CVE-2023-50265: Bazarr manages and downloads subtitles

Q: How do I fix CVE-2023-50265?

bazarr: upgrade to 1.3.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-50265 being exploited?

CVE-2023-50265 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-50265 affect?

CVE-2023-50265 affects bazarr. Severity is high (CVSS 7.5). Bazarr manages and downloads subtitles. Prior to 1.3.1, the /api/swaggerui/static endpoint in bazarr/app/ui.py does not validate the user-controlled filename variable and uses it in the send_file function, which leads to an arbitrary file r

Q: How urgent is CVE-2023-50265?

Priority 51/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2023-50265 is a high-severity flaw (CVSS 7.5) affecting bazarr. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Bazarr manages and downloads subtitles. Prior to 1.3.1, the /api/swaggerui/static endpoint in bazarr/app/ui.py does not validate the user-controlled filename variable and uses it in the send_file function, which leads to an arbitrary file read on the system. This issue is fixed in version 1.3.1.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 40%)
CISA exploited list	No
Weakness	CWE-22
Published	2023-12-15
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: bazarr

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-12-15 21:15 UTCPublished CVE record published
2026-06-17 06:39 UTCUpdated Record last modified

bazarr bazarr UPGRADE

Affected: < 1.3.1

Fixed in: 1.3.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy bazarr || rpm -q bazarr || bazarr --version

2. UPGRADE to 1.3.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade bazarr

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade bazarr

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-50265?

bazarr: upgrade to 1.3.1. Exact commands for each OS are on this page.

Is CVE-2023-50265 being exploited?

CVE-2023-50265 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-50265 affect?

CVE-2023-50265 affects bazarr. Severity is high (CVSS 7.5). Bazarr manages and downloads subtitles. Prior to 1.3.1, the /api/swaggerui/static endpoint in bazarr/app/ui.py does not validate the user-controlled filename variable and uses it in the send_file function, which leads to an arbitrary file r

How urgent is CVE-2023-50265?

Priority 51/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2024-40348 HIGH 8.2 UPGRADE An issue in the component /api/swaggerui/static of Bazaar v1.4.3 allows unauthenticated attackers to execute a
CVE-2023-50266 MEDIUM 5.3 DOWNGRADE Bazarr manages and downloads subtitles
CVE-2023-50264 HIGH 7.5 UPGRADE Bazarr manages and downloads subtitles

References

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