Vulnerability-Lookup

oesa-2026-3404

Vulnerability from osv_openeuler

Published

2026-08-20 09:54

Modified

2026-08-20 09:54

Summary

perl-XML-LibXML security update

Details

This module is Perl Binding for libxml2, which implements a Perl interface to the GNOME libxml2 library. This module provides interfaces for parsing and manipulating XML files and allows Perl programmers to use the highly capable validating XML parser and the high performance DOM implementation.

Security Fix(es):

XML::LibXML versions through 2.0210 for Perl read out-of-bounds heap memory when parsing XML node names containing truncated UTF-8 byte sequences.

A node name ending in the middle of a multi byte UTF-8 sequence causes the parser to read past the end of the input string into adjacent heap memory.

Any Perl process that passes attacker controlled strings to XML::LibXML's DOM node-name methods can reach this path on the default API. The likely consequence is a crash, causing denial of service.(CVE-2026-8177)

Severity

7.5 (High)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-8177	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "perl-XML-LibXML-2.0134-2.oe2003sp4.aarch64.rpm",
          "perl-XML-LibXML-debuginfo-2.0134-2.oe2003sp4.aarch64.rpm",
          "perl-XML-LibXML-debugsource-2.0134-2.oe2003sp4.aarch64.rpm",
          "perl-XML-LibXML-help-2.0134-2.oe2003sp4.aarch64.rpm"
        ],
        "src": [
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          "perl-XML-LibXML-debuginfo-2.0134-2.oe2003sp4.x86_64.rpm",
          "perl-XML-LibXML-debugsource-2.0134-2.oe2003sp4.x86_64.rpm",
          "perl-XML-LibXML-help-2.0134-2.oe2003sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP4",
        "name": "perl-XML-LibXML",
        "purl": "pkg:rpm/openEuler/perl-XML-LibXML\u0026distro=openEuler-20.03-LTS-SP4"
      },
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          "perl-XML-LibXML-debugsource-2.0207-5.oe2203sp4.aarch64.rpm"
        ],
        "noarch": [
          "perl-XML-LibXML-help-2.0207-5.oe2203sp4.noarch.rpm"
        ],
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        ],
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          "perl-XML-LibXML-debugsource-2.0207-5.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "perl-XML-LibXML",
        "purl": "pkg:rpm/openEuler/perl-XML-LibXML\u0026distro=openEuler-22.03-LTS-SP4"
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  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "This module is Perl Binding for libxml2, which implements a Perl interface to the GNOME libxml2 library. This module provides interfaces for parsing and manipulating XML files and allows Perl programmers to use the highly capable validating XML parser and the high performance DOM implementation.\r\n\r\nSecurity Fix(es):\n\nXML::LibXML versions through 2.0210 for Perl read out-of-bounds heap memory when parsing XML node names containing truncated UTF-8 byte sequences.\n\nA node name ending in the middle of a multi byte UTF-8 sequence causes the parser to read past the end of the input string into adjacent heap memory.\n\nAny Perl process that passes attacker controlled strings to XML::LibXML\u0026apos;s DOM node-name methods can reach this path on the default API. The likely consequence is a crash, causing denial of service.(CVE-2026-8177)",
  "id": "OESA-2026-3404",
  "modified": "2026-08-20T09:54:29Z",
  "published": "2026-08-20T09:54:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3404"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8177"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "perl-XML-LibXML security update",
  "upstream": [
    "CVE-2026-8177"
  ]
}

CVE-2026-8177 (GCVE-0-2026-8177)

Vulnerability from cvelistv5 – Published: 2026-05-10 20:48 – Updated: 2026-09-01 12:04

Title

XML::LibXML versions through 2.0210 for Perl read out-of-bounds heap memory when parsing XML node names containing truncated UTF-8 byte sequences

Summary

XML::LibXML versions through 2.0210 for Perl read out-of-bounds heap memory when parsing XML node names containing truncated UTF-8 byte sequences. A node name ending in the middle of a multi byte UTF-8 sequence causes the parser to read past the end of the input string into adjacent heap memory. Any Perl process that passes attacker controlled strings to XML::LibXML's DOM node-name methods can reach this path on the default API. The likely consequence is a crash, causing denial of service.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-11 16:34 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

CPANSec redhat root

References

11 references

URL	Tags
https://github.com/cpan-authors/XML-LibXML/issues/146	issue-tracking
https://github.com/cpan-authors/XML-LibXML/pull/149	issue-tracking
https://github.com/cpan-authors/XML-LibXML/commit…	patch
http://www.openwall.com/lists/oss-security/2026/05/10/8
http://www.openwall.com/lists/oss-security/2026/05/11/2
https://access.redhat.com/security/cve/CVE-2026-8177	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2468684	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:39547	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:39878	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:39553	vendor-advisoryx_refsource_REDHAT

Impacted products

7 products

Vendor	Product	Version
SHLOMIF	XML::LibXML	Affected: 0 , ≤ 2.0210 (custom)
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 1:2.0210-4.el10_2.1 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 1:2.0132-3.el8_10 , < * (rpm) cpe:/a:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 1:2.0206-5.el9_8.1 , < * (rpm) cpe:/a:redhat:enterprise_linux:9
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 OpenShift Container Platform 4	cpe:/a:redhat:openshift:4

Show details on NVD website

JSON

To clipboard

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        "dateUpdated": "2026-05-10T23:33:30.265Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/cpan-authors/XML-LibXML/issues/146"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/cpan-authors/XML-LibXML/pull/149"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/cpan-authors/XML-LibXML/commit/15652bd905a6c9dda59a81b14d4766adbbae2ea8.patch"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to a future XML::LibXML release, or apply the upstream patch."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2026-05-08T00:00:00.000Z",
          "value": "Patch submitted in upstream PR."
        }
      ],
      "title": "XML::LibXML versions through 2.0210 for Perl read out-of-bounds heap memory when parsing XML node names containing truncated UTF-8 byte sequences",
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-8177",
    "datePublished": "2026-05-10T20:48:51.816Z",
    "dateReserved": "2026-05-08T15:36:17.532Z",
    "dateUpdated": "2026-09-01T12:04:55.392Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.