cvelistv5 - cve-2026-6103

CVE-2026-6103 (GCVE-0-2026-6103)

Vulnerability from cvelistv5

Published

2026-09-25 20:08

Modified

2026-09-25 20:41

Severity ?

4.3 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

CWE

CWE-190 - Integer overflow or wraparound

Summary

phar_tar_number() parses the octal size field of a TAR header into a uint32_t with no overflow check. The field is 11 octal digits wide and holds values up to 0x1FFFFFFFF, so a size above 0xFFFFFFFF silently wraps. The parser then skips the wrong number of data blocks and interprets attacker-controlled file content as the next TAR header, which lets a crafted archive inject entries that PharData reports and extracts as if they were genuine.

References

URL

Tags

https://github.com/php/php-src/security/advisories/GHSA-j3wh-g957-2m85

vendor-advisory

Impacted products

	Vendor	Product	Version
	PHP Group	PHP	Version: 8.2.* ≤ Version: 8.3.* ≤ Version: 8.4.* ≤ Version: 8.5.* ≤

Show details on NVD website

JSON

To clipboard

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CERTFR-2026-AVI-1227

Vulnerability from certfr_avis

De multiples vulnérabilités ont été découvertes dans PHP. Certaines d'entre elles permettent à un attaquant de provoquer un déni de service à distance, une atteinte à la confidentialité des données et une atteinte à l'intégrité des données.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

Vendor	Product	Description
PHP	PHP	PHP versions 8.4.x antérieures à 8.4.26
PHP	PHP	PHP versions 8.2.x antérieures à 8.2.34
PHP	PHP	PHP versions 8.3.x antérieures à 8.3.35
PHP	PHP	PHP versions 8.5.x antérieures à 8.5.11

References

Title

Publication Time

Tags

Bulletin de sécurité PHP 8.3.35

2026-09-24

vendor-advisory

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "PHP versions 8.4.x ant\u00e9rieures \u00e0 8.4.26",
      "product": {
        "name": "PHP",
        "vendor": {
          "name": "PHP",
          "scada": false
        }
      }
    },
    {
      "description": "PHP versions 8.2.x ant\u00e9rieures \u00e0 8.2.34",
      "product": {
        "name": "PHP",
        "vendor": {
          "name": "PHP",
          "scada": false
        }
      }
    },
    {
      "description": "PHP versions 8.3.x ant\u00e9rieures \u00e0 8.3.35",
      "product": {
        "name": "PHP",
        "vendor": {
          "name": "PHP",
          "scada": false
        }
      }
    },
    {
      "description": "PHP versions 8.5.x ant\u00e9rieures \u00e0 8.5.11",
      "product": {
        "name": "PHP",
        "vendor": {
          "name": "PHP",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": "",
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [
    {
      "name": "CVE-2025-14181",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-14181"
    },
    {
      "name": "CVE-2026-91765",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-91765"
    },
    {
      "name": "CVE-2026-92842",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-92842"
    },
    {
      "name": "CVE-2026-91767",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-91767"
    },
    {
      "name": "CVE-2026-91766",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-91766"
    },
    {
      "name": "CVE-2026-91769",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-91769"
    },
    {
      "name": "CVE-2026-93682",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-93682"
    },
    {
      "name": "CVE-2026-91768",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-91768"
    },
    {
      "name": "CVE-2026-6103",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-6103"
    },
    {
      "name": "CVE-2025-1218",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-1218"
    },
    {
      "name": "CVE-2026-17545",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-17545"
    }
  ],
  "initial_release_date": "2026-09-24T00:00:00",
  "last_revision_date": "2026-09-24T00:00:00",
  "links": [],
  "reference": "CERTFR-2026-AVI-1227",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2026-09-24T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "D\u00e9ni de service \u00e0 distance"
    },
    {
      "description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
    },
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    },
    {
      "description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans PHP. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer un d\u00e9ni de service \u00e0 distance, une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es et une atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es.",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans PHP",
  "vendor_advisories": [
    {
      "published_at": "2026-09-24",
      "title": "Bulletin de s\u00e9curit\u00e9 PHP 8.3.35",
      "url": "https://www.php.net/ChangeLog-8.php#8.3.35"
    }
  ]
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

CVE-2026-6103 (GCVE-0-2026-6103)

Vulnerability from cvelistv5

CERTFR-2026-AVI-1227

Vulnerability from certfr_avis

Solutions

Tags

Sightings

Nomenclature