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Vulnerability record · CVE-2024-21501 · published 24 February 2024

CVE-2024-21501: Apostrophecms sanitize-html information exposure vulnerability

Apostrophecms · Sanitize Html

Versions of the package sanitize-html before 2.12.1 are vulnerable to Information Exposure when used on the backend and with the style attribute allowed, allowing enumeration of files in the system (including project dependencies). An attacker could exploit this vulnerability to gather details about the file system structure and dependencies of the targeted server.

5.3 CVSS 3.1 Medium EPSS 1.0% · top 37.8% CWE-200 · Information exposureCWE-538 · CWE-538
5.3CVSS 3.1 base score
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
16References, 6 tagged exploit
17 Jun 2026Last modified by NVD

Description

Versions of the package sanitize-html before 2.12.1 are vulnerable to Information Exposure when used on the backend and with the style attribute allowed, allowing enumeration of files in the system (including project dependencies). An attacker could exploit this vulnerability to gather details about the file system structure and dependencies of the targeted server.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gist.github.com/Slonser/8b4d061abe6ee1b2e10c7242987674cf ExploitThird Party Advisory
https://github.com/apostrophecms/apostrophe/discussions/4436 Issue Tracking
https://github.com/apostrophecms/sanitize-html/commit/c5dbdf77fe8b836d3bf4554ea39edb45281ec0b4 Patch
https://github.com/apostrophecms/sanitize-html/pull/650 Patch
https://lists.fedoraproject.org/archives/list/[email protected]/message/4EB5JPYRCTS64EA5AMV3INHDP Mailing List
https://lists.fedoraproject.org/archives/list/[email protected]/message/P4I5X6V3LYUNBMZ5YOW4BV427 Mailing List
https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-6276557 ExploitThird Party Advisory
https://security.snyk.io/vuln/SNYK-JS-SANITIZEHTML-6256334 ExploitThird Party Advisory
https://gist.github.com/Slonser/8b4d061abe6ee1b2e10c7242987674cf ExploitThird Party Advisory
https://github.com/apostrophecms/apostrophe/discussions/4436 Issue Tracking
https://github.com/apostrophecms/sanitize-html/commit/c5dbdf77fe8b836d3bf4554ea39edb45281ec0b4 Patch
https://github.com/apostrophecms/sanitize-html/pull/650 Patch
https://lists.fedoraproject.org/archives/list/[email protected]/message/4EB5JPYRCTS64EA5AMV3INHDP Mailing List
https://lists.fedoraproject.org/archives/list/[email protected]/message/P4I5X6V3LYUNBMZ5YOW4BV427 Mailing List
https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-6276557 ExploitThird Party Advisory
https://security.snyk.io/vuln/SNYK-JS-SANITIZEHTML-6256334 ExploitThird Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2024-21501), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.