CVE-2023-50264Public exploitNetwork attack vector

Arbitrary file read via backup filename traversal

Published Dec 15, 2023 · Updated Aug 2, 2024

Path traversal in Bazarr before 1.3.1 allows remote attackers to read arbitrary host files through the backup download endpoint. The backup_download method joins the untrusted filename to the configured backup folder and passes it to send_file without verifying containment. No authentication or user interaction is required, and access is limited to files readable by the Bazarr process.

CVSS severity7.5
High
EPSS probability0.92%
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 Bazarr before 1.3.1 allows remote attackers to read arbitrary host files through the backup download endpoint. The backup_download method joins the untrusted filename to the configured backup folder and passes it to send_file without verifying containment. No authentication or user interaction is required, and access is limited to files readable by the Bazarr process.

The record

CVE
CVE-2023-50264
Published
Dec 15, 2023
Updated
Aug 2, 2024
Vendor
Bazarr
Product
Bazarr
Classifications
CWE-22, T1005, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=< 1.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Bazarr · Bazarrversion=< 1.3.1

Published CVSS scores

7.5GitHub CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System
T1190Exploit Public-Facing Application

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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