

UBUNTU-CVE-2025-11731 (CVE-2025-11731)

CVE-2025-11731 (GCVE-0-2025-11731)

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Related by attack behaviour