HOMEVULNERABILITIESCVE-2026-3071
HIGH

CVE-2026-3071

CWE-502Published: February 26, 2026· Updated: Feb 27, 2026

8.4
CVSS v3.1
EPSS:0.06%probability of exploitation in 30 daysPercentile:17.4th

Official Description

Deserialization of untrusted data in the LanguageModel class of Flair from versions 0.4.1 to latest are vulnerable to arbitrary code execution when loading a malicious model.

NVD Source

Technical Analysis

CVE-2026-3071 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.4.

From a weakness classification perspective (CWE-502): Insecure deserialization vulnerabilities allow attackers to inject malicious objects during deserialization, potentially enabling remote code execution.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

All References (2)

→
https://www.hiddenlayer.com/sai-security-advisory/2026-02-flair
→
https://www.hiddenlayer.com/sai-security-advisory/2026-02-flair

Quick Facts

CVE IDCVE-2026-3071
CVSS Score8.4 / 10
SeverityHIGH
WeaknessCWE-502
CISA KEVNo
EPSS (30d)0.06%
PublishedFeb 26, 2026

Related CVEs (CWE-502)

CVE-2026-20131
KEV10.0
CVE-2026-43633
10.0
CVE-2026-26221
10.0
CVE-2026-33819
10.0
CVE-2026-34838
9.9
CVE-2026-46386
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-3071 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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