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CVE Record

CVE-2020-13641: An issue was discovered in the Real-Time Find and Replace plugin before 4.0.2 for WordPress.

An issue was discovered in the Real-Time Find and Replace plugin before 4.0.2 for WordPress. The far_options_page function did not do any nonce verification, allowing for requests to be forged on behalf of an administrator. The find and replace rules could be updated with malicious JavaScript, allowing for that be executed later in the victims browser.

HighCVSS 8.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This WordPress plugin flaw let an attacker trick an administrator’s browser into changing find-and-replace rules. Those rules could store malicious JavaScript, later running in visitors’ or administrators’ browsers. Sites using Real-Time Find and Replace before 4.0.2 should treat this as high priority.

Executive priority

Prioritize remediation on public WordPress sites and any site with many administrators. The fix appears straightforward, but compromise could affect user trust, admin sessions, and site integrity through stored browser-side script execution.

Technical view

CVE-2020-13641 is a CSRF issue in far_options_page in Real-Time Find and Replace before 4.0.2. Missing nonce verification allowed forged administrator requests to update replacement rules with JavaScript, creating stored browser-side execution. CVSS is 8.8 high.

Likely exposure

Exposure is limited to WordPress sites with the Real-Time Find and Replace plugin installed below version 4.0.2. The CVE source bundle does not provide CPEs or a full affected-version matrix beyond “before 4.0.2.”

Exploitation context

The issue requires an administrator to interact with attacker-controlled content or a forged request path. The source bundle does not show CISA KEV listing or confirmed active exploitation. Impact can include stored script execution through plugin rule changes.

Researcher notes

The key control failure is missing nonce verification on an administrative options function. The source data supports CSRF leading to stored XSS through modified rules. No exploit code, KEV status, or broader affected product data is provided in the bundle.

Mitigation direction

  • Update Real-Time Find and Replace to version 4.0.2 or later.
  • Disable and remove the plugin if an immediate update is not possible.
  • Review vendor and WordPress plugin guidance for newer security instructions.
  • Inspect existing find-and-replace rules for unexpected JavaScript or unauthorized changes.

Validation and detection

  • Inventory WordPress sites for the Real-Time Find and Replace plugin.
  • Confirm installed versions are 4.0.2 or later.
  • Review plugin settings for unauthorized find-and-replace rule changes.
  • Check available admin or security logs for suspicious settings updates.
Prepared
Confidence
high
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

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CVE-2020-13641 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
8.8 (3.0)
Known Exploited
No
Published

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

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.8CVSS 3.0HighCVSS:3.0/AC:L/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:R2.85.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

8.8High
CVSS 3.0 vector shape for CVE-2020-13641Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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