CVE-2026-54267Network attack vector

Response-cache poisoning via clobbered state element

Published Jun 22, 2026 · Updated Jun 22, 2026

DOM clobbering in affected Angular releases allows remote attackers to poison client hydration state through a forged element ID. The TransferState restore path trusts document.getElementById(appId + '-state') without confirming that the returned node is a script, then parses its text as JSON. Exploitation requires SSR hydration and attacker-controlled IDs rendered before the genuine state script; forged cache entries replace genuine API responses, while script execution additionally requires unsafe rendering.

CVSS severity8.6
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DOM clobbering in affected Angular releases allows remote attackers to poison client hydration state through a forged element ID. The TransferState restore path trusts document.getElementById(appId + '-state') without confirming that the returned node is a script, then parses its text as JSON. Exploitation requires SSR hydration and attacker-controlled IDs rendered before the genuine state script; forged cache entries replace genuine API responses, while script execution additionally requires unsafe rendering.

The record

CVE
CVE-2026-54267
Published
Jun 22, 2026
Updated
Jun 22, 2026
Vendor
Go standard library
Product
Angular
Classifications
CWE-471, CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=<= 19.2.25
  2. Affected versionversion=>= 20.0.0-next.0 < 20.3.25
  3. Affected versionversion=>= 21.0.0-next.0 < 21.2.17
  4. Affected versionversion=>= 22.0.0-next.0 < 22.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go standard library · Angularversion=<= 19.2.25; version=>= 20.0.0-next.0 < 20.3.25; version=>= 21.0.0-next.0 < 21.2.17; version=>= 22.0.0-next.0 < 22.0.1

Published CVSS scores

8.6GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
6.1NVDCVSS: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-471Modification of Assumed-Immutable Data (MAID)
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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