CVE-2022-2860Network attack vector

Cookie prefix restriction bypass via empty names

Published Sep 26, 2022 · Updated May 21, 2025

Cookie policy bypass in Google Chrome before 104.0.5112.101 allows remote attackers to evade cookie prefix restrictions via crafted HTML. CanonicalCookie accepted cookies with an empty name whose value impersonated a reserved cookie-name prefix instead of rejecting them as noncanonical. Successful exploitation requires a user to load attacker-controlled HTML and permits creation of cookies that evade the __Secure- or __Host- prefix safeguards.

CVSS severity6.5
Medium
EPSS probability0.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cookie policy bypass in Google Chrome before 104.0.5112.101 allows remote attackers to evade cookie prefix restrictions via crafted HTML. CanonicalCookie accepted cookies with an empty name whose value impersonated a reserved cookie-name prefix instead of rejecting them as noncanonical. Successful exploitation requires a user to load attacker-controlled HTML and permits creation of cookies that evade the __Secure- or __Host- prefix safeguards.

The record

CVE
CVE-2022-2860
Published
Sep 26, 2022
Updated
May 21, 2025
Vendor
Google Cloud
Product
Google Chrome
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 26, 2022CVE publishedPublication date reported by the CVE source.
  2. May 21, 2025Record 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=unspecified <104.0.5112.101

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Google Cloud · Google Chromeversion=unspecified <104.0.5112.101

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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