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CVE-2021-29487

octobercms in a CMS platform based on the Laravel PHP Framework. In affected versions of the october/system package an attacker can exploit this vulnerability to bypass authentication and takeover of and user account on an October CMS server. The vulnerability is exploitable by unauthenticated users via a specially crafted request. This only affects frontend users and the attacker must obtain a Laravel secret key for cookie encryption and signing in order to exploit this vulnerability. The issue has been patched in Build 472 and v1.1.5.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.4, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), for affected systems. Impacting 1 product from octobercms organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2021-08-26T19:15:07.160

Last Modified

2024-11-21T06:01:14.430

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.4 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

4.9

Weaknesses

Type: Secondary
CWE-287
Type: Primary
NVD-CWE-Other

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	octobercms	october	< 1.0.472	Yes
Application	octobercms	october	< 1.1.5	Yes

References

https://github.com/octobercms/library/commit/016a297b1bec55d2e53bc889458ed2cb5c3e9374 Patch, Third Party Advisory ([email protected])
https://github.com/octobercms/library/commit/5bd1a28140b825baebe6becd4f7562299d3de3b9 Patch, Third Party Advisory ([email protected])
https://github.com/octobercms/october/security/advisories/GHSA-h76r-vgf3-j6w5 Patch, Third Party Advisory ([email protected])
https://github.com/octobercms/library/commit/016a297b1bec55d2e53bc889458ed2cb5c3e9374 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/octobercms/library/commit/5bd1a28140b825baebe6becd4f7562299d3de3b9 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/octobercms/october/security/advisories/GHSA-h76r-vgf3-j6w5 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For octobercms's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.