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CVE-2021-39144

Code Injection — is CVE-2021-39144real, exploitable, or a false positive? Here's the community ground truth.

High · CVSS 8.5EPSS 98.5%CISA KEVCWE-94 · Code Injection

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

XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.

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Community ground truth

Community verdict

3 verdicts
Not a real issue

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Community real-world severity: High (High 3) — CVSS base score 8.5

In line with its CVSS base score.

Field notes & remediation

Verdicts are the quick signal — notes are the evidence and fixes behind them.

  • 0
    Field note · Marco FerriCurated

    Confirmed exploited in the wild — listed in the CISA KEV catalog (added 2023-03-10). Treat as real and prioritize patching over triage.

Same weaknessCWE-94 · Code Injection.