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CVE-2026-54134Suited to automated attack · CISA

OctoPrint: File exfiltration possible via query parameters on upload endpoints

CVSS score

7.0

EPSS probability

%0.3

Risk score

0.0

Published

1 mo ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

Impact on My Inventory

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Vulnerability description

DayBreach CVE AI Research

CVE-2026-54134 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

OctoPrint provides a web interface for controlling consumer 3D printers. Prior to 1.11.8 and 2.0.0rc3, OctoPrint's custom Tornado upload handler and Flask with Werkzeug parse request parameters differently, allowing an attacker with FILE_UPLOAD permission to inject reserved internal upload fields through query parameters or parser differentials despite the earlier GHSA-m9jh-jf9h-x3h2 fix. The affected endpoints are /api/files/{local|sdcard}, /api/languages, /plugin/backup/restore, and /plugin/pluginmanager/upload_file. An attacker can make OctoPrint treat an arbitrary host file as a temporary upload, move it into a downloadable upload directory, disclose configuration secrets or other readable files, and remove runtime files in a way that can affect a later restart. This issue is fixed in versions 1.11.8 and 2.0.0rc3.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-54134 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1OctoPrintOctoPrint View
2pypiOctoPrint View
3pypiOctoPrint View
4pypiOctoPrint View
Total affected vendors: 2|Products: 4

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
7.0CVSS 4.0—Vector not publishedGitHub Advisory
7.0CVSS V4_0HIGHCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:NCVE CNA
7.0CVSS V40HIGHCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

osvoctoprint1.11.8

OSV düzeltilmiş sürüm: 1.11.8

osvoctoprint2.0.0rc3

OSV düzeltilmiş sürüm: 2.0.0rc3

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Apply the official update named in the evidence only to the matching product and version.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-54134 is associated with the following CWEs:

CWE-73: Common Weakness Enumeration Entry CWE-73CWE-436: Common Weakness Enumeration Entry CWE-436

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-54134 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureBitişik ağ
PermissionsLow
UserGerekmiyor

Official Sources and Advisories

https://github.com/OctoPrint/OctoPrint/security/advisories/GHSA-j4h9-pm27-4rfwvendor-advisoryhttps://github.com/OctoPrint/OctoPrint/commit/579148beeb6d6e9b3d41b1cf32309b47218ed380vendor-advisoryhttps://github.com/OctoPrint/OctoPrint/commit/8e3348197db867c30a32d13984f0bd0d664be413vendor-advisoryhttps://github.com/OctoPrint/OctoPrint/releases/tag/1.11.8vendor-advisoryhttps://github.com/OctoPrint/OctoPrint/releases/tag/2.0.0rc3vendor-advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2026-54134vendor-advisoryhttps://github.com/pypa/advisory-database/tree/main/vulns/octoprint/PYSEC-2026-2687.yamlvendor-advisoryhttps://github.com/advisories/GHSA-j4h9-pm27-4rfwvendor-advisoryhttps://github.com/OctoPrint/OctoPrintvendor-advisoryhttps://pypi.org/project/octoprintvendor-advisory

CVSS Vector Radar Chart

7.0 / 10
Attack VectorAdjacentComplexityLowPrivilegesLowUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityNone

Vulnerability Scoring Details

CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Attack VectorAdjacent network
Attack ComplexityLow
Privileges RequiredLow privileges
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)None

Yama doğrulandı

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

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OctoPrint
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pypi

Weakness Type (CWE & CAPEC)

CWE-73 CWE-436

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