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CVE-2020-5295

CWE-98Published: June 3, 2020· Updated: Jun 17, 2026

4.9

CVSS v3.1

Official Description

In OctoberCMS (october/october composer package) versions from 1.0.319 and before 1.0.466, an attacker can exploit this vulnerability to read local files of an October CMS server. The vulnerability is only exploitable by an authenticated backend user with the `cms.manage_assets` permission. Issue has been patched in Build 466 (v1.0.466).

Technical Analysis

CVE-2020-5295 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 4.9.

A proof-of-concept (PoC) exploit exists for CVE-2020-5295. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.High

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Affected Vendors & Products

octobercms1 product(s)

october

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

POC AVAILABLEProof-of-concept code exists

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/octobercms/october/commit/2b8939cc8b5b6fe81e093fe2c9f883ada4e3c8cc

PATCHhttps://github.com/octobercms/october/security/advisories/GHSA-r23f-c2j5-rx2f

PATCHhttps://github.com/octobercms/october/commit/2b8939cc8b5b6fe81e093fe2c9f883ada4e3c8cc

PATCHhttps://github.com/octobercms/october/security/advisories/GHSA-r23f-c2j5-rx2f

ADVISORYhttp://packetstormsecurity.com/files/158730/October-CMS-Build-465-XSS-File-Read-File-Deletion-CSV-Injection.html

ADVISORYhttp://seclists.org/fulldisclosure/2020/Aug/2

ADVISORYhttp://packetstormsecurity.com/files/158730/October-CMS-Build-465-XSS-File-Read-File-Deletion-CSV-Injection.html

ADVISORYhttp://seclists.org/fulldisclosure/2020/Aug/2

All References (8)

→

http://packetstormsecurity.com/files/158730/October-CMS-Build-465-XSS-File-Read-File-Deletion-CSV-Injection.htmlExploit · Third Party Advisory · VDB Entry

→

http://seclists.org/fulldisclosure/2020/Aug/2Exploit · Mailing List · Third Party Advisory

→

https://github.com/octobercms/october/commit/2b8939cc8b5b6fe81e093fe2c9f883ada4e3c8ccPatch · Third Party Advisory

→

https://github.com/octobercms/october/security/advisories/GHSA-r23f-c2j5-rx2fPatch · Third Party Advisory

→

http://packetstormsecurity.com/files/158730/October-CMS-Build-465-XSS-File-Read-File-Deletion-CSV-Injection.htmlExploit · Third Party Advisory · VDB Entry

→

http://seclists.org/fulldisclosure/2020/Aug/2Exploit · Mailing List · Third Party Advisory

→

https://github.com/octobercms/october/commit/2b8939cc8b5b6fe81e093fe2c9f883ada4e3c8ccPatch · Third Party Advisory

→

https://github.com/octobercms/october/security/advisories/GHSA-r23f-c2j5-rx2fPatch · Third Party Advisory

Quick Facts

CVE IDCVE-2020-5295

CVSS Score4.9 / 10

SeverityMEDIUM

WeaknessCWE-98

CISA KEVNo

ExploitPOC

Affected1 vendor(s)

PublishedJun 3, 2020

Related CVEs (CWE-98)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2020-5295 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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