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jDownloads extension for Joomla path traversal in update_file handling

CVE-2026-117542EUVD-2026-124612GHSA-VRWX-F3JM-XP57

5.1MediumCNA
Exploited
No known exploitation
Fix
See vendor advisory
Who is exposed
Not reported
Published
Last modified
Reference
Last checked
0.51% · 44th percentile
13/100 · provisional
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

The jDownloads extension for Joomla has a path traversal flaw that a logged-in user with high privileges can reach remotely over the network. By manipulating the update_file form parameter, that user can move files from outside the permitted selection directory or attach them to a download, which may expose file contents and remove source files from their original locations.

Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.

Read the original description

Joomla Extension - jdownloads.com - Authenticated path traversal in jDownloads < 4.1.8 - A manipulated update_file form parameter could bypass the intended server-file selection restrictions and move files from outside the permitted selection directory or assign them to a download. This could expose file contents and remove source files from their original locations.

cve.now Index

13Pcve.now Index 13 of 100 · methodology v3 · provisional
  • Exploitation0/40No signal
  • Exposure3/25Reachable over the network · Unknown: No advisory context yet
  • Reach?/20Unknown. No tracked technology or package matched
  • Severity5.1/10CVSS 5.1
  • No patch5/5No fixed version listed; see vendor advisory

What would change the score

  • Would score about 68 if added to CISA KEV
  • Would score about 63 if CISA's SSVC rates exploitation active
  • Would score about 32 if advisories confirm default setups are exposed

Check your systems with an agent

Paste this into a coding or ops agent. It checks your systems read-only and reports a table per asset.

Check whether my systems are affected by CVE-2026-117542 (Joomla Extension - jdownloads.com - Authenticated path traversal in jDownloads < 4.1.8), using the cve.now data below.

Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.

What cve.now has for CVE-2026-117542 (entry last updated 2026-11-13):
Affected:
- jdownloads.com jDownloads extension for Joomla: versions 1.0.0-4.1.7
Fixed versions: none listed yet.
Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory.
CISA KEV: CVE-2026-117542 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-117542 only. If you also check another CVE, look up its own KEV status; never assume it from this one.

How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.

Verify against the linked advisories before concluding, and cite the date you read each one:
- https://www.jdownloads.com/
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.

Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.

Entry: https://cve.now/CVE-2026-117542
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example execute with name cve.get and arguments {"id": "CVE-2026-117542"}.

Timeline

  1. CVE published
  2. First seen by cve.now
  3. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

    1 day
  4. Record last updated

Affected versions

  • jdownloads.com jDownloads extension for Joomla

    1.0.0-4.1.7

Evidence 3

Vendor advisory · 1

Establishes: Affected and fixed versions.

  1. Link

CVE record · 2

Establishes: The identifier and description.

  1. Record
  2. Record

Corrections

None so far.

Something wrong on this page? Report an error. Every fix is listed here.

Questions about CVE-2026-117542

Is CVE-2026-117542 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data

Which versions are affected by CVE-2026-117542?

jDownloads extension for Joomla: version 1.0.0-4.1.7.Source: cve.now feed data