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NVD / CVE Program· CNA mitre

CVE-2020-13693: An unauthenticated privilege-escalation issue exists in the bbPress plugin before 2.6.5 for WordPress when New User Registration is enabled.

Noroxi assessment

Priority: Plan (action score 52/100)

  • Public proof-of-concept code exists (Exploit-DB); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 43.8% (FIRST EPSS); higher than 98.7% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: bbpress/bbpress (Packagist) 2.6.5.

Add it to your regular patch cycle. Upgrade to bbpress/bbpress (Packagist) 2.6.5 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

CriticalCVSS 9.8 · v3.1—Proof of concept Fix available
Published
May 28, 2020
Updated
Jun 16, 2026
EPSS
43.8% · 98th percentile
CWE
—

Report tools

JSON

Action score

52

Plan

Add it to your regular patch cycle.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
13 / 30 · 43.8%

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  • 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
bbpressbbpress

Affected versions

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

  • bbpress bbpressbefore 2.6.5

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Packagistbbpress/bbpressbefore 2.6.52.6.5

Same product

bbpress: all records

Other highest-scoring records for the same primary product.

  • CVE-2007-3244SQL injection vulnerability in bb-includes/formatting-functions.php in bbPress before 0.8.1 might allow remote attackers to execute arbitrar
    31Monitor
  • CVE-2026-110762bbPress before 2.6.19 Information Disclosure via BuddyPress Activity Stream
    25Monitor
  • CVE-2011-1150bbPress through 1.0.2 has XSS in /bb-login.php url via the re parameter.
    24Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2007-3243Jun 14, 2007 · Cross-site scripting (XSS) vulnerability in bb-login.php in bbPress 0.8.1 allows remote attackers to inject arbitrary web script or HTML via
    18Monitor
  • ← EarlierCVE-2011-3710Sep 23, 2011 · bbPress 1.0.2 allows remote attackers to obtain sensitive information via a direct request to a .php file, which reveals the installation pa
    20Monitor
  • ← EarlierCVE-2020-13487May 26, 2020 · The bbPress plugin through 2.6.4 for WordPress has stored XSS in the Forum creation section, resulting in JavaScript execution at wp-admin/e
    19Monitor

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
Packagist:bbpress/bbpress2.6.5Package registry (OSV)

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

  • Exploit-DB entry ×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
Exploit-DB entrywebapps2020-06-01

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.

  1. Published
  2. First PoC+3 d
  3. TodayOct 27, 2026+2342 d
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.
  • No user action is required.
  • 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
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-primary

Attack context

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

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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

References

Show all references (2 more)

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

All records