CVE-2026-21854: The Tarkov Data Manager is a tool to manage the Tarkov item data

Q: How do I fix CVE-2026-21854?

tarkov data manager: upgrade to 2025-01-02. Exact commands for each OS are on this page.

Q: Is CVE-2026-21854 being exploited?

CVE-2026-21854 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-2026-21854 affect?

CVE-2026-21854 affects tarkov data manager. Severity is critical (CVSS 9.8). The Tarkov Data Manager is a tool to manage the Tarkov item data. Prior to 02 January 2025, an authentication bypass vulnerability in the login endpoint allows any unauthenticated user to gain full admin access to the Tarkov Data Manager ad

Q: How urgent is CVE-2026-21854?

Priority 49/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-21854 is a critical-severity flaw (CVSS 9.8) affecting tarkov data manager. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Tarkov Data Manager is a tool to manage the Tarkov item data. Prior to 02 January 2025, an authentication bypass vulnerability in the login endpoint allows any unauthenticated user to gain full admin access to the Tarkov Data Manager admin panel by exploiting a JavaScript prototype property access vulnerability, combined with loose equality type coercion. A series of fix commits on 02 January 2025 fixed this and other vulnerabilities.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 60%)
CISA exploited list	No
Weakness	CWE-287, CWE-843, CWE-1321
Published	2026-01-07
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2026-01-07 19:15 UTCPublished CVE record published
2026-06-17 10:19 UTCUpdated Record last modified

tarkov tarkov data manager UPGRADE

Affected: < 2025-01-02

Fixed in: 2025-01-02

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy tarkov-data-manager || rpm -q tarkov-data-manager || tarkov-data-manager --version

2. UPGRADE to 2025-01-02 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade tarkov-data-manager

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade tarkov-data-manager

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-2026-21854?

tarkov data manager: upgrade to 2025-01-02. Exact commands for each OS are on this page.

Is CVE-2026-21854 being exploited?

CVE-2026-21854 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-2026-21854 affect?

CVE-2026-21854 affects tarkov data manager. Severity is critical (CVSS 9.8). The Tarkov Data Manager is a tool to manage the Tarkov item data. Prior to 02 January 2025, an authentication bypass vulnerability in the login endpoint allows any unauthenticated user to gain full admin access to the Tarkov Data Manager ad

How urgent is CVE-2026-21854?

Priority 49/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-21856 HIGH 7.2 UPGRADE The Tarkov Data Manager is a tool to manage the Tarkov item data
CVE-2026-21855 CRITICAL 9.3 UPGRADE The Tarkov Data Manager is a tool to manage the Tarkov item data

References

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