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CVE-2026-120315

LobeHub Chat 1.84.26 before 2.1.49 Path Traversal RCE via writeTempFile

CVSS score

8.7

EPSS probability

—

Risk score

0.9

Published

3 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

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Vulnerability description

DayBreach AI Explanation

Verified against sources

CVE-2026-120315: LobeHub Chat Path Traversal RCE Vulnerability

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

LobeHub Chat versions 1.84.26 through 2.1.49 contain a path traversal vulnerability via writeTempFile() due to unsanitized file names. Authenticated users can write arbitrary files to achieve remote code execution or denial of service.

Why does it matter?

This vulnerability allows authenticated attackers to overwrite critical application files, leading to remote code execution or service disruption. Its high CVSS score highlights significant risks to system integrity.

What should be done?

  • Follow vendor advisory guidance
  • Upgrade to version 2.1.49 or later where unaffected
  • Review input sanitization controls
Chain of evidence and sources2 verified claims

LobeHub Chat 1.84.26 ile 2.1.49 arasındaki sürümler, writeTempFile() fonksiyonundaki dizin geçişi açığından etkilenmektedir.

S0 · daybreach-canonicalS1 · cvelist

Saldırganlar file.createFile kullanarak dosya kaydı oluşturabilir ve startServer.js gibi uygulama dosyalarının üzerine yazabilir.

S0 · daybreach-canonicalS1 · cvelist
Show the technical text from the sources

LobeHub Chat from 1.84.26 before 2.1.49 contains a path traversal vulnerability that allows authenticated users to write arbitrary files by supplying unsanitized file names to writeTempFile(). Attackers can create a file record via file.createFile with a traversal name, then trigger document parsing to overwrite application files like startServer.js for code execution or denial of service.

CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CWE: CWE-22

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-120315 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1lobehubchat View
Total affected vendors: 1|Products: 1

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
8.8CVSS V3_1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE CNA
8.8CVSS V31HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HNVD
8.7CVSS V4_0HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NCVE CNA
8.7CVSS V40HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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 status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
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-2026-120315 is associated with the following CWEs:

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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-2026-120315 weaknesses.

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

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsLow
UserGerekmiyor

Official Sources and Advisories

GitHub Security Advisory (GHSA-2g9j-v25c-4j97)vendor-advisoryVulnCheck Advisory: LobeHub Chat 1.84.26 before 2.1.49 Path Traversal RCE via writeTempFilevendor-advisory

CVSS Vector Radar Chart

8.7 / 10
Attack VectorNetworkComplexityLowPrivilegesLowUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

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

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

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Weakness Type (CWE & CAPEC)

CWE-22

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CVE-2026-120315 · LobeHub Chat 1.84.26 before 2.1.49 Path…