CVE-2013-10021Network attack vector

Reflected XSS via unescaped current-request URL

Published Mar 11, 2023 · Updated Aug 6, 2024

Cross-site scripting in Debug Bar 0.8 and earlier allows remote attackers to execute script in an authenticated user's browser via a crafted URL. The query panel's render method calls add_query_arg without an explicit URL, then inserts the current request URL into the “Show them anyway” link without esc_url encoding when more than 500 queries are logged. Exploitation requires an authenticated user with Debug Bar visible to follow the crafted URL in an older browser; injected script then runs in that user's WordPress session.

CVSS severity6.1
Medium
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Debug Bar 0.8 and earlier allows remote attackers to execute script in an authenticated user's browser via a crafted URL. The query panel's render method calls add_query_arg without an explicit URL, then inserts the current request URL into the “Show them anyway” link without esc_url encoding when more than 500 queries are logged. Exploitation requires an authenticated user with Debug Bar visible to follow the crafted URL in an older browser; injected script then runs in that user's WordPress session.

The record

CVE
CVE-2013-10021
Published
Mar 11, 2023
Updated
Aug 6, 2024
Vendor
Dion Hulse
Product
Debug Bar
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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
  2. Affected versionversion=0.2
  3. Affected versionversion=0.3
  4. Affected versionversion=0.4
  5. Affected versionversion=0.5
  6. Affected versionversion=0.6
  7. Affected versionversion=0.7
  8. Affected versionversion=0.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Dion Hulse · Debug Barversion=0.1; version=0.2; version=0.3; version=0.4; version=0.5; version=0.6; version=0.7; version=0.8

Published CVSS scores

4.0VulDBAV:N/AC:L/Au:S/C:N/I:P/A:N
3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
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.

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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

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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