CVE-2023-5559Known exploitationPublic exploitNetwork attack vector

Site denial of service via arbitrary option deletion

Published Nov 27, 2023 · Updated Aug 2, 2024

Missing authorization in 10Web Booster before 2.24.18 allows remote attackers to delete arbitrary WordPress options through AJAX requests. The publicly reachable two_activate_score_check AJAX action uses the nonce parameter as an option key and deletes the named database entry without an authorization or allowlist check. No account or user interaction is required; deleting a critical option such as siteurl can render the WordPress site inoperable.

CVSS severity9.1
Critical
EPSS probability2.79%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in 10Web Booster before 2.24.18 allows remote attackers to delete arbitrary WordPress options through AJAX requests. The publicly reachable two_activate_score_check AJAX action uses the nonce parameter as an option key and deletes the named database entry without an authorization or allowlist check. No account or user interaction is required; deleting a critical option such as siteurl can render the WordPress site inoperable.

The record

CVE
CVE-2023-5559
Published
Nov 27, 2023
Updated
Aug 2, 2024
Vendor
10Web
Product
10Web Booster
Classifications
CWE-862, T1485
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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 <2.24.18

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

10Web · 10Web Boosterversion=0 <2.24.18

Published CVSS scores

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
6.5WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1485Data Destruction

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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