CVE-2023-1891Public exploitNetwork attack vector

Administrator-session script execution via unescaped notice URLs

Published Jun 27, 2023 · Updated Nov 27, 2024

Reflected XSS in Helpie FAQ before 1.9.9 allows remote attackers to run script in an administrator's browser through a crafted URL. Generated URLs for some WordPress administrator notices place request-influenced text into HTML attributes without escaping it for the attribute context. Exploitation requires a logged-in administrator to open the crafted URL while the relevant notice remains undismissed, exposing that session's accessible data and actions.

CVSS severity6.1
Medium
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Helpie FAQ before 1.9.9 allows remote attackers to run script in an administrator's browser through a crafted URL. Generated URLs for some WordPress administrator notices place request-influenced text into HTML attributes without escaping it for the attribute context. Exploitation requires a logged-in administrator to open the crafted URL while the relevant notice remains undismissed, exposing that session's accessible data and actions.

The record

CVE
CVE-2023-1891
Published
Jun 27, 2023
Updated
Nov 27, 2024
Vendor
HelpieWP
Product
Helpie FAQ
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 27, 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=0 <1.9.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HelpieWP · Helpie FAQversion=0 <1.9.9

Published CVSS scores

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.

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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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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