CVE-2023-53155Public exploitNetwork attack vector

Unauthenticated HTML injection via reflected name parameter

Published Jul 25, 2025 · Updated Jul 29, 2025

HTML injection in EmbedThis GoAhead 2.5 allows remote attackers to inject markup via the name parameter of goform/formTest. The handler reflects the untrusted name value into its HTML response without validation or output encoding. A reachable formTest handler is sufficient; injected markup can alter returned page content and execute browser-side content in the site origin.

CVSS severity7.2
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

HTML injection in EmbedThis GoAhead 2.5 allows remote attackers to inject markup via the name parameter of goform/formTest. The handler reflects the untrusted name value into its HTML response without validation or output encoding. A reachable formTest handler is sufficient; injected markup can alter returned page content and execute browser-side content in the site origin.

The record

CVE
CVE-2023-53155
Published
Jul 25, 2025
Updated
Jul 29, 2025
Vendor
EmbedThis
Product
GoAhead
Classifications
CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 29, 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=2.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

EmbedThis · GoAheadversion=2.5

Published CVSS scores

7.2MITRECVSS:3.1/AV:N/AC:L/PR:N/UI:N/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

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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