CVE-2023-1242Public exploitNetwork attack vector

Browser-context script execution via unsanitized tag excerpts

Published Mar 7, 2023 · Updated Mar 5, 2025

Stored XSS in Apache Answer before 1.0.6 allows remote authenticated users to run script in another user's browser through a crafted tag excerpt. The GetTagResp.GetExcerpt method derived tag excerpts from unsanitized OriginalText rather than the sanitized ParsedText representation. Exploitation requires an account able to edit tag content and another user to view the stored excerpt; browser-context script can read or alter data available to that viewer.

CVSS severity5.4
Medium
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Apache Answer before 1.0.6 allows remote authenticated users to run script in another user's browser through a crafted tag excerpt. The GetTagResp.GetExcerpt method derived tag excerpts from unsanitized OriginalText rather than the sanitized ParsedText representation. Exploitation requires an account able to edit tag content and another user to view the stored excerpt; browser-context script can read or alter data available to that viewer.

The record

CVE
CVE-2023-1242
Published
Mar 7, 2023
Updated
Mar 5, 2025
Vendor
The Apache Software Foundation
Product
Apache Answer
Classifications
CWE-79, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 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 <1.0.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Answerversion=unspecified <1.0.6

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
8.0huntr.devCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

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
Privilegesauthenticated
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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