Vulnerability report

Exploitation Attempts Observed Confirmed Confidence Not in CISA KEV

CVE-2016-20080

Brandfolder Path Traversal

Brandfolder · 0 to <= 3.0

Watch CVE-2016-20080 Browse KEV feed
Severity
CVSS 6.9 · Medium
Confidence
Confirmed
Exploit status
Exploitation Attempts Observed in the Wild
EPSS
0.4%
First observed
21 Jun 2026
Last observed
28 Oct 2026

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2016-20080 is an unauthenticated vulnerability affecting Brandfolder.

Have exploitation attempts been observed?

Yes. Previdian sensors have observed 18 exploitation attempts, 9 unique attacker IPs, and 6 countries targeting CVE-2016-20080. First observed Jun 21, 2026; last observed Oct 28, 2026. Also reported by third-party sources. Confidence is confirmed.

Who is affected?

Brandfolder 0 to <= 3.0.

What should we do?

Patch immediately, validate internet-facing exposure, and monitor for matching requests.

Overview

Brandfolder Path Traversal

WordPress Brandfolder plugin version 3.0 and earlier contains a local file inclusion vulnerability in callback.php that allows unauthenticated attackers to include arbitrary files by manipulating the wp_abspath parameter.

Attackers can supply path traversal sequences or remote URLs through the wp_abspath parameter to read sensitive files like wp-config.php or execute remote code.

Brandfolder Affected
Brandfolder
Through 3.0
View vendor advisory (opens in new tab)
Published
15 Jun 2026
Attempts Observed Since
21 Jun 2026
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
None

Tags

wordpress php

CVE References

Exploitation evidence

Evidence of exploitation attempts

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploitation Attempts Observed in the Wild

Previdian sensor

Recorded 22 Sep 2026

Previdian sensors observed exploitation attempts targeting this vulnerability before a third-party report.

Exploitation Attempts Observed

Previdian sensor

First observed 21 Jun 2026

Previdian sensors observed exploitation attempts targeting this vulnerability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
The Shadowserver First 2026-09-22 00:00 UTC
Previdian Sensors 2026-09-23 11:15 UTC

Operational indicators for this CVE are listed under Detection.

Sensor telemetry

Previdian Sensor Observations

Previdian sensor observations are exploitation attempts targeting this vulnerability. They do not show that the target was vulnerable or that the attempt succeeded. The cards and chart show volume, unique attackers, and daily activity.

18

Attempts observed

9

Unique attacker IPs

6

Attacker countries

DE · ER · JP · LT · US · YE

6

Sensors observed

CVE-2016-20080 exploitation attempts over the last 51 days

Daily events observed by Previdian sensors

Updated 08 Nov 2026

0
4
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
11
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
19 Sep 30 Sep 11 Oct 22 Oct 8 Nov

First observed 21 Jun 2026 · Last observed 28 Oct 2026

Pro adds sensor region and window summaries. Enterprise adds raw IPs, paths, User-Agents, and payloads.

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Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
2
4
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Attacker IP Indicators

Attacker IP indicators observed · available in Pro and Enterprise.

Sensor-derived attacker IP indicators are available to Pro and Enterprise accounts under Detection and through the Pro API.

Learn about Pro API access

Risk and context

Severity, weaknesses, and research context

CVSS v4.0

6.9 Medium

Potential damage if exploited. Separate from whether attackers are using it.

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

EPSS

0.4%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') CWE-98

All CVSS Scores

CVSS v4.0 6.9 Medium

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

CVSS v3.1 6.2 Medium

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Timeline

From disclosure to observed exploitation attempts

  1. 00:00 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party report of exploitation attempts

  2. 14:44 UTC

    Indicators of compromise added (13)

    Indicators of compromise recorded

  3. 14:44 UTC

    Observed by Previdian sensors

    Previdian sensors observed exploitation attempts targeting this vulnerability.

  4. 12:00 UTC

    CVE published

    Vulnerability disclosed publicly

  5. 11:47 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2016-20080

Sample API response 
{
  "cve_id": "CVE-2016-20080",
  "confidence": "Confirmed",
  "cvss_score": 6.9,
  "cvss_estimated": false,
  "epss_score": 0.0039,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 18, "sensors": 6 }
}