CVE-2020-7908Network attack vector

Phishing via reverse tabnabbing

Published Jan 30, 2020 · Updated Aug 4, 2024

Reverse tabnabbing in JetBrains TeamCity before 2019.1.5 allows remote attackers to replace an opener tab after a user follows a link. JetBrains identifies several affected pages but does not publish the endpoints or the link handling that leaves the opener tab controllable. Exploitation requires a user to follow an attacker-controlled link, enabling deceptive content replacement and phishing in the original tab.

CVSS severity4.3
Medium
EPSS probability0.84%
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 JetBrains TeamCity before 2019.1.5 allows remote attackers to replace an opener tab after a user follows a link. JetBrains identifies several affected pages but does not publish the endpoints or the link handling that leaves the opener tab controllable. Exploitation requires a user to follow an attacker-controlled link, enabling deceptive content replacement and phishing in the original tab.

The record

CVE
CVE-2020-7908
Published
Jan 30, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-269, T1566.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 30, 2020CVE 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:P/I:N/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/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-269Improper Privilege Management
T1566.002Spearphishing 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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