Vulnerability-Lookup

SUSE-SU-2026:22189-1

Vulnerability from csaf_suse - Published: 2026-06-20 06:49 - Updated: 2026-09-16 19:57

Summary

Security update for perl-HTML-Parser

Severity

Moderate

Notes

Title of the patch: Security update for perl-HTML-Parser

Description of the patch: This update for perl-HTML-Parser fixes the following issue - CVE-2026-8829: HTML:Entities versions before 3.84 for Perl read freed heap memory in _decode_entities (bsc#1267606).

Patchnames: SUSE-SLES-16.0-991

CVE-2026-8829

4.8 (Medium)


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

Affected products

Recommended 8 products

Product	Version	Remediation
Unresolved product id: SUSE Linux Enterprise Server 16.0:perl-HTML-Parser-3.830.0-160000.3.1.aarch64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 16.0:perl-HTML-Parser-3.830.0-160000.3.1.ppc64le	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 16.0:perl-HTML-Parser-3.830.0-160000.3.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 16.0:perl-HTML-Parser-3.830.0-160000.3.1.x86_64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP applications 16.0:perl-HTML-Parser-3.830.0-160000.3.1.aarch64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP applications 16.0:perl-HTML-Parser-3.830.0-160000.3.1.ppc64le	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP applications 16.0:perl-HTML-Parser-3.830.0-160000.3.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP applications 16.0:perl-HTML-Parser-3.830.0-160000.3.1.x86_64	—	Vendor Fix

Threats

Impact moderate

References

8 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/s…	self
https://www.suse.com/support/update/announcement/…	self
https://lists.suse.com/pipermail/sle-updates/2026…	self
https://bugzilla.suse.com/1267606	self
https://www.suse.com/security/cve/CVE-2026-8829/	self
https://www.suse.com/security/cve/CVE-2026-8829	external
https://bugzilla.suse.com/1267606	external

JSON

To clipboard

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  "vulnerabilities": [
    {
      "cve": "CVE-2026-8829",
      "ids": [
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          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-8829"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities.\n\nThe XS routine backing HTML::Entities::_decode_entities cached a pointer (repl) into the entity-value SV returned by hv_fetch on the entity2char hash. When the input SV was identical to a value SV in that hash, and that value contained its own key as an entity reference, a later call to grow_gap() reallocated the SV\u0027s PV buffer and freed the backing allocation that repl still pointed into. The subsequent copy loop read repl_len bytes from the freed allocation.\n\nThe read may disclose adjacent heap contents into the destination SV.",
          "title": "CVE description"
        }
      ],
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        },
        {
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          "url": "https://bugzilla.suse.com/1267606"
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      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L",
            "version": "3.1"
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      "threats": [
        {
          "category": "impact",
          "date": "2026-06-20T06:49:45Z",
          "details": "moderate"
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      "title": "CVE-2026-8829"
    }
  ]
}

CVE-2026-8829 (GCVE-0-2026-8829)

Vulnerability from cvelistv5 – Published: 2026-06-04 02:03 – Updated: 2026-06-28 11:34

Title

HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities

Summary

HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities. The XS routine backing HTML::Entities::_decode_entities cached a pointer (repl) into the entity-value SV returned by hv_fetch on the entity2char hash. When the input SV was identical to a value SV in that hash, and that value contained its own key as an entity reference, a later call to grow_gap() reallocated the SV's PV buffer and freed the backing allocation that repl still pointed into. The subsequent copy loop read repl_len bytes from the freed allocation. The read may disclose adjacent heap contents into the destination SV.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-04 12:59 UTC

CWE

CWE-416 - Use After Free

Assigner

CPANSec redhat root Scorecard

References

4 references

URL	Tags
https://github.com/libwww-perl/HTML-Parser/pull/56	patch
https://github.com/libwww-perl/HTML-Parser/commit…	patch
http://www.openwall.com/lists/oss-security/2026/06/04/2
https://lists.debian.org/debian-lts-announce/2026…

Impacted products

1 product

Vendor	Product	Version
OALDERS	HTML::Entities	Affected: 0 , < 3.84 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-06-28T11:34:26.121Z",
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          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2026/06/msg00044.html"
          }
        ],
        "title": "CVE Program Container"
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        "metrics": [
          {
            "cvssV3_1": {
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              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
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          {
            "other": {
              "content": {
                "id": "CVE-2026-8829",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-04T12:59:04.771815Z",
                "version": "2.0.3"
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        ],
        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
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          "packageName": "HTML-Parser",
          "product": "HTML::Entities",
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            {
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              "status": "affected",
              "version": "0",
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      "descriptions": [
        {
          "lang": "en",
          "value": "HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities.\n\nThe XS routine backing HTML::Entities::_decode_entities cached a pointer (repl) into the entity-value SV returned by hv_fetch on the entity2char hash. When the input SV was identical to a value SV in that hash, and that value contained its own key as an entity reference, a later call to grow_gap() reallocated the SV\u0027s PV buffer and freed the backing allocation that repl still pointed into. The subsequent copy loop read repl_len bytes from the freed allocation.\n\nThe read may disclose adjacent heap contents into the destination SV."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "CWE-416 Use After Free",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-04T02:03:46.702Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/libwww-perl/HTML-Parser/pull/56"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/libwww-perl/HTML-Parser/commit/6922552b0778c90a9587a3894e248be4d3a25e1c.patch"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to HTML-Parser 3.84 or later."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2026-05-12T00:00:00.000Z",
          "value": "Issue reported."
        },
        {
          "lang": "en",
          "time": "2026-05-19T00:00:00.000Z",
          "value": "HTML-Parser 3.84 released."
        }
      ],
      "title": "HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities",
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-8829",
    "datePublished": "2026-06-04T02:03:46.702Z",
    "dateReserved": "2026-05-18T13:24:05.252Z",
    "dateUpdated": "2026-06-28T11:34:26.121Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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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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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

SUSE-SU-2026:22189-1

CVE-2026-8829 (GCVE-0-2026-8829)

Tags

Sightings

Nomenclature

Related by attack behaviour