CVE-2020-15097Network attack vector

Arbitrary file read and write via path traversal

Published Feb 2, 2021 · Updated Aug 4, 2024

Path traversal in FOSSASIA Loklak through commit 5f48476 allows remote attackers to read or write server-accessible files via its APIs. DAO.getAssetFile joined API-supplied screen names, identifiers, and filenames to the assets directory without normalizing the result or enforcing containment. No authentication or user interaction is required, and exposure is limited to files readable or writable by the server process.

CVSS severity9.1
Critical
EPSS probability2.12%
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 FOSSASIA Loklak through commit 5f48476 allows remote attackers to read or write server-accessible files via its APIs. DAO.getAssetFile joined API-supplied screen names, identifiers, and filenames to the assets directory without normalizing the result or enforcing containment. No authentication or user interaction is required, and exposure is limited to files readable or writable by the server process.

The record

CVE
CVE-2020-15097
Published
Feb 2, 2021
Updated
Aug 4, 2024
Vendor
FOSSASIA
Product
Loklak
Classifications
CWE-22, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 5f48476d6f06dc00d87d25def5f789db703dfe3e

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FOSSASIA · Loklakversion=<= 5f48476d6f06dc00d87d25def5f789db703dfe3e

Published CVSS scores

9.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
6.4NVDAV:N/AC:L/Au:N/C:P/I:P/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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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