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High, CVSS 7.0

Cotonti: Stored Cross-Site Scripting in the Personal File Storage (PFS) module

CVE-2026-55746GHSA-86hp-hf3j-3m8r

What to do

Vendor response not established. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • Packagist cotonti/cotonti

    Affected
    <= 1.0.0
    Fixed in
    no fixed version recorded

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
7.0 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N · score source
EPSS
  • CVE-2026-55746: 0.17% estimated exploitation activity in the next 30 days; percentile 6.54 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Cotonti 1.0.0 (master branch, commit f43f1fc3) is vulnerable to stored Cross-Site Scripting in the Personal File Storage (PFS) module. A folder title (pfftitle) is imported with the 'TXT' filter, which does not strip or encode HTML (the tag check in cotimport is disabled), so an authenticated user can store HTML/JavaScript in a folder title. In modules/pfs/inc/pfs.main.php the title is assigned to the template variable PFFROWTITLE without htmlspecialchars(), and modules/pfs/tpl/pfs.tpl outputs {PFFROWTITLE} unescaped. When the folder listing is viewed (including by other users for public folders), the injected script executes in the victim's browser.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-86hp-hf3j-3m8r

Agent brief

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# Patch Next advisory brief: CVE-2026-55746

Advisory: Cotonti: Stored Cross-Site Scripting in the Personal File Storage (PFS) module
IDs: CVE-2026-55746, GHSA-86hp-hf3j-3m8r
Record: https://patchnext.com/advisories/cve-2026-55746 (revision 1, source checked 26 Oct 2026, 14:49 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.0)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist cotonti/cotonti: affected <= 1.0.0

## Suggested inspection (read-only)
- Packagist cotonti/cotonti: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on cotonti/cotonti.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-86hp-hf3j-3m8r (GitHub-reviewed advisory GHSA-86hp-hf3j-3m8r lists affected ranges: Packagist cotonti/cotonti >=0 <=1.0.0)

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