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NVD / CVE Program· CNA Wordfence

CVE-2020-36836: WP Fastest Cache <= 0.9.0.2 - Authenticated (Subscriber+) Arbitrary File Deletion

Noroxi assessment

Priority: Monitor (action score 32/100)

  • A ready-made attack module is public (Nuclei); exploiting it takes no special expertise.
  • Public proof-of-concept code exists (Exploit-DB / GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.4% (FIRST EPSS); higher than 74.2% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: emrevona WP Fastest Cache – WordPress Cache Plugin 0.9.0.3.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to emrevona WP Fastest Cache – WordPress Cache Plugin 0.9.0.3 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

The WP Fastest Cache plugin for WordPress is vulnerable to unauthorized arbitrary file deletion in versions up to, and including, 0.9.0.2 due to a lack of capability checking and insufficient path validation. This makes it possible for authenticated users with minimal permissions to delete arbitrary files from the server.

HighCVSS 8.0 · v3.1—Proof of concept Fix available
Published
Oct 16, 2024
Updated
Jun 16, 2026
EPSS
1.4% · 74th percentile

Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
32 / 40 · 8.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.4%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · Wordfence
8.0
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
wpfastestcachewp fastest cache

Affected versions

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

  • wpfastestcache wp fastest cachebefore 0.9.0.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Wordfence). Independent of NVD's CPE analysis and usually ahead of it.

  • emrevona WP Fastest Cache – WordPress Cache Plugin

    • before 0.9.0.3affected · semver

Same product

wpfastestcache: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-6063WP Fastest Cache < 1.2.2 - Unauthenticated SQL Injection
    60This week
  • CVE-2019-13635The WP Fastest Cache plugin through 0.8.9.5 for WordPress allows wpFastestCache.php and inc/cache.php Directory Traversal.
    49Plan
  • CVE-2015-9316The wp-fastest-cache plugin before 0.8.4.9 for WordPress has SQL injection in wp-admin/admin-ajax.php?action=wpfc_wppolls_ajax_request via t
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2023-1375Jun 9, 2023 · WP Fastest Cache <= 1.1.2 - Missing Authorization to Cache Deletion
    17Monitor
  • ← EarlierCVE-2021-24869Jan 16, 2024 · WP Fastest Cache < 0.9.5 - Subscriber+ SQL Injection
    35Monitor
  • ← EarlierCVE-2021-24870Jan 16, 2024 · WP Fastest Cache < 0.9.5 - CSRF to Stored Cross-Site Scripting
    24Monitor

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
emrevona WP Fastest Cache – WordPress Cache Plugin0.9.0.3Vendor (CNA)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Nuclei detection template ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Nuclei detection templateNuclei template CVE-2020-36836 —

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.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

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

Credits

All researchers

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

Variant candidates

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

  • CVE-2021-24870274 days apartWP Fastest Cache < 0.9.5 - CSRF to Stored Cross-Site Scripting
    24Monitor

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

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

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-352 · Cross-Site Request Forgery (CSRF)

CVSS vector

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

nvd-secondary

Root cause

State-changing requests rely on the session cookie the browser sends automatically; nothing verifies that the request came from the user’s own page.

The bug in code

The whole CWE-352 class

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

Vulnerable

ts
app.use(session({ cookie: { httpOnly: true } }));app.post("/account/address", updateAddress);

Fixed

ts
app.use(session({ cookie: { httpOnly: true, sameSite: "lax" } }));app.post("/account/address", csrfProtection, updateAddress);

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

Show all references (1 more)

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

All records