CVE-2020-36624Network attack vector

Page redirection via unprotected external links

Published Dec 22, 2022 · Updated Aug 4, 2024

Reverse tabnabbing in Ahorner TextHelpers 1.0 allows remote attackers to redirect an application's page through an external link. The link helper emits target="_blank" for external URLs but omits rel="noopener", leaving the originating window accessible through window.opener. Exploitation requires a user to follow a link to an attacker-controlled page, which can replace the originating page and enable phishing.

CVSS severity6.1
Medium
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reverse tabnabbing in Ahorner TextHelpers 1.0 allows remote attackers to redirect an application's page through an external link. The link helper emits target="_blank" for external URLs but omits rel="noopener", leaving the originating window accessible through window.opener. Exploitation requires a user to follow a link to an attacker-controlled page, which can replace the originating page and enable phishing.

The record

CVE
CVE-2020-36624
Published
Dec 22, 2022
Updated
Aug 4, 2024
Vendor
Ahorner
Product
TextHelpers
Classifications
CWE-266, CWE-1022, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Ahorner · TextHelpersversion=1.0

Published CVSS scores

6.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
CWE-1022Use of Web Link to Untrusted Target with window.opener Access
T1204.001Malicious Link

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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