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CVE-2021-43353

Crisp Live Chat <= 0.31 Cross-Site Request Forgery to Stored Cross-Site Scripting

HIGH

8.8

CVSS Score

Published: January 18, 2022 at 04:52 PM UTC

Updated: June 17, 2026 at 04:10 AM UTC

2 products affected across 2 vendorsCrispCrisp

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Severity

HIGH8.8

Exploit prediction

EPSS 0.6%

SSVC

No known exploit

Description

The Crisp Live Chat WordPress plugin is vulnerable to Cross-Site Request Forgery due to missing nonce validation via the crisp_plugin_settings_page function found in the ~/crisp.php file, which made it possible for attackers to inject arbitrary web scripts in versions up to, and including 0.31.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Crisp · Crispwordpress-plugin

95%

v < 0.32

Affected range stops below 0.32, so it looks safe — our inference, not a vendor statement

Crisp · Crisp Live Chatwordpress-plugin

60%

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2643954%40crisp&new=2643954%40crisp&sfp_email=&sfph_mail=

References (2)

x_refsource_MISCIssue TrackingPatchThird Party Advisory

Source: [email protected]

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2643954%40crisp&new=2643954%40crisp&sfp_email=&sfph_mail=

x_refsource_MISCThird Party Advisory

Source: [email protected]

https://www.wordfence.com/vulnerability-advisories/#CVE-2021-43353

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHWordfence

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-352

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