CVE-2023-4847Public exploitNetwork attack vector

Stored script execution via unsanitized book fields

Published Sep 9, 2023 · Updated Aug 2, 2024

Stored XSS in SourceCodester Simple Book Catalog App 1.0 allows remote authenticated users to execute script via crafted book metadata. The add_book.php and update_book.php handlers persist book_title and book_author POST values without validation or cleaning, and the home page renders the stored payload. Low-privileged application access is required to store the payload, and execution begins when another user views or refreshes the home page.

CVSS severity3.5
Low
EPSS probability0.60%
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 SourceCodester Simple Book Catalog App 1.0 allows remote authenticated users to execute script via crafted book metadata. The add_book.php and update_book.php handlers persist book_title and book_author POST values without validation or cleaning, and the home page renders the stored payload. Low-privileged application access is required to store the payload, and execution begins when another user views or refreshes the home page.

The record

CVE
CVE-2023-4847
Published
Sep 9, 2023
Updated
Aug 2, 2024
Vendor
SourceCodester
Product
Simple Book Catalog App
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 9, 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=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SourceCodester · Simple Book Catalog Appversion=1.0

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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

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
Privilegesauthenticated
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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