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CVE-2018-1999016· NVD / CVE Program· CNA mitre

Pydio version 8.2.0 and earlier contains a Cross Site Scripting (XSS) vulnerability in ./core/vendor/meenie/javascript-packer/example-inline

Pydio version 8.2.0 and earlier contains a Cross Site Scripting (XSS) vulnerability in ./core/vendor/meenie/javascript-packer/example-inline.php line 48; ./core/vendor/dapphp/securimage/examples/test.mysql.static.php lines: 114,118 that can result in an unauthenticated remote attacker manipulating the web client via XSS code injection. This attack appear to be exploitable via the victim openning a specially crafted URL. This vulnerability appears to have been fixed in version 8.2.1.

MediumCVSS 6.1 · v3.0—No exploit Fix available
Published
Jul 23, 2018
Updated
Jun 16, 2026
EPSS
1.0% · 60th percentile
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Action score

24

Monitor

Low priority for now.

CVSS
24 / 40 · 6.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.0%

Noroxi analysis

No Noroxi analysis for this record yet

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Affected systems

VendorProduct
pydiopydio

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • pydio pydioup to 8.2.0 inclusive

Same product

pydio: all records

Other highest-scoring records for the same primary product.

  • CVE-2013-4267Ajaxeplorer before 5.0.1 allows remote attackers to execute arbitrary commands via shell metacharacters in the (1) archive_name parameter to
    40Plan
  • CVE-2019-9642An issue was discovered in proxy.php in pydio-core in Pydio through 8.2.2.
    40Plan
  • CVE-2018-20718In Pydio before 8.2.2, an attack is possible via PHP Object Injection because a user is allowed to use the $phpserial$a:0:{} syntax to store
    40Plan
  • CVE-2015-3431Pydio (formerly AjaXplorer) before 6.0.7 allows remote attackers to execute arbitrary commands via unspecified vectors, aka "Pydio OS Comman
    40Plan
  • CVE-2019-20453A problem was found in Pydio Core before 8.2.4 and Pydio Enterprise before 8.2.4.
    36Monitor
  • CVE-2019-20452A problem was found in Pydio Core before 8.2.4 and Pydio Enterprise before 8.2.4.
    36Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
n/a n/a8.2.1 · descriptionVendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

nvd-primary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records