cvelistv5 - cve-2026-82078

CVE-2026-82078 (GCVE-0-2026-82078)

Vulnerability from cvelistv5

Published

2026-08-28 11:45

Modified

2026-08-29 03:55

Severity ?

9.4 (Critical) - CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CWE

CWE-470 - Use of Externally-Controlled input to select classes or code ('unsafe reflection')

Summary

An unsafe dynamic class loading vulnerability exists in the database connection utilities of PaperCut MF and PaperCut NG. The application instantiates database driver classes based on configurable driver names without validating against an allowlist of approved drivers. If an attacker can manipulate system configuration parameters, this enables the execution of arbitrary Java bytecode residing on the application classpath under the security context of the PaperCut server process.

References

URL

Tags

https://www.papercut.com/kb/Main/security-bulletin-27-aug-2026-urgent-security-advisory/

Impacted products

	Vendor	Product	Version
	PaperCut	PaperCut MF/NG	Version: 0 ≤

Show details on NVD website

JSON

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CERTFR-2026-AVI-1095

Vulnerability from certfr_avis

De multiples vulnérabilités ont été découvertes dans Papercut. Elles permettent à un attaquant de contourner l'authentification et d'exécuter du code arbitraire à distance.

Papercut indique que ces vulnérabilités sont activement exploitées.

L'éditeur explique que le correctif bloque les requêtes SQL qui contiennent les instructions EXEC, EXECUTE ou CALL pour des recherches Card/ID number depuis une base de donnée externe.

Le CERT-FR recommande donc fortement l'application des correctifs dans les plus brefs délais.

Mesure de contournement

Papercut recommande de restreindre l'accès au serveur applicatif à des adresses IP dites de confiance, notamment par des règles de pare-feu.

Indicateurs de compromission

L'éditeur préconise de : * surveiller toute alerte en provenance d'outils de sécurité concernant le serveur applicatif Papercut et plus particulièrement toute activité anormale de la part de pc-app.exe ; * relever des fichiers server.log de Papercut manquants, tronqués ou supprimés ; * rechercher la présence des motifs ERROR No suitable driver found for jdbc:no:x ou ERROR DatabaseUtils - Database error looking up cardID: VALUES CAST dans server.log.

Papercut précise que la seule absence de ces indicateurs ne permet pas de déduire que les vulnérabilités n'ont pas été exploitées.

Solutions

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

Impacted products

	Vendor	Product	Description
	Papercut	Papercut	Papercut MF toutes versions antérieures à 24, 25 ou 26 sans le correctif de sécurité temporaire
	Papercut	Papercut	Papercut NG toutes versions antérieures à 24, 25 ou 26 sans le correctif de sécurité temporaire

References

Title

Publication Time

Tags

Bulletin de sécurité Papercut security-bulletin-27-aug-2026-urgent-security-advisory	2026-08-27	vendor-advisory
Billet de blogue Rapid7 du 28 août 2026	-	other

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Papercut MF toutes versions ant\u00e9rieures \u00e0 24, 25 ou 26 sans le correctif de s\u00e9curit\u00e9 temporaire",
      "product": {
        "name": "Papercut",
        "vendor": {
          "name": "Papercut",
          "scada": false
        }
      }
    },
    {
      "description": "Papercut NG toutes versions ant\u00e9rieures \u00e0 24, 25 ou 26 sans le correctif de s\u00e9curit\u00e9 temporaire",
      "product": {
        "name": "Papercut",
        "vendor": {
          "name": "Papercut",
          "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-2026-82078",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-82078"
    },
    {
      "name": "CVE-2026-81578",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-81578"
    }
  ],
  "initial_release_date": "2026-08-28T00:00:00",
  "last_revision_date": "2026-08-28T00:00:00",
  "links": [
    {
      "title": "Billet de blogue Rapid7 du 28 ao\u00fbt 2026",
      "url": "https://www.rapid7.com/blog/post/etr-papercut-ng-mf-critical-zero-day-exploited-in-the-wild/"
    }
  ],
  "reference": "CERTFR-2026-AVI-1095",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2026-08-28T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
    },
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Papercut. Elles permettent \u00e0 un attaquant de contourner l\u0027authentification et d\u0027ex\u00e9cuter du code arbitraire \u00e0 distance.\n\nPapercut indique que ces vuln\u00e9rabilit\u00e9s sont activement exploit\u00e9es.\n\nL\u0027\u00e9diteur explique que le correctif bloque les requ\u00eates SQL qui contiennent les instructions EXEC, EXECUTE ou CALL pour des recherches Card/ID number depuis une base de donn\u00e9e externe.\n\nLe CERT-FR recommande donc fortement l\u0027application des correctifs dans les plus brefs d\u00e9lais.\n\n## Mesure de contournement\n\nPapercut recommande de restreindre l\u0027acc\u00e8s au serveur applicatif \u00e0 des adresses IP dites de confiance, notamment par des r\u00e8gles de pare-feu.\n\n## Indicateurs de compromission\n\nL\u0027\u00e9diteur pr\u00e9conise de :\n* surveiller toute alerte en provenance d\u0027outils de s\u00e9curit\u00e9 concernant le serveur applicatif Papercut et plus particuli\u00e8rement toute activit\u00e9 anormale de la part de *pc-app.exe* ;\n* relever des fichiers *server.log* de Papercut manquants, tronqu\u00e9s ou supprim\u00e9s ; \n* rechercher la pr\u00e9sence des motifs \u003ccode\u003eERROR No suitable driver found for jdbc:no:x\u003c/code\u003e ou \u003ccode\u003eERROR DatabaseUtils - Database error looking up cardID: VALUES CAST\u003c/code\u003e dans *server.log*.\n\nPapercut pr\u00e9cise que la seule absence de ces indicateurs ne permet pas de d\u00e9duire que les vuln\u00e9rabilit\u00e9s n\u0027ont pas \u00e9t\u00e9 exploit\u00e9es.",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans Papercut",
  "vendor_advisories": [
    {
      "published_at": "2026-08-27",
      "title": "Bulletin de s\u00e9curit\u00e9 Papercut security-bulletin-27-aug-2026-urgent-security-advisory",
      "url": "https://www.papercut.com/kb/Main/security-bulletin-27-aug-2026-urgent-security-advisory/"
    }
  ]
}

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-2026-82078 (GCVE-0-2026-82078)

Vulnerability from cvelistv5

CERTFR-2026-AVI-1095

Vulnerability from certfr_avis

Mesure de contournement

Indicateurs de compromission

Solutions

Tags

Sightings

Nomenclature