CVE-2021-43264Public exploit

HTML file disclosure via help-path rewriting

Published Nov 2, 2021 · Updated Aug 4, 2024

Path traversal in Mahara before 20.04.5, 20.10.3, 21.04.2, and 21.10.0 allows local users to read restricted HTML help files. The page-help path handler replaces hyphens with slashes in attacker-controlled path components, allowing directory traversal around the intended file access check. Low-privileged local access is required, and the demonstrated consequence is limited to disclosure of HTML files reachable through the help-file lookup.

CVSS severity3.3
Low
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

Path traversal in Mahara before 20.04.5, 20.10.3, 21.04.2, and 21.10.0 allows local users to read restricted HTML help files. The page-help path handler replaces hyphens with slashes in attacker-controlled path components, allowing directory traversal around the intended file access check. Low-privileged local access is required, and the demonstrated consequence is limited to disclosure of HTML files reachable through the help-file lookup.

The record

CVE
CVE-2021-43264
Published
Nov 2, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 2, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

2.1NIST NVDAV:L/AC:L/Au:N/C:P/I:N/A:N
3.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

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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